| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <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><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.regionserver;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.HashMap;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Iterator;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Map;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.ScheduledChore;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.Stoppable;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.slf4j.Logger;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.slf4j.LoggerFactory;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.master.cleaner.TimeToLiveHFileCleaner;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.util.StringUtils;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span>/**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * A chore for refreshing the store files for secondary regions hosted in the region server.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> *<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * This chore should run periodically with a shorter interval than HFile TTL<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * ("hbase.master.hfilecleaner.ttl", default 5 minutes).<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * It ensures that if we cannot refresh files longer than that amount, the region<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * will stop serving read requests because the referenced files might have been deleted (by the<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * primary region).<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>@InterfaceAudience.Private<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>public class StorefileRefresherChore extends ScheduledChore {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private static final Logger LOG = LoggerFactory.getLogger(StorefileRefresherChore.class);<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * The period (in milliseconds) for refreshing the store files for the secondary regions.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public static final String REGIONSERVER_STOREFILE_REFRESH_PERIOD<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> = "hbase.regionserver.storefile.refresh.period";<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> static final int DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD = 0; //disabled by default<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /**<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * Whether all storefiles should be refreshed, as opposed to just hbase:meta's<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * Meta region doesn't have WAL replication for replicas enabled yet<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> public static final String REGIONSERVER_META_STOREFILE_REFRESH_PERIOD<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> = "hbase.regionserver.meta.storefile.refresh.period";<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private HRegionServer regionServer;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private long hfileTtl;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private int period;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private boolean onlyMetaRefresh = true;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> //ts of last time regions store files are refreshed<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> private Map<String, Long> lastRefreshTimes; // encodedName -> long<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> public StorefileRefresherChore(int period, boolean onlyMetaRefresh, HRegionServer regionServer,<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> Stoppable stoppable) {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> super("StorefileRefresherChore", stoppable, period);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> this.period = period;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> this.regionServer = regionServer;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> this.hfileTtl = this.regionServer.getConfiguration().getLong(<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> TimeToLiveHFileCleaner.TTL_CONF_KEY, TimeToLiveHFileCleaner.DEFAULT_TTL);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> this.onlyMetaRefresh = onlyMetaRefresh;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> if (period > hfileTtl / 2) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> throw new RuntimeException(REGIONSERVER_STOREFILE_REFRESH_PERIOD +<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> " should be set smaller than half of " + TimeToLiveHFileCleaner.TTL_CONF_KEY);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> lastRefreshTimes = new HashMap<>();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @Override<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> protected void chore() {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> for (Region r : regionServer.getOnlineRegionsLocalContext()) {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> if (!r.isReadOnly()) {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> // skip checking for this region if it can accept writes<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> continue;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> // don't refresh unless enabled for all files, or it the meta region<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // meta region don't have WAL replication for replicas enabled yet<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> if (onlyMetaRefresh && !r.getRegionInfo().isMetaRegion()) continue;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> String encodedName = r.getRegionInfo().getEncodedName();<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> long time = EnvironmentEdgeManager.currentTime();<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> if (!lastRefreshTimes.containsKey(encodedName)) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> lastRefreshTimes.put(encodedName, time);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> try {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> for (Store store : r.getStores()) {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> // TODO: some stores might see new data from flush, while others do not which<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> // MIGHT break atomic edits across column families. We can fix this with setting<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> // mvcc read numbers that we know every store has seen<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> store.refreshStoreFiles();<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> } catch (IOException ex) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> LOG.warn("Exception while trying to refresh store files for region:" + r.getRegionInfo()<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> + ", exception:" + StringUtils.stringifyException(ex));<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> // Store files have a TTL in the archive directory. If we fail to refresh for that long, we stop serving reads<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (isRegionStale(encodedName, time)) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> ((HRegion)r).setReadsEnabled(false); // stop serving reads<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> continue;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> lastRefreshTimes.put(encodedName, time);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> ((HRegion)r).setReadsEnabled(true); // restart serving reads<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> // remove closed regions<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> Iterator<String> lastRefreshTimesIter = lastRefreshTimes.keySet().iterator();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> while (lastRefreshTimesIter.hasNext()) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> String encodedName = lastRefreshTimesIter.next();<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (regionServer.getRegion(encodedName) == null) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> lastRefreshTimesIter.remove();<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> protected boolean isRegionStale(String encodedName, long time) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> long lastRefreshTime = lastRefreshTimes.get(encodedName);<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> return time - lastRefreshTime > hfileTtl - period;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span>}<a name="line.135"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
