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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.mob;</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.util.concurrent.ConcurrentHashMap;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.ConcurrentMap;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.fs.FileStatus;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseInterfaceAudience;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.master.cleaner.BaseHFileCleanerDelegate;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.CommonFSUtils;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.slf4j.Logger;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">031</span><span id="line-31"></span> |
| <span class="source-line-no">032</span><span id="line-32">/**</span> |
| <span class="source-line-no">033</span><span id="line-33"> * {@link BaseHFileCleanerDelegate} that prevents cleaning HFiles from a mob region keeps a map of</span> |
| <span class="source-line-no">034</span><span id="line-34"> * table name strings to mob region name strings over the life of a JVM instance. if there's churn</span> |
| <span class="source-line-no">035</span><span id="line-35"> * of unique table names we'll eat memory until Master restart.</span> |
| <span class="source-line-no">036</span><span id="line-36"> */</span> |
| <span class="source-line-no">037</span><span id="line-37">@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)</span> |
| <span class="source-line-no">038</span><span id="line-38">public class ManualMobMaintHFileCleaner extends BaseHFileCleanerDelegate {</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> private static final Logger LOG = LoggerFactory.getLogger(ManualMobMaintHFileCleaner.class);</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42"> // We need to avoid making HRegionInfo objects for every table we check.</span> |
| <span class="source-line-no">043</span><span id="line-43"> private static final ConcurrentMap<TableName, String> MOB_REGIONS = new ConcurrentHashMap<>();</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> @Override</span> |
| <span class="source-line-no">046</span><span id="line-46"> public boolean isFileDeletable(FileStatus fStat) {</span> |
| <span class="source-line-no">047</span><span id="line-47"> try {</span> |
| <span class="source-line-no">048</span><span id="line-48"> // if its a directory, then it can be deleted</span> |
| <span class="source-line-no">049</span><span id="line-49"> if (fStat.isDirectory()) {</span> |
| <span class="source-line-no">050</span><span id="line-50"> return true;</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> Path file = fStat.getPath();</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> // we need the table and region to determine if this is from a mob region</span> |
| <span class="source-line-no">056</span><span id="line-56"> // we don't need to worry about hfilelink back references, because the hfilelink cleaner will</span> |
| <span class="source-line-no">057</span><span id="line-57"> // retain them.</span> |
| <span class="source-line-no">058</span><span id="line-58"> Path family = file.getParent();</span> |
| <span class="source-line-no">059</span><span id="line-59"> Path region = family.getParent();</span> |
| <span class="source-line-no">060</span><span id="line-60"> Path table = region.getParent();</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> TableName tableName = CommonFSUtils.getTableName(table);</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> String mobRegion = MOB_REGIONS.get(tableName);</span> |
| <span class="source-line-no">065</span><span id="line-65"> if (mobRegion == null) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> String tmp = MobUtils.getMobRegionInfo(tableName).getEncodedName();</span> |
| <span class="source-line-no">067</span><span id="line-67"> if (tmp == null) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> LOG.error("couldn't determine mob region for table {} keeping files just in case.",</span> |
| <span class="source-line-no">069</span><span id="line-69"> tableName);</span> |
| <span class="source-line-no">070</span><span id="line-70"> return false;</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"> mobRegion = MOB_REGIONS.putIfAbsent(tableName, tmp);</span> |
| <span class="source-line-no">073</span><span id="line-73"> // a return of null means that tmp is now in the map for future lookups.</span> |
| <span class="source-line-no">074</span><span id="line-74"> if (mobRegion == null) {</span> |
| <span class="source-line-no">075</span><span id="line-75"> mobRegion = tmp;</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"> LOG.debug("Had to calculate name of mob region for table {} and it is {}", tableName,</span> |
| <span class="source-line-no">078</span><span id="line-78"> mobRegion);</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> boolean ret = !mobRegion.equals(region.getName());</span> |
| <span class="source-line-no">082</span><span id="line-82"> if (LOG.isDebugEnabled() && !ret) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> LOG.debug("Keeping file '{}' because it is from mob dir", fStat.getPath());</span> |
| <span class="source-line-no">084</span><span id="line-84"> }</span> |
| <span class="source-line-no">085</span><span id="line-85"> return ret;</span> |
| <span class="source-line-no">086</span><span id="line-86"> } catch (RuntimeException e) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> LOG.error("Failed to determine mob status of '{}', keeping it just in case.", fStat.getPath(),</span> |
| <span class="source-line-no">088</span><span id="line-88"> e);</span> |
| <span class="source-line-no">089</span><span id="line-89"> return false;</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"> }</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93">}</span> |
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| </pre> |
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