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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> *<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> *<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.regionserver;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.regionserver.StripeStoreFileManager.OPEN_KEY;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.ArrayList;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.conf.Configuration;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.fs.Path;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.regionserver.compactions.StripeCompactionPolicy;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.slf4j.Logger;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.slf4j.LoggerFactory;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span>/**<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * Stripe implementation of StoreFlusher. Flushes files either into L0 file w/o metadata, or<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * into separate striped files, avoiding L0.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>@InterfaceAudience.Private<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>public class StripeStoreFlusher extends StoreFlusher {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final Logger LOG = LoggerFactory.getLogger(StripeStoreFlusher.class);<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private final Object flushLock = new Object();<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private final StripeCompactionPolicy policy;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private final StripeCompactionPolicy.StripeInformationProvider stripes;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> public StripeStoreFlusher(Configuration conf, HStore store,<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> StripeCompactionPolicy policy, StripeStoreFileManager stripes) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> super(conf, store);<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> this.policy = policy;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> this.stripes = stripes;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> }<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> @Override<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public List<Path> flushSnapshot(MemStoreSnapshot snapshot, long cacheFlushSeqNum,<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> MonitoredTask status, ThroughputController throughputController,<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> FlushLifeCycleTracker tracker) throws IOException {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> List<Path> result = new ArrayList<>();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> int cellsCount = snapshot.getCellsCount();<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> if (cellsCount == 0) return result; // don't flush if there are no entries<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> InternalScanner scanner = createScanner(snapshot.getScanners(), tracker);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> // Let policy select flush method.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> StripeFlushRequest req = this.policy.selectFlush(store.getComparator(), this.stripes,<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> cellsCount);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> boolean success = false;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> StripeMultiFileWriter mw = null;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> try {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> mw = req.createWriter(); // Writer according to the policy.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> StripeMultiFileWriter.WriterFactory factory = createWriterFactory(cellsCount);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> StoreScanner storeScanner = (scanner instanceof StoreScanner) ? (StoreScanner)scanner : null;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> mw.init(storeScanner, factory);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> synchronized (flushLock) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> performFlush(scanner, mw, throughputController);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> result = mw.commitWriters(cacheFlushSeqNum, false);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> success = true;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> } finally {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> if (!success && (mw != null)) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> for (Path leftoverFile : mw.abortWriters()) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> try {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> store.getFileSystem().delete(leftoverFile, false);<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> } catch (Exception e) {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> LOG.error("Failed to delete a file after failed flush: " + e);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> }<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> try {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> scanner.close();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> } catch (IOException ex) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> LOG.warn("Failed to close flush scanner, ignoring", ex);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> return result;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> }<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> private StripeMultiFileWriter.WriterFactory createWriterFactory(final long kvCount) {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return new StripeMultiFileWriter.WriterFactory() {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> @Override<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> public StoreFileWriter createWriter() throws IOException {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> StoreFileWriter writer = store.createWriterInTmp(kvCount,<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> store.getColumnFamilyDescriptor().getCompressionType(), false, true, true, false);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> return writer;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> };<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> /** Stripe flush request wrapper that writes a non-striped file. */<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public static class StripeFlushRequest {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> protected final CellComparator comparator;<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> public StripeFlushRequest(CellComparator comparator) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> this.comparator = comparator;<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> @VisibleForTesting<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public StripeMultiFileWriter createWriter() throws IOException {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> StripeMultiFileWriter writer = new StripeMultiFileWriter.SizeMultiWriter(comparator, 1,<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> Long.MAX_VALUE, OPEN_KEY, OPEN_KEY);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> writer.setNoStripeMetadata();<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> return writer;<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> /** Stripe flush request wrapper based on boundaries. */<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> public static class BoundaryStripeFlushRequest extends StripeFlushRequest {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private final List<byte[]> targetBoundaries;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> /** @param targetBoundaries New files should be written with these boundaries. */<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public BoundaryStripeFlushRequest(CellComparator comparator, List<byte[]> targetBoundaries) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> super(comparator);<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> this.targetBoundaries = targetBoundaries;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> @Override<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> public StripeMultiFileWriter createWriter() throws IOException {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> return new StripeMultiFileWriter.BoundaryMultiWriter(comparator, targetBoundaries, null,<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> null);<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<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> /** Stripe flush request wrapper based on size. */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public static class SizeStripeFlushRequest extends StripeFlushRequest {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> private final int targetCount;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> private final long targetKvs;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> /**<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * @param targetCount The maximum number of stripes to flush into.<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @param targetKvs The KV count of each segment. If targetKvs*targetCount is less than<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * total number of kvs, all the overflow data goes into the last stripe.<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> */<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> public SizeStripeFlushRequest(CellComparator comparator, int targetCount, long targetKvs) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> super(comparator);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> this.targetCount = targetCount;<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> this.targetKvs = targetKvs;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> @Override<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> public StripeMultiFileWriter createWriter() throws IOException {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> return new StripeMultiFileWriter.SizeMultiWriter(comparator, this.targetCount, this.targetKvs,<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> OPEN_KEY, OPEN_KEY);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> }<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span>}<a name="line.170"></a> |
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