| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.namequeues, class: WALEventTrackerTableAccessor"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <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.namequeues;</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 static org.apache.hadoop.hbase.master.waleventtracker.WALEventTrackerTableCreator.WAL_EVENT_TRACKER_INFO_FAMILY;</span> |
| <span class="source-line-no">021</span><span id="line-21"></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.ArrayList;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.List;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.Queue;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.client.Connection;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.client.Put;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.client.Table;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.util.RetryCounter;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.util.RetryCounterFactory;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.Logger;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40">@InterfaceAudience.Private</span> |
| <span class="source-line-no">041</span><span id="line-41">public final class WALEventTrackerTableAccessor {</span> |
| <span class="source-line-no">042</span><span id="line-42"> private static final Logger LOG = LoggerFactory.getLogger(WALEventTrackerTableAccessor.class);</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> public static final String RS_COLUMN = "region_server_name";</span> |
| <span class="source-line-no">045</span><span id="line-45"> public static final String WAL_NAME_COLUMN = "wal_name";</span> |
| <span class="source-line-no">046</span><span id="line-46"> public static final String TIMESTAMP_COLUMN = "timestamp";</span> |
| <span class="source-line-no">047</span><span id="line-47"> public static final String WAL_STATE_COLUMN = "wal_state";</span> |
| <span class="source-line-no">048</span><span id="line-48"> public static final String WAL_LENGTH_COLUMN = "wal_length";</span> |
| <span class="source-line-no">049</span><span id="line-49"> public static final String MAX_ATTEMPTS_KEY = "wal.event.tracker.max.attempts";</span> |
| <span class="source-line-no">050</span><span id="line-50"> public static final String SLEEP_INTERVAL_KEY = "wal.event.tracker.sleep.interval.msec";</span> |
| <span class="source-line-no">051</span><span id="line-51"> public static final String MAX_SLEEP_TIME_KEY = "wal.event.tracker.max.sleep.time.msec";</span> |
| <span class="source-line-no">052</span><span id="line-52"> public static final int DEFAULT_MAX_ATTEMPTS = 3;</span> |
| <span class="source-line-no">053</span><span id="line-53"> public static final long DEFAULT_SLEEP_INTERVAL = 1000L; // 1 second</span> |
| <span class="source-line-no">054</span><span id="line-54"> public static final long DEFAULT_MAX_SLEEP_TIME = 60000L; // 60 seconds</span> |
| <span class="source-line-no">055</span><span id="line-55"> public static final String WAL_EVENT_TRACKER_TABLE_NAME_STR = "REPLICATION.WALEVENTTRACKER";</span> |
| <span class="source-line-no">056</span><span id="line-56"> public static final String DELIMITER = "_";</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> private WALEventTrackerTableAccessor() {</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</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"> * {@link #WAL_EVENT_TRACKER_TABLE_NAME_STR} table name - can be enabled with config -</span> |
| <span class="source-line-no">063</span><span id="line-63"> * hbase.regionserver.wal.event.tracker.enabled</span> |
| <span class="source-line-no">064</span><span id="line-64"> */</span> |
| <span class="source-line-no">065</span><span id="line-65"> public static final TableName WAL_EVENT_TRACKER_TABLE_NAME =</span> |
| <span class="source-line-no">066</span><span id="line-66"> TableName.valueOf(WAL_EVENT_TRACKER_TABLE_NAME_STR);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> private static void doPut(final Connection connection, final List<Put> puts) throws Exception {</span> |
| <span class="source-line-no">069</span><span id="line-69"> RetryCounter retryCounter = getRetryFactory(connection.getConfiguration()).create();</span> |
| <span class="source-line-no">070</span><span id="line-70"> while (true) {</span> |
| <span class="source-line-no">071</span><span id="line-71"> try (Table table = connection.getTable(WAL_EVENT_TRACKER_TABLE_NAME)) {</span> |
| <span class="source-line-no">072</span><span id="line-72"> table.put(puts);</span> |
| <span class="source-line-no">073</span><span id="line-73"> return;</span> |
| <span class="source-line-no">074</span><span id="line-74"> } catch (IOException ioe) {</span> |
| <span class="source-line-no">075</span><span id="line-75"> retryOrThrow(retryCounter, ioe);</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"> retryCounter.sleepUntilNextRetry();</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</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"> private static RetryCounterFactory getRetryFactory(Configuration conf) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> int maxAttempts = conf.getInt(MAX_ATTEMPTS_KEY, DEFAULT_MAX_ATTEMPTS);</span> |
| <span class="source-line-no">083</span><span id="line-83"> long sleepIntervalMs = conf.getLong(SLEEP_INTERVAL_KEY, DEFAULT_SLEEP_INTERVAL);</span> |
| <span class="source-line-no">084</span><span id="line-84"> long maxSleepTimeMs = conf.getLong(MAX_SLEEP_TIME_KEY, DEFAULT_MAX_SLEEP_TIME);</span> |
| <span class="source-line-no">085</span><span id="line-85"> RetryCounter.RetryConfig retryConfig =</span> |
| <span class="source-line-no">086</span><span id="line-86"> new RetryCounter.RetryConfig(maxAttempts, sleepIntervalMs, maxSleepTimeMs,</span> |
| <span class="source-line-no">087</span><span id="line-87"> TimeUnit.MILLISECONDS, new RetryCounter.ExponentialBackoffPolicyWithLimit());</span> |
| <span class="source-line-no">088</span><span id="line-88"> return new RetryCounterFactory(retryConfig);</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"> private static void retryOrThrow(RetryCounter retryCounter, IOException ioe) throws IOException {</span> |
| <span class="source-line-no">092</span><span id="line-92"> if (retryCounter.shouldRetry()) {</span> |
| <span class="source-line-no">093</span><span id="line-93"> return;</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95"> throw ioe;</span> |
| <span class="source-line-no">096</span><span id="line-96"> }</span> |
| <span class="source-line-no">097</span><span id="line-97"></span> |
| <span class="source-line-no">098</span><span id="line-98"> /**</span> |
| <span class="source-line-no">099</span><span id="line-99"> * Add wal event tracker rows to hbase:waleventtracker table</span> |
| <span class="source-line-no">100</span><span id="line-100"> * @param walEventPayloads List of walevents to process</span> |
| <span class="source-line-no">101</span><span id="line-101"> * @param connection Connection to use.</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 static void addWalEventTrackerRows(Queue<WALEventTrackerPayload> walEventPayloads,</span> |
| <span class="source-line-no">104</span><span id="line-104"> final Connection connection) throws Exception {</span> |
| <span class="source-line-no">105</span><span id="line-105"> List<Put> puts = new ArrayList<>(walEventPayloads.size());</span> |
| <span class="source-line-no">106</span><span id="line-106"> for (WALEventTrackerPayload payload : walEventPayloads) {</span> |
| <span class="source-line-no">107</span><span id="line-107"> final byte[] rowKey = getRowKey(payload);</span> |
| <span class="source-line-no">108</span><span id="line-108"> final Put put = new Put(rowKey);</span> |
| <span class="source-line-no">109</span><span id="line-109"> // TODO Do we need to SKIP_WAL ?</span> |
| <span class="source-line-no">110</span><span id="line-110"> put.setPriority(HConstants.NORMAL_QOS);</span> |
| <span class="source-line-no">111</span><span id="line-111"> put</span> |
| <span class="source-line-no">112</span><span id="line-112"> .addColumn(WAL_EVENT_TRACKER_INFO_FAMILY, Bytes.toBytes(RS_COLUMN),</span> |
| <span class="source-line-no">113</span><span id="line-113"> Bytes.toBytes(payload.getRsName()))</span> |
| <span class="source-line-no">114</span><span id="line-114"> .addColumn(WAL_EVENT_TRACKER_INFO_FAMILY, Bytes.toBytes(WAL_NAME_COLUMN),</span> |
| <span class="source-line-no">115</span><span id="line-115"> Bytes.toBytes(payload.getWalName()))</span> |
| <span class="source-line-no">116</span><span id="line-116"> .addColumn(WAL_EVENT_TRACKER_INFO_FAMILY, Bytes.toBytes(TIMESTAMP_COLUMN),</span> |
| <span class="source-line-no">117</span><span id="line-117"> Bytes.toBytes(payload.getTimeStamp()))</span> |
| <span class="source-line-no">118</span><span id="line-118"> .addColumn(WAL_EVENT_TRACKER_INFO_FAMILY, Bytes.toBytes(WAL_STATE_COLUMN),</span> |
| <span class="source-line-no">119</span><span id="line-119"> Bytes.toBytes(payload.getState()))</span> |
| <span class="source-line-no">120</span><span id="line-120"> .addColumn(WAL_EVENT_TRACKER_INFO_FAMILY, Bytes.toBytes(WAL_LENGTH_COLUMN),</span> |
| <span class="source-line-no">121</span><span id="line-121"> Bytes.toBytes(payload.getWalLength()));</span> |
| <span class="source-line-no">122</span><span id="line-122"> puts.add(put);</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> doPut(connection, puts);</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> /**</span> |
| <span class="source-line-no">128</span><span id="line-128"> * Create rowKey: 1. We want RS name to be the leading part of rowkey so that we can query by RS</span> |
| <span class="source-line-no">129</span><span id="line-129"> * name filter. WAL name contains rs name as a leading part. 2. Timestamp when the event was</span> |
| <span class="source-line-no">130</span><span id="line-130"> * generated. 3. Add state of the wal. Combination of 1 + 2 + 3 is definitely going to create a</span> |
| <span class="source-line-no">131</span><span id="line-131"> * unique rowkey.</span> |
| <span class="source-line-no">132</span><span id="line-132"> * @param payload payload to process</span> |
| <span class="source-line-no">133</span><span id="line-133"> * @return rowKey byte[]</span> |
| <span class="source-line-no">134</span><span id="line-134"> */</span> |
| <span class="source-line-no">135</span><span id="line-135"> public static byte[] getRowKey(final WALEventTrackerPayload payload) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> String walName = payload.getWalName();</span> |
| <span class="source-line-no">137</span><span id="line-137"> // converting to string since this will help seeing the timestamp in string format using</span> |
| <span class="source-line-no">138</span><span id="line-138"> // hbase shell commands.</span> |
| <span class="source-line-no">139</span><span id="line-139"> String timestampStr = String.valueOf(payload.getTimeStamp());</span> |
| <span class="source-line-no">140</span><span id="line-140"> String walState = payload.getState();</span> |
| <span class="source-line-no">141</span><span id="line-141"> final String rowKeyStr = walName + DELIMITER + timestampStr + DELIMITER + walState;</span> |
| <span class="source-line-no">142</span><span id="line-142"> return Bytes.toBytes(rowKeyStr);</span> |
| <span class="source-line-no">143</span><span id="line-143"> }</span> |
| <span class="source-line-no">144</span><span id="line-144">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |