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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.regionserver;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.hadoop.hbase.NotServingRegionException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.client.IsolationLevel;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.executor.EventType;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.procedure2.BaseRSProcedureCallable;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.slf4j.Logger;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">030</span><span id="line-30"></span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.SnapshotRegionParameter;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35">@InterfaceAudience.Private</span> |
| <span class="source-line-no">036</span><span id="line-36">public class SnapshotRegionCallable extends BaseRSProcedureCallable {</span> |
| <span class="source-line-no">037</span><span id="line-37"> private static final Logger LOG = LoggerFactory.getLogger(SnapshotRegionCallable.class);</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> private SnapshotDescription snapshot;</span> |
| <span class="source-line-no">040</span><span id="line-40"> private RegionInfo regionInfo;</span> |
| <span class="source-line-no">041</span><span id="line-41"> private ForeignExceptionDispatcher monitor;</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43"> @Override</span> |
| <span class="source-line-no">044</span><span id="line-44"> protected void doCall() throws Exception {</span> |
| <span class="source-line-no">045</span><span id="line-45"> HRegion region = rs.getRegion(regionInfo.getEncodedName());</span> |
| <span class="source-line-no">046</span><span id="line-46"> if (region == null) {</span> |
| <span class="source-line-no">047</span><span id="line-47"> throw new NotServingRegionException(</span> |
| <span class="source-line-no">048</span><span id="line-48"> "snapshot=" + snapshot.getName() + ", region=" + regionInfo.getRegionNameAsString());</span> |
| <span class="source-line-no">049</span><span id="line-49"> }</span> |
| <span class="source-line-no">050</span><span id="line-50"> LOG.debug("Starting snapshot operation on {}", region);</span> |
| <span class="source-line-no">051</span><span id="line-51"> region.startRegionOperation(Region.Operation.SNAPSHOT);</span> |
| <span class="source-line-no">052</span><span id="line-52"> try {</span> |
| <span class="source-line-no">053</span><span id="line-53"> if (snapshot.getType() == SnapshotDescription.Type.FLUSH) {</span> |
| <span class="source-line-no">054</span><span id="line-54"> boolean succeeded = false;</span> |
| <span class="source-line-no">055</span><span id="line-55"> long readPt = region.getReadPoint(IsolationLevel.READ_COMMITTED);</span> |
| <span class="source-line-no">056</span><span id="line-56"> int retryTimes = rs.getConfiguration().getInt("hbase.snapshot.flush.retryTimes", 3);</span> |
| <span class="source-line-no">057</span><span id="line-57"> for (int i = 0; i < retryTimes; i++) {</span> |
| <span class="source-line-no">058</span><span id="line-58"> HRegion.FlushResult res = region.flush(true);</span> |
| <span class="source-line-no">059</span><span id="line-59"> if (res.getResult() == HRegion.FlushResult.Result.CANNOT_FLUSH) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> region.waitForFlushes();</span> |
| <span class="source-line-no">061</span><span id="line-61"> if (region.getMaxFlushedSeqId() >= readPt) {</span> |
| <span class="source-line-no">062</span><span id="line-62"> succeeded = true;</span> |
| <span class="source-line-no">063</span><span id="line-63"> break;</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"> } else {</span> |
| <span class="source-line-no">066</span><span id="line-66"> succeeded = true;</span> |
| <span class="source-line-no">067</span><span id="line-67"> break;</span> |
| <span class="source-line-no">068</span><span id="line-68"> }</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> if (!succeeded) {</span> |
| <span class="source-line-no">071</span><span id="line-71"> throw new IOException("Unable to complete flush " + regionInfo.getRegionNameAsString()</span> |
| <span class="source-line-no">072</span><span id="line-72"> + " after " + retryTimes + " attempts");</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> LOG.debug("Snapshotting region {} for {} completed.", region, snapshot.getName());</span> |
| <span class="source-line-no">076</span><span id="line-76"> region.addRegionToSnapshot(snapshot, monitor);</span> |
| <span class="source-line-no">077</span><span id="line-77"> } finally {</span> |
| <span class="source-line-no">078</span><span id="line-78"> LOG.debug("Closing snapshot operation on {}", region);</span> |
| <span class="source-line-no">079</span><span id="line-79"> region.closeRegionOperation(Region.Operation.SNAPSHOT);</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"> }</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> @Override</span> |
| <span class="source-line-no">084</span><span id="line-84"> protected void initParameter(byte[] parameter) throws Exception {</span> |
| <span class="source-line-no">085</span><span id="line-85"> SnapshotRegionParameter param = SnapshotRegionParameter.parseFrom(parameter);</span> |
| <span class="source-line-no">086</span><span id="line-86"> this.snapshot = param.getSnapshot();</span> |
| <span class="source-line-no">087</span><span id="line-87"> this.regionInfo = ProtobufUtil.toRegionInfo(param.getRegion());</span> |
| <span class="source-line-no">088</span><span id="line-88"> this.monitor = new ForeignExceptionDispatcher(snapshot.getName());</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> @Override</span> |
| <span class="source-line-no">092</span><span id="line-92"> public EventType getEventType() {</span> |
| <span class="source-line-no">093</span><span id="line-93"> return EventType.RS_SNAPSHOT_REGIONS;</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95">}</span> |
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| </pre> |
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