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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.util;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.FileNotFoundException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Comparator;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Map;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.TreeMap;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.function.Function;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.regex.Matcher;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.regex.Pattern;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import edu.umd.cs.findbugs.annotations.Nullable;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.commons.lang3.NotImplementedException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.fs.FSDataOutputStream;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.fs.FileStatus;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.fs.FileSystem;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.fs.Path;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.fs.PathFilter;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.CoprocessorDescriptorBuilder;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.HConstants;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.BloomType;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.hbase.thirdparty.com.google.common.primitives.Ints;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.TableDescriptors;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.TableInfoMissingException;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.TableName;<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span>/**<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * Implementation of {@link TableDescriptors} that reads descriptors from the<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * passed filesystem. It expects descriptors to be in a file in the<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * {@link #TABLEINFO_DIR} subdir of the table's directory in FS. Can be read-only<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * -- i.e. does not modify the filesystem or can be read and write.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> *<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * <p>Also has utility for keeping up the table descriptors tableinfo file.<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * The table schema file is kept in the {@link #TABLEINFO_DIR} subdir<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * of the table directory in the filesystem.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * It has a {@link #TABLEINFO_FILE_PREFIX} and then a suffix that is the<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * edit sequenceid: e.g. <code>.tableinfo.0000000003</code>. This sequenceid<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * is always increasing. It starts at zero. The table schema file with the<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * highest sequenceid has the most recent schema edit. Usually there is one file<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * only, the most recent but there may be short periods where there are more<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * than one file. Old files are eventually cleaned. Presumption is that there<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * will not be lots of concurrent clients making table schema edits. If so,<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * the below needs a bit of a reworking and perhaps some supporting api in hdfs.<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> */<a name="line.75"></a> |
| <span class="sourceLineNo">076</span>@InterfaceAudience.Private<a name="line.76"></a> |
| <span class="sourceLineNo">077</span>public class FSTableDescriptors implements TableDescriptors {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private static final Logger LOG = LoggerFactory.getLogger(FSTableDescriptors.class);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private final FileSystem fs;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private final Path rootdir;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final boolean fsreadonly;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private volatile boolean usecache;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private volatile boolean fsvisited;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @VisibleForTesting<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> long cachehits = 0;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> @VisibleForTesting<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> long invocations = 0;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> /**<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * The file name prefix used to store HTD in HDFS<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public static final String TABLEINFO_FILE_PREFIX = ".tableinfo";<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> public static final String TABLEINFO_DIR = ".tabledesc";<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public static final String TMP_DIR = ".tmp";<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // This cache does not age out the old stuff. Thinking is that the amount<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // of data we keep up in here is so small, no need to do occasional purge.<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> // TODO.<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> private final Map<TableName, TableDescriptor> cache = new ConcurrentHashMap<>();<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> /**<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * Table descriptor for <code>hbase:meta</code> catalog table<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> */<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> private final TableDescriptor metaTableDescriptor;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> /**<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * Construct a FSTableDescriptors instance using the hbase root dir of the given<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * conf and the filesystem where that root dir lives.<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * This instance can do write operations (is not read only).<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> */<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> public FSTableDescriptors(final Configuration conf) throws IOException {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> this(conf, FSUtils.getCurrentFileSystem(conf), FSUtils.getRootDir(conf));<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs, final Path rootdir)<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> throws IOException {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> this(conf, fs, rootdir, false, true);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> /**<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * @param fsreadonly True if we are read-only when it comes to filesystem<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * operations; i.e. on remove, we do not do delete in fs.<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs,<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> final Path rootdir, final boolean fsreadonly, final boolean usecache) throws IOException {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> this(conf, fs, rootdir, fsreadonly, usecache, null);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span><a name="line.129"></a> |
| <span class="sourceLineNo">130</span> /**<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * @param fsreadonly True if we are read-only when it comes to filesystem<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * operations; i.e. on remove, we do not do delete in fs.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * @param metaObserver Used by HMaster. It need to modify the META_REPLICAS_NUM for meta table descriptor.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * see HMaster#finishActiveMasterInitialization<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * TODO: This is a workaround. Should remove this ugly code...<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs,<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> final Path rootdir, final boolean fsreadonly, final boolean usecache,<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> Function<TableDescriptorBuilder, TableDescriptorBuilder> metaObserver) throws IOException {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> this.fs = fs;<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> this.rootdir = rootdir;<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> this.fsreadonly = fsreadonly;<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> this.usecache = usecache;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> this.metaTableDescriptor = metaObserver == null ? createMetaTableDescriptor(conf)<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> : metaObserver.apply(createMetaTableDescriptorBuilder(conf)).build();<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> @VisibleForTesting<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public static TableDescriptorBuilder createMetaTableDescriptorBuilder(final Configuration conf) throws IOException {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> // TODO We used to set CacheDataInL1 for META table. When we have BucketCache in file mode, now<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> // the META table data goes to File mode BC only. Test how that affect the system. If too much,<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // we have to rethink about adding back the setCacheDataInL1 for META table CFs.<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> return TableDescriptorBuilder.newBuilder(TableName.META_TABLE_NAME)<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(HConstants.CATALOG_FAMILY)<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> .setInMemory(true)<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> .setBlocksize(conf.getInt(HConstants.HBASE_META_BLOCK_SIZE,<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> HConstants.DEFAULT_HBASE_META_BLOCK_SIZE))<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> .setBloomFilterType(BloomType.NONE)<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> .build())<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(HConstants.TABLE_FAMILY)<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> .setInMemory(true)<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> .setBlocksize(8 * 1024)<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> .setBloomFilterType(BloomType.NONE)<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> .build())<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> .setColumnFamily(ColumnFamilyDescriptorBuilder<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> .newBuilder(HConstants.REPLICATION_BARRIER_FAMILY)<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> .setMaxVersions(HConstants.ALL_VERSIONS)<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> .setInMemory(true)<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> .setBloomFilterType(BloomType.NONE)<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> .build())<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> .setColumnFamily(ColumnFamilyDescriptorBuilder<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> .newBuilder(HConstants.NAMESPACE_FAMILY)<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> .setInMemory(true)<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> .setBlocksize(conf.getInt(HConstants.HBASE_META_BLOCK_SIZE,<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> HConstants.DEFAULT_HBASE_META_BLOCK_SIZE))<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> .setBloomFilterType(BloomType.NONE)<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> .build())<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> .setCoprocessor(CoprocessorDescriptorBuilder.newBuilder(<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> MultiRowMutationEndpoint.class.getName())<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> .setPriority(Coprocessor.PRIORITY_SYSTEM).build());<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> }<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> @VisibleForTesting<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> public static TableDescriptor createMetaTableDescriptor(final Configuration conf)<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> throws IOException {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> return createMetaTableDescriptorBuilder(conf).build();<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> @Override<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public void setCacheOn() throws IOException {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> this.cache.clear();<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> this.usecache = true;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> @Override<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> public void setCacheOff() throws IOException {<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> this.usecache = false;<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> this.cache.clear();<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> }<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> @VisibleForTesting<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public boolean isUsecache() {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> return this.usecache;<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> /**<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * Get the current table descriptor for the given table, or null if none exists.<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> *<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> * Uses a local cache of the descriptor but still checks the filesystem on each call<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> * to see if a newer file has been created since the cached one was read.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> */<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> @Override<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> @Nullable<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> public TableDescriptor get(final TableName tablename)<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> throws IOException {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> invocations++;<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if (TableName.META_TABLE_NAME.equals(tablename)) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> cachehits++;<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return metaTableDescriptor;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> // hbase:meta is already handled. If some one tries to get the descriptor for<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> // .logs, .oldlogs or .corrupt throw an exception.<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (HConstants.HBASE_NON_USER_TABLE_DIRS.contains(tablename.getNameAsString())) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> throw new IOException("No descriptor found for non table = " + tablename);<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span><a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if (usecache) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> // Look in cache of descriptors.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> TableDescriptor cachedtdm = this.cache.get(tablename);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if (cachedtdm != null) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> cachehits++;<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> return cachedtdm;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> TableDescriptor tdmt = null;<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> try {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> tdmt = getTableDescriptorFromFs(fs, rootdir, tablename);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> } catch (NullPointerException e) {<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> LOG.debug("Exception during readTableDecriptor. Current table name = "<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> + tablename, e);<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> } catch (TableInfoMissingException e) {<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> // ignore. This is regular operation<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> } catch (IOException ioe) {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> LOG.debug("Exception during readTableDecriptor. Current table name = "<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> + tablename, ioe);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> }<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> // last HTD written wins<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> if (usecache && tdmt != null) {<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> this.cache.put(tablename, tdmt);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> }<a name="line.264"></a> |
| <span class="sourceLineNo">265</span><a name="line.265"></a> |
| <span class="sourceLineNo">266</span> return tdmt;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span><a name="line.268"></a> |
| <span class="sourceLineNo">269</span> /**<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> * Returns a map from table name to table descriptor for all tables.<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> */<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> @Override<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> public Map<String, TableDescriptor> getAll()<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> throws IOException {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> Map<String, TableDescriptor> tds = new TreeMap<>();<a name="line.275"></a> |
| <span class="sourceLineNo">276</span><a name="line.276"></a> |
| <span class="sourceLineNo">277</span> if (fsvisited && usecache) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> for (Map.Entry<TableName, TableDescriptor> entry: this.cache.entrySet()) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> tds.put(entry.getKey().toString(), entry.getValue());<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> // add hbase:meta to the response<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> tds.put(this.metaTableDescriptor.getTableName().getNameAsString(), metaTableDescriptor);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> } else {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> LOG.trace("Fetching table descriptors from the filesystem.");<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> boolean allvisited = true;<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> for (Path d : FSUtils.getTableDirs(fs, rootdir)) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> TableDescriptor htd = null;<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> try {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> htd = get(FSUtils.getTableName(d));<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> } catch (FileNotFoundException fnfe) {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> // inability of retrieving one HTD shouldn't stop getting the remaining<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> LOG.warn("Trouble retrieving htd", fnfe);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> if (htd == null) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> allvisited = false;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> continue;<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> } else {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> tds.put(htd.getTableName().getNameAsString(), htd);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> fsvisited = allvisited;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> }<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> return tds;<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> /**<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> * Find descriptors by namespace.<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * @see #get(org.apache.hadoop.hbase.TableName)<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> */<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> @Override<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> public Map<String, TableDescriptor> getByNamespace(String name)<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> throws IOException {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> Map<String, TableDescriptor> htds = new TreeMap<>();<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> List<Path> tableDirs =<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> FSUtils.getLocalTableDirs(fs, FSUtils.getNamespaceDir(rootdir, name));<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> for (Path d: tableDirs) {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> TableDescriptor htd = null;<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> try {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> htd = get(FSUtils.getTableName(d));<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> } catch (FileNotFoundException fnfe) {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> // inability of retrieving one HTD shouldn't stop getting the remaining<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> LOG.warn("Trouble retrieving htd", fnfe);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> if (htd == null) continue;<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> htds.put(FSUtils.getTableName(d).getNameAsString(), htd);<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> return htds;<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> }<a name="line.328"></a> |
| <span class="sourceLineNo">329</span><a name="line.329"></a> |
| <span class="sourceLineNo">330</span> /**<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> * Adds (or updates) the table descriptor to the FileSystem<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> * and updates the local cache with it.<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> */<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> @Override<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> public void add(TableDescriptor htd) throws IOException {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> if (fsreadonly) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> throw new NotImplementedException("Cannot add a table descriptor - in read only mode");<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> TableName tableName = htd.getTableName();<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> if (TableName.META_TABLE_NAME.equals(tableName)) {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> throw new NotImplementedException(HConstants.NOT_IMPLEMENTED);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> }<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> if (HConstants.HBASE_NON_USER_TABLE_DIRS.contains(tableName.getNameAsString())) {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> throw new NotImplementedException(<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> "Cannot add a table descriptor for a reserved subdirectory name: "<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> + htd.getTableName().getNameAsString());<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> }<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> updateTableDescriptor(htd);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span><a name="line.350"></a> |
| <span class="sourceLineNo">351</span> /**<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> * Removes the table descriptor from the local cache and returns it.<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> * If not in read only mode, it also deletes the entire table directory(!)<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> * from the FileSystem.<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> */<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> @Override<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> public TableDescriptor remove(final TableName tablename)<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> throws IOException {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> if (fsreadonly) {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> throw new NotImplementedException("Cannot remove a table descriptor - in read only mode");<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> }<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> Path tabledir = getTableDir(tablename);<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> if (this.fs.exists(tabledir)) {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> if (!this.fs.delete(tabledir, true)) {<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> throw new IOException("Failed delete of " + tabledir.toString());<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> }<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> TableDescriptor descriptor = this.cache.remove(tablename);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> return descriptor;<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> /**<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> * Checks if a current table info file exists for the given table<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> *<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> * @param tableName name of table<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> * @return true if exists<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> * @throws IOException<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> */<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> public boolean isTableInfoExists(TableName tableName) throws IOException {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return getTableInfoPath(tableName) != null;<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> }<a name="line.381"></a> |
| <span class="sourceLineNo">382</span><a name="line.382"></a> |
| <span class="sourceLineNo">383</span> /**<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> * Find the most current table info file for the given table in the hbase root directory.<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> * @return The file status of the current table info file or null if it does not exist<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> */<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> private FileStatus getTableInfoPath(final TableName tableName) throws IOException {<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> Path tableDir = getTableDir(tableName);<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> return getTableInfoPath(tableDir);<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> }<a name="line.390"></a> |
| <span class="sourceLineNo">391</span><a name="line.391"></a> |
| <span class="sourceLineNo">392</span> private FileStatus getTableInfoPath(Path tableDir)<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> throws IOException {<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> return getTableInfoPath(fs, tableDir, !fsreadonly);<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span><a name="line.396"></a> |
| <span class="sourceLineNo">397</span> /**<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> * Find the most current table info file for the table located in the given table directory.<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> *<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> * Looks within the {@link #TABLEINFO_DIR} subdirectory of the given directory for any table info<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> * files and takes the 'current' one - meaning the one with the highest sequence number if present<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> * or no sequence number at all if none exist (for backward compatibility from before there<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> * were sequence numbers).<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> *<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> * @return The file status of the current table info file or null if it does not exist<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> * @throws IOException<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> */<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> public static FileStatus getTableInfoPath(FileSystem fs, Path tableDir)<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> throws IOException {<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> return getTableInfoPath(fs, tableDir, false);<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> }<a name="line.411"></a> |
| <span class="sourceLineNo">412</span><a name="line.412"></a> |
| <span class="sourceLineNo">413</span> /**<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> * Find the most current table info file for the table in the given table directory.<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> *<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> * Looks within the {@link #TABLEINFO_DIR} subdirectory of the given directory for any table info<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> * files and takes the 'current' one - meaning the one with the highest sequence number if<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> * present or no sequence number at all if none exist (for backward compatibility from before<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> * there were sequence numbers).<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> * If there are multiple table info files found and removeOldFiles is true it also deletes the<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> * older files.<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> *<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> * @return The file status of the current table info file or null if none exist<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> * @throws IOException<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> */<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> private static FileStatus getTableInfoPath(FileSystem fs, Path tableDir, boolean removeOldFiles)<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> throws IOException {<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> Path tableInfoDir = new Path(tableDir, TABLEINFO_DIR);<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> return getCurrentTableInfoStatus(fs, tableInfoDir, removeOldFiles);<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span><a name="line.431"></a> |
| <span class="sourceLineNo">432</span> /**<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> * Find the most current table info file in the given directory<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> *<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> * Looks within the given directory for any table info files<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> * and takes the 'current' one - meaning the one with the highest sequence number if present<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> * or no sequence number at all if none exist (for backward compatibility from before there<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> * were sequence numbers).<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> * If there are multiple possible files found<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> * and the we're not in read only mode it also deletes the older files.<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> *<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> * @return The file status of the current table info file or null if it does not exist<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> * @throws IOException<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> */<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> // only visible for FSTableDescriptorMigrationToSubdir, can be removed with that<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> static FileStatus getCurrentTableInfoStatus(FileSystem fs, Path dir, boolean removeOldFiles)<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> throws IOException {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> FileStatus [] status = FSUtils.listStatus(fs, dir, TABLEINFO_PATHFILTER);<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> if (status == null || status.length < 1) return null;<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> FileStatus mostCurrent = null;<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> for (FileStatus file : status) {<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> if (mostCurrent == null || TABLEINFO_FILESTATUS_COMPARATOR.compare(file, mostCurrent) < 0) {<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> mostCurrent = file;<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> }<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> }<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> if (removeOldFiles && status.length > 1) {<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> // Clean away old versions<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> for (FileStatus file : status) {<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> Path path = file.getPath();<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> if (!file.equals(mostCurrent)) {<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> if (!fs.delete(file.getPath(), false)) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> LOG.warn("Failed cleanup of " + path);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> } else {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> LOG.debug("Cleaned up old tableinfo file " + path);<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> }<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> }<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> }<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> return mostCurrent;<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> }<a name="line.470"></a> |
| <span class="sourceLineNo">471</span><a name="line.471"></a> |
| <span class="sourceLineNo">472</span> /**<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> * Compare {@link FileStatus} instances by {@link Path#getName()}. Returns in<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> * reverse order.<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> */<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> @VisibleForTesting<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> static final Comparator<FileStatus> TABLEINFO_FILESTATUS_COMPARATOR =<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> new Comparator<FileStatus>() {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> @Override<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> public int compare(FileStatus left, FileStatus right) {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> return right.compareTo(left);<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> }};<a name="line.482"></a> |
| <span class="sourceLineNo">483</span><a name="line.483"></a> |
| <span class="sourceLineNo">484</span> /**<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> * Return the table directory in HDFS<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> */<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> @VisibleForTesting Path getTableDir(final TableName tableName) {<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> return FSUtils.getTableDir(rootdir, tableName);<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> }<a name="line.489"></a> |
| <span class="sourceLineNo">490</span><a name="line.490"></a> |
| <span class="sourceLineNo">491</span> private static final PathFilter TABLEINFO_PATHFILTER = new PathFilter() {<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> @Override<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> public boolean accept(Path p) {<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> // Accept any file that starts with TABLEINFO_NAME<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> return p.getName().startsWith(TABLEINFO_FILE_PREFIX);<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> }};<a name="line.496"></a> |
| <span class="sourceLineNo">497</span><a name="line.497"></a> |
| <span class="sourceLineNo">498</span> /**<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> * Width of the sequenceid that is a suffix on a tableinfo file.<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> */<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> @VisibleForTesting static final int WIDTH_OF_SEQUENCE_ID = 10;<a name="line.501"></a> |
| <span class="sourceLineNo">502</span><a name="line.502"></a> |
| <span class="sourceLineNo">503</span> /*<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> * @param number Number to use as suffix.<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> * @return Returns zero-prefixed decimal version of passed<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> * number (Does absolute in case number is negative).<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> */<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> private static String formatTableInfoSequenceId(final int number) {<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> byte [] b = new byte[WIDTH_OF_SEQUENCE_ID];<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> int d = Math.abs(number);<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> for (int i = b.length - 1; i >= 0; i--) {<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> b[i] = (byte)((d % 10) + '0');<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> d /= 10;<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> }<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> return Bytes.toString(b);<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> }<a name="line.516"></a> |
| <span class="sourceLineNo">517</span><a name="line.517"></a> |
| <span class="sourceLineNo">518</span> /**<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> * Regex to eat up sequenceid suffix on a .tableinfo file.<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> * Use regex because may encounter oldstyle .tableinfos where there is no<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> * sequenceid on the end.<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> */<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> private static final Pattern TABLEINFO_FILE_REGEX =<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> Pattern.compile(TABLEINFO_FILE_PREFIX + "(\\.([0-9]{" + WIDTH_OF_SEQUENCE_ID + "}))?$");<a name="line.524"></a> |
| <span class="sourceLineNo">525</span><a name="line.525"></a> |
| <span class="sourceLineNo">526</span> /**<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> * @param p Path to a <code>.tableinfo</code> file.<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> * @return The current editid or 0 if none found.<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> */<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> @VisibleForTesting static int getTableInfoSequenceId(final Path p) {<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> if (p == null) return 0;<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> Matcher m = TABLEINFO_FILE_REGEX.matcher(p.getName());<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> if (!m.matches()) throw new IllegalArgumentException(p.toString());<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> String suffix = m.group(2);<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> if (suffix == null || suffix.length() <= 0) return 0;<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> return Integer.parseInt(m.group(2));<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> }<a name="line.537"></a> |
| <span class="sourceLineNo">538</span><a name="line.538"></a> |
| <span class="sourceLineNo">539</span> /**<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> * @param sequenceid<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> * @return Name of tableinfo file.<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> */<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> @VisibleForTesting static String getTableInfoFileName(final int sequenceid) {<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> return TABLEINFO_FILE_PREFIX + "." + formatTableInfoSequenceId(sequenceid);<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> }<a name="line.545"></a> |
| <span class="sourceLineNo">546</span><a name="line.546"></a> |
| <span class="sourceLineNo">547</span> /**<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> * Returns the latest table descriptor for the given table directly from the file system<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> * if it exists, bypassing the local cache.<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> * Returns null if it's not found.<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> */<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> public static TableDescriptor getTableDescriptorFromFs(FileSystem fs,<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> Path hbaseRootDir, TableName tableName) throws IOException {<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> Path tableDir = FSUtils.getTableDir(hbaseRootDir, tableName);<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> return getTableDescriptorFromFs(fs, tableDir);<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> }<a name="line.556"></a> |
| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> /**<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> * Returns the latest table descriptor for the table located at the given directory<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> * directly from the file system if it exists.<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> * @throws TableInfoMissingException if there is no descriptor<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> */<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> public static TableDescriptor getTableDescriptorFromFs(FileSystem fs, Path tableDir)<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> throws IOException {<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> FileStatus status = getTableInfoPath(fs, tableDir, false);<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> if (status == null) {<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> throw new TableInfoMissingException("No table descriptor file under " + tableDir);<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> }<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> return readTableDescriptor(fs, status);<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> }<a name="line.570"></a> |
| <span class="sourceLineNo">571</span><a name="line.571"></a> |
| <span class="sourceLineNo">572</span> private static TableDescriptor readTableDescriptor(FileSystem fs, FileStatus status)<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> throws IOException {<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> int len = Ints.checkedCast(status.getLen());<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> byte [] content = new byte[len];<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> FSDataInputStream fsDataInputStream = fs.open(status.getPath());<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> try {<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> fsDataInputStream.readFully(content);<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> } finally {<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> fsDataInputStream.close();<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> }<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> TableDescriptor htd = null;<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> try {<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> htd = TableDescriptorBuilder.parseFrom(content);<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> } catch (DeserializationException e) {<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> throw new IOException("content=" + Bytes.toShort(content), e);<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> }<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> return htd;<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> }<a name="line.589"></a> |
| <span class="sourceLineNo">590</span><a name="line.590"></a> |
| <span class="sourceLineNo">591</span> /**<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> * Update table descriptor on the file system<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> * @throws IOException Thrown if failed update.<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> * @throws NotImplementedException if in read only mode<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> */<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> @VisibleForTesting Path updateTableDescriptor(TableDescriptor td)<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> throws IOException {<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> if (fsreadonly) {<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> throw new NotImplementedException("Cannot update a table descriptor - in read only mode");<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> }<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> TableName tableName = td.getTableName();<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> Path tableDir = getTableDir(tableName);<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> Path p = writeTableDescriptor(fs, td, tableDir, getTableInfoPath(tableDir));<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> if (p == null) throw new IOException("Failed update");<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> LOG.info("Updated tableinfo=" + p);<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> if (usecache) {<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> this.cache.put(td.getTableName(), td);<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> }<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> return p;<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> }<a name="line.610"></a> |
| <span class="sourceLineNo">611</span><a name="line.611"></a> |
| <span class="sourceLineNo">612</span> /**<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> * Deletes all the table descriptor files from the file system.<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> * Used in unit tests only.<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> * @throws NotImplementedException if in read only mode<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> */<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> public void deleteTableDescriptorIfExists(TableName tableName) throws IOException {<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> if (fsreadonly) {<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> throw new NotImplementedException("Cannot delete a table descriptor - in read only mode");<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> }<a name="line.620"></a> |
| <span class="sourceLineNo">621</span><a name="line.621"></a> |
| <span class="sourceLineNo">622</span> Path tableDir = getTableDir(tableName);<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> Path tableInfoDir = new Path(tableDir, TABLEINFO_DIR);<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> deleteTableDescriptorFiles(fs, tableInfoDir, Integer.MAX_VALUE);<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> }<a name="line.625"></a> |
| <span class="sourceLineNo">626</span><a name="line.626"></a> |
| <span class="sourceLineNo">627</span> /**<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> * Deletes files matching the table info file pattern within the given directory<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> * whose sequenceId is at most the given max sequenceId.<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> */<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> private static void deleteTableDescriptorFiles(FileSystem fs, Path dir, int maxSequenceId)<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> throws IOException {<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> FileStatus [] status = FSUtils.listStatus(fs, dir, TABLEINFO_PATHFILTER);<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> for (FileStatus file : status) {<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> Path path = file.getPath();<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> int sequenceId = getTableInfoSequenceId(path);<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> if (sequenceId <= maxSequenceId) {<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> boolean success = FSUtils.delete(fs, path, false);<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> if (success) {<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> LOG.debug("Deleted " + path);<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> } else {<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> LOG.error("Failed to delete table descriptor at " + path);<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> }<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> }<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> }<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> }<a name="line.646"></a> |
| <span class="sourceLineNo">647</span><a name="line.647"></a> |
| <span class="sourceLineNo">648</span> /**<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> * Attempts to write a new table descriptor to the given table's directory.<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> * It first writes it to the .tmp dir then uses an atomic rename to move it into place.<a name="line.650"></a> |
| <span class="sourceLineNo">651</span> * It begins at the currentSequenceId + 1 and tries 10 times to find a new sequence number<a name="line.651"></a> |
| <span class="sourceLineNo">652</span> * not already in use.<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> * Removes the current descriptor file if passed in.<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> *<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> * @return Descriptor file or null if we failed write.<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> */<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> private static Path writeTableDescriptor(final FileSystem fs,<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> final TableDescriptor htd, final Path tableDir,<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> final FileStatus currentDescriptorFile)<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> throws IOException {<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> // Get temporary dir into which we'll first write a file to avoid half-written file phenomenon.<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> // This directory is never removed to avoid removing it out from under a concurrent writer.<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> Path tmpTableDir = new Path(tableDir, TMP_DIR);<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> Path tableInfoDir = new Path(tableDir, TABLEINFO_DIR);<a name="line.664"></a> |
| <span class="sourceLineNo">665</span><a name="line.665"></a> |
| <span class="sourceLineNo">666</span> // What is current sequenceid? We read the current sequenceid from<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> // the current file. After we read it, another thread could come in and<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> // compete with us writing out next version of file. The below retries<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> // should help in this case some but its hard to do guarantees in face of<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> // concurrent schema edits.<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> int currentSequenceId = currentDescriptorFile == null ? 0 :<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> getTableInfoSequenceId(currentDescriptorFile.getPath());<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> int newSequenceId = currentSequenceId;<a name="line.673"></a> |
| <span class="sourceLineNo">674</span><a name="line.674"></a> |
| <span class="sourceLineNo">675</span> // Put arbitrary upperbound on how often we retry<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> int retries = 10;<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> int retrymax = currentSequenceId + retries;<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> Path tableInfoDirPath = null;<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> do {<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> newSequenceId += 1;<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> String filename = getTableInfoFileName(newSequenceId);<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> Path tempPath = new Path(tmpTableDir, filename);<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> if (fs.exists(tempPath)) {<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> LOG.debug(tempPath + " exists; retrying up to " + retries + " times");<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> continue;<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> }<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> tableInfoDirPath = new Path(tableInfoDir, filename);<a name="line.687"></a> |
| <span class="sourceLineNo">688</span> try {<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> writeTD(fs, tempPath, htd);<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> fs.mkdirs(tableInfoDirPath.getParent());<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> if (!fs.rename(tempPath, tableInfoDirPath)) {<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> throw new IOException("Failed rename of " + tempPath + " to " + tableInfoDirPath);<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> }<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> LOG.debug("Wrote into " + tableInfoDirPath);<a name="line.694"></a> |
| <span class="sourceLineNo">695</span> } catch (IOException ioe) {<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> // Presume clash of names or something; go around again.<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> LOG.debug("Failed write and/or rename; retrying", ioe);<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> if (!FSUtils.deleteDirectory(fs, tempPath)) {<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> LOG.warn("Failed cleanup of " + tempPath);<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> }<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> tableInfoDirPath = null;<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> continue;<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> }<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> break;<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> } while (newSequenceId < retrymax);<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> if (tableInfoDirPath != null) {<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> // if we succeeded, remove old table info files.<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> deleteTableDescriptorFiles(fs, tableInfoDir, newSequenceId - 1);<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> }<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> return tableInfoDirPath;<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> }<a name="line.711"></a> |
| <span class="sourceLineNo">712</span><a name="line.712"></a> |
| <span class="sourceLineNo">713</span> private static void writeTD(final FileSystem fs, final Path p, final TableDescriptor htd)<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> throws IOException {<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> FSDataOutputStream out = fs.create(p, false);<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> try {<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> // We used to write this file out as a serialized HTD Writable followed by two '\n's and then<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> // the toString version of HTD. Now we just write out the pb serialization.<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> out.write(TableDescriptorBuilder.toByteArray(htd));<a name="line.719"></a> |
| <span class="sourceLineNo">720</span> } finally {<a name="line.720"></a> |
| <span class="sourceLineNo">721</span> out.close();<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> }<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> }<a name="line.723"></a> |
| <span class="sourceLineNo">724</span><a name="line.724"></a> |
| <span class="sourceLineNo">725</span> /**<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> * Create new TableDescriptor in HDFS. Happens when we are creating table.<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> * Used by tests.<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> * @return True if we successfully created file.<a name="line.728"></a> |
| <span class="sourceLineNo">729</span> */<a name="line.729"></a> |
| <span class="sourceLineNo">730</span> public boolean createTableDescriptor(TableDescriptor htd) throws IOException {<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> return createTableDescriptor(htd, false);<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> }<a name="line.732"></a> |
| <span class="sourceLineNo">733</span><a name="line.733"></a> |
| <span class="sourceLineNo">734</span> /**<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> * Create new TableDescriptor in HDFS. Happens when we are creating table. If<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> * forceCreation is true then even if previous table descriptor is present it<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> * will be overwritten<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> *<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> * @return True if we successfully created file.<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> */<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> public boolean createTableDescriptor(TableDescriptor htd, boolean forceCreation)<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> throws IOException {<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> Path tableDir = getTableDir(htd.getTableName());<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> return createTableDescriptorForTableDirectory(tableDir, htd, forceCreation);<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> }<a name="line.745"></a> |
| <span class="sourceLineNo">746</span><a name="line.746"></a> |
| <span class="sourceLineNo">747</span> /**<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> * Create a new TableDescriptor in HDFS in the specified table directory. Happens when we create<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> * a new table or snapshot a table.<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> * @param tableDir table directory under which we should write the file<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> * @param htd description of the table to write<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> * @param forceCreation if <tt>true</tt>,then even if previous table descriptor is present it will<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> * be overwritten<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> * @return <tt>true</tt> if the we successfully created the file, <tt>false</tt> if the file<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> * already exists and we weren't forcing the descriptor creation.<a name="line.755"></a> |
| <span class="sourceLineNo">756</span> * @throws IOException if a filesystem error occurs<a name="line.756"></a> |
| <span class="sourceLineNo">757</span> */<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> public boolean createTableDescriptorForTableDirectory(Path tableDir,<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> TableDescriptor htd, boolean forceCreation) throws IOException {<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> if (fsreadonly) {<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> throw new NotImplementedException("Cannot create a table descriptor - in read only mode");<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> }<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> FileStatus status = getTableInfoPath(fs, tableDir);<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> if (status != null) {<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> LOG.debug("Current path=" + status.getPath());<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> if (!forceCreation) {<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> if (fs.exists(status.getPath()) && status.getLen() > 0) {<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> if (readTableDescriptor(fs, status).equals(htd)) {<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> LOG.trace("TableInfo already exists.. Skipping creation");<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> return false;<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> }<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> }<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> }<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> }<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> Path p = writeTableDescriptor(fs, htd, tableDir, status);<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> return p != null;<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> }<a name="line.777"></a> |
| <span class="sourceLineNo">778</span><a name="line.778"></a> |
| <span class="sourceLineNo">779</span>}<a name="line.779"></a> |
| <span class="sourceLineNo">780</span><a name="line.780"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
