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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.master.janitor;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.ArrayList;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Collection;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Collections;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.HashSet;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Optional;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Set;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.SortedSet;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.TreeSet;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.stream.Collectors;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HConstants;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.TableName;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.exceptions.MergeRegionException;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.assignment.TransitRegionStateProcedure;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.replication.ReplicationException;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.slf4j.Logger;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.slf4j.LoggerFactory;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.hbase.thirdparty.com.google.common.collect.ArrayListMultimap;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.hbase.thirdparty.com.google.common.collect.ListMultimap;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span>/**<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Server-side fixing of bad or inconsistent state in hbase:meta.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * Distinct from MetaTableAccessor because {@link MetaTableAccessor} is about low-level<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * manipulations driven by the Master. This class MetaFixer is<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * employed by the Master and it 'knows' about holes and orphans<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * and encapsulates their fixing on behalf of the Master.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>public class MetaFixer {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static final Logger LOG = LoggerFactory.getLogger(MetaFixer.class);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final String MAX_MERGE_COUNT_KEY = "hbase.master.metafixer.max.merge.count";<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private static final int MAX_MERGE_COUNT_DEFAULT = 64;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private final MasterServices masterServices;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> /**<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * Maximum for many regions to merge at a time.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private final int maxMergeCount;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> public MetaFixer(MasterServices masterServices) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> this.masterServices = masterServices;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> this.maxMergeCount = this.masterServices.getConfiguration().<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> getInt(MAX_MERGE_COUNT_KEY, MAX_MERGE_COUNT_DEFAULT);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> }<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public void fix() throws IOException {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> Report report = this.masterServices.getCatalogJanitor().getLastReport();<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> if (report == null) {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> LOG.info("CatalogJanitor has not generated a report yet; run 'catalogjanitor_run' in " +<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> "shell or wait until CatalogJanitor chore runs.");<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> return;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> fixHoles(report);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> fixOverlaps(report);<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> // Run the ReplicationBarrierCleaner here; it may clear out rep_barrier rows which<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> // can help cleaning up damaged hbase:meta.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> this.masterServices.runReplicationBarrierCleaner();<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> /**<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * If hole, it papers it over by adding a region in the filesystem and to hbase:meta.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * Does not assign.<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> */<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> void fixHoles(Report report) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> final List<Pair<RegionInfo, RegionInfo>> holes = report.getHoles();<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> if (holes.isEmpty()) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> LOG.info("CatalogJanitor Report contains no holes to fix. Skipping.");<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> return;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> LOG.info("Identified {} region holes to fix. Detailed fixup progress logged at DEBUG.",<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> holes.size());<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> final List<RegionInfo> newRegionInfos = createRegionInfosForHoles(holes);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> final List<RegionInfo> newMetaEntries = createMetaEntries(masterServices, newRegionInfos);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> final TransitRegionStateProcedure[] assignProcedures = masterServices<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> .getAssignmentManager()<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> .createRoundRobinAssignProcedures(newMetaEntries);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> masterServices.getMasterProcedureExecutor().submitProcedures(assignProcedures);<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> LOG.info(<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> "Scheduled {}/{} new regions for assignment.", assignProcedures.length, holes.size());<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> /**<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * Create a new {@link RegionInfo} corresponding to each provided "hole" pair.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> */<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> private static List<RegionInfo> createRegionInfosForHoles(<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> final List<Pair<RegionInfo, RegionInfo>> holes) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> final List<RegionInfo> newRegionInfos = holes.stream()<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> .map(MetaFixer::getHoleCover)<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> .filter(Optional::isPresent)<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> .map(Optional::get)<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> .collect(Collectors.toList());<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> LOG.debug("Constructed {}/{} RegionInfo descriptors corresponding to identified holes.",<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> newRegionInfos.size(), holes.size());<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> return newRegionInfos;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> /**<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @return Attempts to calculate a new {@link RegionInfo} that covers the region range described<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * in {@code hole}.<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> private static Optional<RegionInfo> getHoleCover(Pair<RegionInfo, RegionInfo> hole) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> final RegionInfo left = hole.getFirst();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> final RegionInfo right = hole.getSecond();<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> if (left.getTable().equals(right.getTable())) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> // Simple case.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> if (Bytes.compareTo(left.getEndKey(), right.getStartKey()) >= 0) {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> LOG.warn("Skipping hole fix; left-side endKey is not less than right-side startKey;"<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> + " left=<{}>, right=<{}>", left, right);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> return Optional.empty();<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> return Optional.of(buildRegionInfo(left.getTable(), left.getEndKey(), right.getStartKey()));<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> }<a name="line.149"></a> |
| <span class="sourceLineNo">150</span><a name="line.150"></a> |
| <span class="sourceLineNo">151</span> final boolean leftUndefined = left.equals(RegionInfoBuilder.UNDEFINED);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> final boolean rightUndefined = right.equals(RegionInfoBuilder.UNDEFINED);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> final boolean last = left.isLast();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> final boolean first = right.isFirst();<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> if (leftUndefined && rightUndefined) {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> LOG.warn("Skipping hole fix; both the hole left-side and right-side RegionInfos are " +<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> "UNDEFINED; left=<{}>, right=<{}>", left, right);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> return Optional.empty();<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> if (leftUndefined || last) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> return Optional.of(<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> buildRegionInfo(right.getTable(), HConstants.EMPTY_START_ROW, right.getStartKey()));<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> if (rightUndefined || first) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> return Optional.of(<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> buildRegionInfo(left.getTable(), left.getEndKey(), HConstants.EMPTY_END_ROW));<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> LOG.warn("Skipping hole fix; don't know what to do with left=<{}>, right=<{}>", left, right);<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> return Optional.empty();<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> private static RegionInfo buildRegionInfo(TableName tn, byte [] start, byte [] end) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> return RegionInfoBuilder.newBuilder(tn).setStartKey(start).setEndKey(end).build();<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> /**<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * Create entries in the {@code hbase:meta} for each provided {@link RegionInfo}. Best effort.<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * @param masterServices used to connect to {@code hbase:meta}<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @param newRegionInfos the new {@link RegionInfo} entries to add to the filesystem<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * @return a list of {@link RegionInfo} entries for which {@code hbase:meta} entries were<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * successfully created<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> */<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> private static List<RegionInfo> createMetaEntries(final MasterServices masterServices,<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> final List<RegionInfo> newRegionInfos) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> final List<Either<List<RegionInfo>, IOException>> addMetaEntriesResults = newRegionInfos.<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> stream().map(regionInfo -> {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> try {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> TableDescriptor td = masterServices.getTableDescriptors().get(regionInfo.getTable());<a name="line.189"></a> |
| <span class="sourceLineNo">190</span><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> // Add replicas if needed<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> // we need to create regions with replicaIds starting from 1<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> List<RegionInfo> newRegions = RegionReplicaUtil<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> .addReplicas(Collections.singletonList(regionInfo), 1, td.getRegionReplication());<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> // Add regions to META<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> MetaTableAccessor.addRegionsToMeta(masterServices.getConnection(), newRegions,<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> td.getRegionReplication());<a name="line.198"></a> |
| <span class="sourceLineNo">199</span><a name="line.199"></a> |
| <span class="sourceLineNo">200</span> // Setup replication for region replicas if needed<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> if (td.getRegionReplication() > 1) {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> ServerRegionReplicaUtil.setupRegionReplicaReplication(masterServices);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> return Either.<List<RegionInfo>, IOException> ofLeft(newRegions);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> } catch (IOException e) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> return Either.<List<RegionInfo>, IOException> ofRight(e);<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> } catch (ReplicationException e) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> return Either.<List<RegionInfo>, IOException> ofRight(new HBaseIOException(e));<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> })<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> .collect(Collectors.toList());<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> final List<RegionInfo> createMetaEntriesSuccesses = addMetaEntriesResults.stream()<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> .filter(Either::hasLeft)<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> .map(Either::getLeft)<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> .flatMap(List::stream)<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> .collect(Collectors.toList());<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> final List<IOException> createMetaEntriesFailures = addMetaEntriesResults.stream()<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> .filter(Either::hasRight)<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> .map(Either::getRight)<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> .collect(Collectors.toList());<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> LOG.debug("Added {}/{} entries to hbase:meta",<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> createMetaEntriesSuccesses.size(), newRegionInfos.size());<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> if (!createMetaEntriesFailures.isEmpty()) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> LOG.warn("Failed to create entries in hbase:meta for {}/{} RegionInfo descriptors. First"<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> + " failure message included; full list of failures with accompanying stack traces is"<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> + " available at log level DEBUG. message={}", createMetaEntriesFailures.size(),<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> addMetaEntriesResults.size(), createMetaEntriesFailures.get(0).getMessage());<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> if (LOG.isDebugEnabled()) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> createMetaEntriesFailures.forEach(<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> ioe -> LOG.debug("Attempt to fix region hole in hbase:meta failed.", ioe));<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span><a name="line.234"></a> |
| <span class="sourceLineNo">235</span> return createMetaEntriesSuccesses;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> /**<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * Fix overlaps noted in CJ consistency report.<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> */<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> List<Long> fixOverlaps(Report report) throws IOException {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> List<Long> pidList = new ArrayList<>();<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> for (Set<RegionInfo> regions: calculateMerges(maxMergeCount, report.getOverlaps())) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> RegionInfo [] regionsArray = regions.toArray(new RegionInfo [] {});<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> try {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> pidList.add(this.masterServices<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> .mergeRegions(regionsArray, true, HConstants.NO_NONCE, HConstants.NO_NONCE));<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> } catch (MergeRegionException mre) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> LOG.warn("Failed overlap fix of {}", regionsArray, mre);<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> return pidList;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span><a name="line.254"></a> |
| <span class="sourceLineNo">255</span> /**<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * Run through <code>overlaps</code> and return a list of merges to run.<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * Presumes overlaps are ordered (which they are coming out of the CatalogJanitor<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * consistency report).<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @param maxMergeCount Maximum regions to merge at a time (avoid merging<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * 100k regions in one go!)<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> */<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> static List<SortedSet<RegionInfo>> calculateMerges(int maxMergeCount,<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> List<Pair<RegionInfo, RegionInfo>> overlaps) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> if (overlaps.isEmpty()) {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> LOG.debug("No overlaps.");<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> return Collections.emptyList();<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> List<SortedSet<RegionInfo>> merges = new ArrayList<>();<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> // First group overlaps by table then calculate merge table by table.<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> ListMultimap<TableName, Pair<RegionInfo, RegionInfo>> overlapGroups =<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> ArrayListMultimap.create();<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> for (Pair<RegionInfo, RegionInfo> pair : overlaps) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> overlapGroups.put(pair.getFirst().getTable(), pair);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> for (Map.Entry<TableName, Collection<Pair<RegionInfo, RegionInfo>>> entry : overlapGroups<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> .asMap().entrySet()) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> calculateTableMerges(maxMergeCount, merges, entry.getValue());<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> return merges;<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span><a name="line.281"></a> |
| <span class="sourceLineNo">282</span> private static void calculateTableMerges(int maxMergeCount, List<SortedSet<RegionInfo>> merges,<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> Collection<Pair<RegionInfo, RegionInfo>> overlaps) {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> SortedSet<RegionInfo> currentMergeSet = new TreeSet<>();<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> HashSet<RegionInfo> regionsInMergeSet = new HashSet<>();<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> RegionInfo regionInfoWithlargestEndKey = null;<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> for (Pair<RegionInfo, RegionInfo> pair: overlaps) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> if (regionInfoWithlargestEndKey != null) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> if (!isOverlap(regionInfoWithlargestEndKey, pair) ||<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> currentMergeSet.size() >= maxMergeCount) {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> // Log when we cut-off-merge because we hit the configured maximum merge limit.<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> if (currentMergeSet.size() >= maxMergeCount) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> LOG.warn("Ran into maximum-at-a-time merges limit={}", maxMergeCount);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> // In the case of the merge set contains only 1 region or empty, it does not need to<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // submit this merge request as no merge is going to happen. currentMergeSet can be<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // reused in this case.<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> if (currentMergeSet.size() <= 1) {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> for (RegionInfo ri : currentMergeSet) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> regionsInMergeSet.remove(ri);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> currentMergeSet.clear();<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> } else {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> merges.add(currentMergeSet);<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> currentMergeSet = new TreeSet<>();<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> }<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span><a name="line.310"></a> |
| <span class="sourceLineNo">311</span> // Do not add the same region into multiple merge set, this will fail<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> // the second merge request.<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> if (!regionsInMergeSet.contains(pair.getFirst())) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> currentMergeSet.add(pair.getFirst());<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> regionsInMergeSet.add(pair.getFirst());<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> if (!regionsInMergeSet.contains(pair.getSecond())) {<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> currentMergeSet.add(pair.getSecond());<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> regionsInMergeSet.add(pair.getSecond());<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> }<a name="line.320"></a> |
| <span class="sourceLineNo">321</span><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> regionInfoWithlargestEndKey = getRegionInfoWithLargestEndKey(<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> getRegionInfoWithLargestEndKey(pair.getFirst(), pair.getSecond()),<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> regionInfoWithlargestEndKey);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> }<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> merges.add(currentMergeSet);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<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> * @return Either <code>a</code> or <code>b</code>, whichever has the<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> * endkey that is furthest along in the Table.<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> */<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> static RegionInfo getRegionInfoWithLargestEndKey(RegionInfo a, RegionInfo b) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> if (a == null) {<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> // b may be null.<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> return b;<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> if (b == null) {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> // Both are null. The return is not-defined.<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> return a;<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> }<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> if (!a.getTable().equals(b.getTable())) {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> // This is an odd one. This should be the right answer.<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> return b;<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> }<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> if (a.isLast()) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> return a;<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> if (b.isLast()) {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> return b;<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> }<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> int compare = Bytes.compareTo(a.getEndKey(), b.getEndKey());<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> return compare == 0 || compare > 0? a: b;<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span><a name="line.355"></a> |
| <span class="sourceLineNo">356</span> /**<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> * @return True if an overlap found between passed in <code>ri</code> and<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> * the <code>pair</code>. Does NOT check the pairs themselves overlap.<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> */<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> static boolean isOverlap(RegionInfo ri, Pair<RegionInfo, RegionInfo> pair) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> if (ri == null || pair == null) {<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> // Can't be an overlap in either of these cases.<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> return false;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> return ri.isOverlap(pair.getFirst()) || ri.isOverlap(pair.getSecond());<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> /**<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> * A union over {@link L} and {@link R}.<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> */<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> private static class Either<L, R> {<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> private final L left;<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> private final R right;<a name="line.373"></a> |
| <span class="sourceLineNo">374</span><a name="line.374"></a> |
| <span class="sourceLineNo">375</span> public static <L, R> Either<L, R> ofLeft(L left) {<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> return new Either<>(left, null);<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> }<a name="line.377"></a> |
| <span class="sourceLineNo">378</span><a name="line.378"></a> |
| <span class="sourceLineNo">379</span> public static <L, R> Either<L, R> ofRight(R right) {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return new Either<>(null, right);<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> Either(L left, R right) {<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> this.left = left;<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> this.right = right;<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> }<a name="line.386"></a> |
| <span class="sourceLineNo">387</span><a name="line.387"></a> |
| <span class="sourceLineNo">388</span> public boolean hasLeft() {<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> return left != null;<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> public L getLeft() {<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> if (!hasLeft()) {<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> throw new IllegalStateException("Either contains no left.");<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> return left;<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> }<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> public boolean hasRight() {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> return right != null;<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> }<a name="line.401"></a> |
| <span class="sourceLineNo">402</span><a name="line.402"></a> |
| <span class="sourceLineNo">403</span> public R getRight() {<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> if (!hasRight()) {<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> throw new IllegalStateException("Either contains no right.");<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> return right;<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> }<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> }<a name="line.409"></a> |
| <span class="sourceLineNo">410</span>}<a name="line.410"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
