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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.master;</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 edu.umd.cs.findbugs.annotations.NonNull;</span> |
| <span class="source-line-no">021</span><span id="line-21">import edu.umd.cs.findbugs.annotations.Nullable;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Set;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.concurrent.ConcurrentHashMap;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.ConcurrentMap;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.locks.ReadWriteLock;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.CatalogFamilyFormat;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.ClientMetaTableAccessor;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.MetaTableAccessor;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.TableNotFoundException;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.client.Result;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.client.TableState;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.exceptions.IllegalArgumentIOException;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.util.IdReadWriteLock;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.util.IdReadWriteLockWithObjectPool;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.Logger;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hbase.thirdparty.com.google.common.collect.Sets;</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43">/**</span> |
| <span class="source-line-no">044</span><span id="line-44"> * This is a helper class used to manage table states. This class uses hbase:meta as its store for</span> |
| <span class="source-line-no">045</span><span id="line-45"> * table state so hbase:meta must be online before accessing its methods.</span> |
| <span class="source-line-no">046</span><span id="line-46"> */</span> |
| <span class="source-line-no">047</span><span id="line-47">@InterfaceAudience.Private</span> |
| <span class="source-line-no">048</span><span id="line-48">public class TableStateManager {</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> private static final Logger LOG = LoggerFactory.getLogger(TableStateManager.class);</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> private final IdReadWriteLock<TableName> tnLock = new IdReadWriteLockWithObjectPool<>();</span> |
| <span class="source-line-no">053</span><span id="line-53"> private final MasterServices master;</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> private final ConcurrentMap<TableName, TableState.State> tableName2State =</span> |
| <span class="source-line-no">056</span><span id="line-56"> new ConcurrentHashMap<>();</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> TableStateManager(MasterServices master) {</span> |
| <span class="source-line-no">059</span><span id="line-59"> this.master = master;</span> |
| <span class="source-line-no">060</span><span id="line-60"> }</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> /**</span> |
| <span class="source-line-no">063</span><span id="line-63"> * Set table state to provided. Caller should lock table on write.</span> |
| <span class="source-line-no">064</span><span id="line-64"> * @param tableName table to change state for</span> |
| <span class="source-line-no">065</span><span id="line-65"> * @param newState new state</span> |
| <span class="source-line-no">066</span><span id="line-66"> */</span> |
| <span class="source-line-no">067</span><span id="line-67"> public void setTableState(TableName tableName, TableState.State newState) throws IOException {</span> |
| <span class="source-line-no">068</span><span id="line-68"> ReadWriteLock lock = tnLock.getLock(tableName);</span> |
| <span class="source-line-no">069</span><span id="line-69"> lock.writeLock().lock();</span> |
| <span class="source-line-no">070</span><span id="line-70"> try {</span> |
| <span class="source-line-no">071</span><span id="line-71"> updateMetaState(tableName, newState);</span> |
| <span class="source-line-no">072</span><span id="line-72"> } finally {</span> |
| <span class="source-line-no">073</span><span id="line-73"> lock.writeLock().unlock();</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> }</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> public boolean isTableState(TableName tableName, TableState.State... states) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> try {</span> |
| <span class="source-line-no">079</span><span id="line-79"> TableState tableState = getTableState(tableName);</span> |
| <span class="source-line-no">080</span><span id="line-80"> return tableState.isInStates(states);</span> |
| <span class="source-line-no">081</span><span id="line-81"> } catch (IOException e) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> LOG.error("Unable to get table " + tableName + " state", e);</span> |
| <span class="source-line-no">083</span><span id="line-83"> // XXX: is it safe to just return false here?</span> |
| <span class="source-line-no">084</span><span id="line-84"> return false;</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> public void setDeletedTable(TableName tableName) throws IOException {</span> |
| <span class="source-line-no">089</span><span id="line-89"> if (tableName.equals(TableName.META_TABLE_NAME)) {</span> |
| <span class="source-line-no">090</span><span id="line-90"> // Can't delete the hbase:meta table.</span> |
| <span class="source-line-no">091</span><span id="line-91"> return;</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"> ReadWriteLock lock = tnLock.getLock(tableName);</span> |
| <span class="source-line-no">094</span><span id="line-94"> lock.writeLock().lock();</span> |
| <span class="source-line-no">095</span><span id="line-95"> try {</span> |
| <span class="source-line-no">096</span><span id="line-96"> MetaTableAccessor.deleteTableState(master.getConnection(), tableName);</span> |
| <span class="source-line-no">097</span><span id="line-97"> } finally {</span> |
| <span class="source-line-no">098</span><span id="line-98"> tableName2State.remove(tableName);</span> |
| <span class="source-line-no">099</span><span id="line-99"> lock.writeLock().unlock();</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> public boolean isTablePresent(TableName tableName) throws IOException {</span> |
| <span class="source-line-no">104</span><span id="line-104"> ReadWriteLock lock = tnLock.getLock(tableName);</span> |
| <span class="source-line-no">105</span><span id="line-105"> lock.readLock().lock();</span> |
| <span class="source-line-no">106</span><span id="line-106"> try {</span> |
| <span class="source-line-no">107</span><span id="line-107"> return readMetaState(tableName) != null;</span> |
| <span class="source-line-no">108</span><span id="line-108"> } finally {</span> |
| <span class="source-line-no">109</span><span id="line-109"> lock.readLock().unlock();</span> |
| <span class="source-line-no">110</span><span id="line-110"> }</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"></span> |
| <span class="source-line-no">113</span><span id="line-113"> /**</span> |
| <span class="source-line-no">114</span><span id="line-114"> * Return all tables in given states.</span> |
| <span class="source-line-no">115</span><span id="line-115"> * @param states filter by states</span> |
| <span class="source-line-no">116</span><span id="line-116"> * @return tables in given states</span> |
| <span class="source-line-no">117</span><span id="line-117"> */</span> |
| <span class="source-line-no">118</span><span id="line-118"> Set<TableName> getTablesInStates(TableState.State... states) throws IOException {</span> |
| <span class="source-line-no">119</span><span id="line-119"> // Only be called in region normalizer, will not use cache.</span> |
| <span class="source-line-no">120</span><span id="line-120"> final Set<TableName> rv = Sets.newHashSet();</span> |
| <span class="source-line-no">121</span><span id="line-121"> MetaTableAccessor.fullScanTables(master.getConnection(), new ClientMetaTableAccessor.Visitor() {</span> |
| <span class="source-line-no">122</span><span id="line-122"> @Override</span> |
| <span class="source-line-no">123</span><span id="line-123"> public boolean visit(Result r) throws IOException {</span> |
| <span class="source-line-no">124</span><span id="line-124"> TableState tableState = CatalogFamilyFormat.getTableState(r);</span> |
| <span class="source-line-no">125</span><span id="line-125"> if (tableState != null && tableState.inStates(states)) {</span> |
| <span class="source-line-no">126</span><span id="line-126"> rv.add(tableState.getTableName());</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"> return true;</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"> });</span> |
| <span class="source-line-no">131</span><span id="line-131"> return rv;</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> @NonNull</span> |
| <span class="source-line-no">135</span><span id="line-135"> public TableState getTableState(TableName tableName) throws IOException {</span> |
| <span class="source-line-no">136</span><span id="line-136"> ReadWriteLock lock = tnLock.getLock(tableName);</span> |
| <span class="source-line-no">137</span><span id="line-137"> lock.readLock().lock();</span> |
| <span class="source-line-no">138</span><span id="line-138"> try {</span> |
| <span class="source-line-no">139</span><span id="line-139"> TableState currentState = readMetaState(tableName);</span> |
| <span class="source-line-no">140</span><span id="line-140"> if (currentState == null) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> throw new TableNotFoundException("No state found for " + tableName);</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143"> return currentState;</span> |
| <span class="source-line-no">144</span><span id="line-144"> } finally {</span> |
| <span class="source-line-no">145</span><span id="line-145"> lock.readLock().unlock();</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"> }</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> private void updateMetaState(TableName tableName, TableState.State newState) throws IOException {</span> |
| <span class="source-line-no">150</span><span id="line-150"> if (tableName.equals(TableName.META_TABLE_NAME)) {</span> |
| <span class="source-line-no">151</span><span id="line-151"> if (</span> |
| <span class="source-line-no">152</span><span id="line-152"> TableState.State.DISABLING.equals(newState) || TableState.State.DISABLED.equals(newState)</span> |
| <span class="source-line-no">153</span><span id="line-153"> ) {</span> |
| <span class="source-line-no">154</span><span id="line-154"> throw new IllegalArgumentIOException("Cannot disable meta table; " + newState);</span> |
| <span class="source-line-no">155</span><span id="line-155"> }</span> |
| <span class="source-line-no">156</span><span id="line-156"> // Otherwise, just return; no need to set ENABLED on meta -- it is always ENABLED.</span> |
| <span class="source-line-no">157</span><span id="line-157"> return;</span> |
| <span class="source-line-no">158</span><span id="line-158"> }</span> |
| <span class="source-line-no">159</span><span id="line-159"> boolean succ = false;</span> |
| <span class="source-line-no">160</span><span id="line-160"> try {</span> |
| <span class="source-line-no">161</span><span id="line-161"> MetaTableAccessor.updateTableState(master.getConnection(), tableName, newState);</span> |
| <span class="source-line-no">162</span><span id="line-162"> tableName2State.put(tableName, newState);</span> |
| <span class="source-line-no">163</span><span id="line-163"> succ = true;</span> |
| <span class="source-line-no">164</span><span id="line-164"> } finally {</span> |
| <span class="source-line-no">165</span><span id="line-165"> if (!succ) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> this.tableName2State.remove(tableName);</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"> }</span> |
| <span class="source-line-no">169</span><span id="line-169"> }</span> |
| <span class="source-line-no">170</span><span id="line-170"></span> |
| <span class="source-line-no">171</span><span id="line-171"> @Nullable</span> |
| <span class="source-line-no">172</span><span id="line-172"> private TableState readMetaState(TableName tableName) throws IOException {</span> |
| <span class="source-line-no">173</span><span id="line-173"> TableState.State state = tableName2State.get(tableName);</span> |
| <span class="source-line-no">174</span><span id="line-174"> if (state != null) {</span> |
| <span class="source-line-no">175</span><span id="line-175"> return new TableState(tableName, state);</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> TableState tableState = MetaTableAccessor.getTableState(master.getConnection(), tableName);</span> |
| <span class="source-line-no">178</span><span id="line-178"> if (tableState != null) {</span> |
| <span class="source-line-no">179</span><span id="line-179"> tableName2State.putIfAbsent(tableName, tableState.getState());</span> |
| <span class="source-line-no">180</span><span id="line-180"> }</span> |
| <span class="source-line-no">181</span><span id="line-181"> return tableState;</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
