You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/09/27 14:52:23 UTC
[06/11] hbase-site git commit: Published site at
86cb8e48ad8aecf52bca1169a98607c76198c70b.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1484df9a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html
index a72f1af..f1a6dfa 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html
@@ -42,1114 +42,1109 @@
<span class="sourceLineNo">034</span>import java.util.Map;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import java.util.OptionalLong;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import java.util.Set;<a name="line.36"></a>
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-<span class="sourceLineNo">038</span>import java.util.concurrent.ConcurrentMap;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import java.util.concurrent.ConcurrentNavigableMap;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import java.util.concurrent.CopyOnWriteArrayList;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import java.util.concurrent.ExecutionException;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import java.util.concurrent.TimeUnit;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.commons.lang3.mutable.MutableLong;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.conf.Configuration;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.fs.FileStatus;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.fs.FileSystem;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.fs.Path;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.fs.PathFilter;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.Cell;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.HConstants;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.exceptions.TimeoutIOException;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.io.util.MemorySizeUtil;<a name="line.60"></a>
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-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.util.CollectionUtils;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.66"></a>
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-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.70"></a>
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-<span class="sourceLineNo">087</span>/**<a name="line.87"></a>
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-<span class="sourceLineNo">089</span> * WAL is ever being written at a time. When a WAL hits a configured maximum size, it is rolled.<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * This is done internal to the implementation.<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * <p><a name="line.91"></a>
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-<span class="sourceLineNo">098</span> * <code>F</code> when all of the edits in <code>F</code> have a log-sequence-id that's older<a name="line.98"></a>
-<span class="sourceLineNo">099</span> * (smaller) than the most-recent flush.<a name="line.99"></a>
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-<span class="sourceLineNo">102</span> * {@link WALFactory#createReader(org.apache.hadoop.fs.FileSystem, org.apache.hadoop.fs.Path)}. *<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * <h2>Failure Semantic</h2> If an exception on append or sync, roll the WAL because the current WAL<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * is now a lame duck; any more appends or syncs will fail also with the same original exception. If<a name="line.104"></a>
-<span class="sourceLineNo">105</span> * we have made successful appends to the WAL and we then are unable to sync them, our current<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * semantic is to return error to the client that the appends failed but also to abort the current<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * context, usually the hosting server. We need to replay the WALs. <br><a name="line.107"></a>
-<span class="sourceLineNo">108</span> * TODO: Change this semantic. A roll of WAL may be sufficient as long as we have flagged client<a name="line.108"></a>
-<span class="sourceLineNo">109</span> * that the append failed. <br><a name="line.109"></a>
-<span class="sourceLineNo">110</span> * TODO: replication may pick up these last edits though they have been marked as failed append<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * (Need to keep our own file lengths, not rely on HDFS).<a name="line.111"></a>
-<span class="sourceLineNo">112</span> */<a name="line.112"></a>
-<span class="sourceLineNo">113</span>@InterfaceAudience.Private<a name="line.113"></a>
-<span class="sourceLineNo">114</span>public abstract class AbstractFSWAL<W extends WriterBase> implements WAL {<a name="line.114"></a>
-<span class="sourceLineNo">115</span><a name="line.115"></a>
-<span class="sourceLineNo">116</span> private static final Logger LOG = LoggerFactory.getLogger(AbstractFSWAL.class);<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> protected static final int DEFAULT_SLOW_SYNC_TIME_MS = 100; // in ms<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span> private static final int DEFAULT_WAL_SYNC_TIMEOUT_MS = 5 * 60 * 1000; // in ms, 5min<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span> /**<a name="line.122"></a>
-<span class="sourceLineNo">123</span> * file system instance<a name="line.123"></a>
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-<span class="sourceLineNo">125</span> protected final FileSystem fs;<a name="line.125"></a>
-<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span> /**<a name="line.127"></a>
-<span class="sourceLineNo">128</span> * WAL directory, where all WAL files would be placed.<a name="line.128"></a>
-<span class="sourceLineNo">129</span> */<a name="line.129"></a>
-<span class="sourceLineNo">130</span> protected final Path walDir;<a name="line.130"></a>
-<span class="sourceLineNo">131</span><a name="line.131"></a>
-<span class="sourceLineNo">132</span> /**<a name="line.132"></a>
-<span class="sourceLineNo">133</span> * dir path where old logs are kept.<a name="line.133"></a>
-<span class="sourceLineNo">134</span> */<a name="line.134"></a>
-<span class="sourceLineNo">135</span> protected final Path walArchiveDir;<a name="line.135"></a>
-<span class="sourceLineNo">136</span><a name="line.136"></a>
-<span class="sourceLineNo">137</span> /**<a name="line.137"></a>
-<span class="sourceLineNo">138</span> * Matches just those wal files that belong to this wal instance.<a name="line.138"></a>
-<span class="sourceLineNo">139</span> */<a name="line.139"></a>
-<span class="sourceLineNo">140</span> protected final PathFilter ourFiles;<a name="line.140"></a>
-<span class="sourceLineNo">141</span><a name="line.141"></a>
-<span class="sourceLineNo">142</span> /**<a name="line.142"></a>
-<span class="sourceLineNo">143</span> * Prefix of a WAL file, usually the region server name it is hosted on.<a name="line.143"></a>
-<span class="sourceLineNo">144</span> */<a name="line.144"></a>
-<span class="sourceLineNo">145</span> protected final String walFilePrefix;<a name="line.145"></a>
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-<span class="sourceLineNo">147</span> /**<a name="line.147"></a>
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-<span class="sourceLineNo">150</span> protected final String walFileSuffix;<a name="line.150"></a>
-<span class="sourceLineNo">151</span><a name="line.151"></a>
-<span class="sourceLineNo">152</span> /**<a name="line.152"></a>
-<span class="sourceLineNo">153</span> * Prefix used when checking for wal membership.<a name="line.153"></a>
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-<span class="sourceLineNo">155</span> protected final String prefixPathStr;<a name="line.155"></a>
-<span class="sourceLineNo">156</span><a name="line.156"></a>
-<span class="sourceLineNo">157</span> protected final WALCoprocessorHost coprocessorHost;<a name="line.157"></a>
-<span class="sourceLineNo">158</span><a name="line.158"></a>
-<span class="sourceLineNo">159</span> /**<a name="line.159"></a>
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-<span class="sourceLineNo">162</span> protected final Configuration conf;<a name="line.162"></a>
+<span class="sourceLineNo">037</span>import java.util.concurrent.ConcurrentNavigableMap;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import java.util.concurrent.CopyOnWriteArrayList;<a name="line.39"></a>
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+<span class="sourceLineNo">041</span>import java.util.concurrent.TimeUnit;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.commons.lang3.mutable.MutableLong;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.conf.Configuration;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.fs.FileStatus;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.fs.FileSystem;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.fs.Path;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.fs.PathFilter;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.Cell;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.HConstants;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.56"></a>
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+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.io.util.MemorySizeUtil;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.log.HBaseMarkers;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.65"></a>
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+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.wal.WALFactory;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.wal.WALKeyImpl;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.wal.WALPrettyPrinter;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.wal.WALProvider.WriterBase;<a name="line.73"></a>
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+<span class="sourceLineNo">086</span> * WAL is ever being written at a time. When a WAL hits a configured maximum size, it is rolled.<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * This is done internal to the implementation.<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * <p><a name="line.88"></a>
+<span class="sourceLineNo">089</span> * As data is flushed from the MemStore to other on-disk structures (files sorted by key, hfiles), a<a name="line.89"></a>
+<span class="sourceLineNo">090</span> * WAL becomes obsolete. We can let go of all the log edits/entries for a given HRegion-sequence id.<a name="line.90"></a>
+<span class="sourceLineNo">091</span> * A bunch of work in the below is done keeping account of these region sequence ids -- what is<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * flushed out to hfiles, and what is yet in WAL and in memory only.<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * <p><a name="line.93"></a>
+<span class="sourceLineNo">094</span> * It is only practical to delete entire files. Thus, we delete an entire on-disk file<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * <code>F</code> when all of the edits in <code>F</code> have a log-sequence-id that's older<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * (smaller) than the most-recent flush.<a name="line.96"></a>
+<span class="sourceLineNo">097</span> * <p><a name="line.97"></a>
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+<span class="sourceLineNo">100</span> * <h2>Failure Semantic</h2> If an exception on append or sync, roll the WAL because the current WAL<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * is now a lame duck; any more appends or syncs will fail also with the same original exception. If<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * we have made successful appends to the WAL and we then are unable to sync them, our current<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * semantic is to return error to the client that the appends failed but also to abort the current<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * context, usually the hosting server. We need to replay the WALs. <br><a name="line.104"></a>
+<span class="sourceLineNo">105</span> * TODO: Change this semantic. A roll of WAL may be sufficient as long as we have flagged client<a name="line.105"></a>
+<span class="sourceLineNo">106</span> * that the append failed. <br><a name="line.106"></a>
+<span class="sourceLineNo">107</span> * TODO: replication may pick up these last edits though they have been marked as failed append<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * (Need to keep our own file lengths, not rely on HDFS).<a name="line.108"></a>
+<span class="sourceLineNo">109</span> */<a name="line.109"></a>
+<span class="sourceLineNo">110</span>@InterfaceAudience.Private<a name="line.110"></a>
+<span class="sourceLineNo">111</span>public abstract class AbstractFSWAL<W extends WriterBase> implements WAL {<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span> private static final Logger LOG = LoggerFactory.getLogger(AbstractFSWAL.class);<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
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+<span class="sourceLineNo">116</span><a name="line.116"></a>
+<span class="sourceLineNo">117</span> private static final int DEFAULT_WAL_SYNC_TIMEOUT_MS = 5 * 60 * 1000; // in ms, 5min<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span> /**<a name="line.119"></a>
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-<span class="sourceLineNo">312</span> Pair<Long, MemoryType> globalMemstoreSize = MemorySizeUtil.getGlobalMemStoreSize(conf);<a name="line.312"></a>
-<span class="sourceLineNo">313</span> return (int) ((globalMemstoreSize.getFirst() * 2) / logRollSize);<a name="line.313"></a>
-<span class="sourceLineNo">314</span> }<a name="line.314"></a>
-<span class="sourceLineNo">315</span><a name="line.315"></a>
-<span class="sourceLineNo">316</span> // must be power of 2<a name="line.316"></a>
-<span class="sourceLineNo">317</span> protected final int getPreallocatedEventCount() {<a name="line.317"></a>
-<span class="sourceLineNo">318</span> // Preallocate objects to use on the ring buffer. The way that appends and syncs work, we will<a name="line.318"></a>
-<span class="sourceLineNo">319</span> // be stuck and make no progress if the buffer is filled with appends only and there is no<a name="line.319"></a>
-<span class="sourceLineNo">320</span> // sync. If no sync, then the handlers will be outstanding just waiting on sync completion<a name="line.320"></a>
-<span class="sourceLineNo">321</span> // before they return.<a name="line.321"></a>
-<span class="sourceLineNo">322</span> int preallocatedEventCount =<a name="line.322"></a>
-<span class="sourceLineNo">323</span> this.conf.getInt("hbase.regionserver.wal.disruptor.event.count", 1024 * 16);<a name="line.323"></a>
-<span class="sourceLineNo">324</span> checkArgument(preallocatedEventCount >= 0,<a name="line.324"></a>
-<span class="sourceLineNo">325</span> "hbase.regionserver.wal.disruptor.event.count must > 0");<a name="line.325"></a>
-<span class="sourceLineNo">326</span> int floor = Integer.highestOneBit(preallocatedEventCount);<a name="line.326"></a>
-<span class="sourceLineNo">327</span> if (floor == preallocatedEventCount) {<a name="line.327"></a>
-<span class="sourceLineNo">328</span> return floor;<a name="line.328"></a>
-<span class="sourceLineNo">329</span> }<a name="line.329"></a>
-<span class="sourceLineNo">330</span> // max capacity is 1 << 30<a name="line.330"></a>
-<span class="sourceLineNo">331</span> if (floor >= 1 << 29) {<a name="line.331"></a>
-<span class="sourceLineNo">332</span> return 1 << 30;<a name="line.332"></a>
-<span class="sourceLineNo">333</span> }<a name="line.333"></a>
-<span class="sourceLineNo">334</span> return floor << 1;<a name="line.334"></a>
-<span class="sourceLineNo">335</span> }<a name="line.335"></a>
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-<span class="sourceLineNo">337</span> protected AbstractFSWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.337"></a>
-<span class="sourceLineNo">338</span> final String archiveDir, final Configuration conf, final List<WALActionsListener> listeners,<a name="line.338"></a>
-<span class="sourceLineNo">339</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.339"></a>
-<span class="sourceLineNo">340</span> throws FailedLogCloseException, IOException {<a name="line.340"></a>
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-<span class="sourceLineNo">343</span> this.walArchiveDir = new Path(rootDir, archiveDir);<a name="line.343"></a>
-<span class="sourceLineNo">344</span> this.conf = conf;<a name="line.344"></a>
-<span class="sourceLineNo">345</span><a name="line.345"></a>
-<span class="sourceLineNo">346</span> if (!fs.exists(walDir) && !fs.mkdirs(walDir)) {<a name="line.346"></a>
-<span class="sourceLineNo">347</span> throw new IOException("Unable to mkdir " + walDir);<a name="line.347"></a>
+<span class="sourceLineNo">230</span> protected volatile boolean closed = false;<a name="line.230"></a>
+<span class="sourceLineNo">231</span><a name="line.231"></a>
+<span class="sourceLineNo">232</span> protected final AtomicBoolean shutdown = new AtomicBoolean(false);<a name="line.232"></a>
+<span class="sourceLineNo">233</span> /**<a name="line.233"></a>
+<span class="sourceLineNo">234</span> * WAL Comparator; it compares the timestamp (log filenum), present in the log file name. Throws<a name="line.234"></a>
+<span class="sourceLineNo">235</span> * an IllegalArgumentException if used to compare paths from different wals.<a name="line.235"></a>
+<span class="sourceLineNo">236</span> */<a name="line.236"></a>
+<span class="sourceLineNo">237</span> final Comparator<Path> LOG_NAME_COMPARATOR =<a name="line.237"></a>
+<span class="sourceLineNo">238</span> (o1, o2) -> Long.compare(getFileNumFromFileName(o1), getFileNumFromFileName(o2));<a name="line.238"></a>
+<span class="sourceLineNo">239</span><a name="line.239"></a>
+<span class="sourceLineNo">240</span> private static final class WalProps {<a name="line.240"></a>
+<span class="sourceLineNo">241</span><a name="line.241"></a>
+<span class="sourceLineNo">242</span> /**<a name="line.242"></a>
+<span class="sourceLineNo">243</span> * Map the encoded region name to the highest sequence id. Contain all the regions it has<a name="line.243"></a>
+<span class="sourceLineNo">244</span> * entries of<a name="line.244"></a>
+<span class="sourceLineNo">245</span> */<a name="line.245"></a>
+<span class="sourceLineNo">246</span> public final Map<byte[], Long> encodedName2HighestSequenceId;<a name="line.246"></a>
+<span class="sourceLineNo">247</span><a name="line.247"></a>
+<span class="sourceLineNo">248</span> /**<a name="line.248"></a>
+<span class="sourceLineNo">249</span> * The log file size. Notice that the size may not be accurate if we do asynchronous close in<a name="line.249"></a>
+<span class="sourceLineNo">250</span> * sub classes.<a name="line.250"></a>
+<span class="sourceLineNo">251</span> */<a name="line.251"></a>
+<span class="sourceLineNo">252</span> public final long logSize;<a name="line.252"></a>
+<span class="sourceLineNo">253</span><a name="line.253"></a>
+<span class="sourceLineNo">254</span> public WalProps(Map<byte[], Long> encodedName2HighestSequenceId, long logSize) {<a name="line.254"></a>
+<span class="sourceLineNo">255</span> this.encodedName2HighestSequenceId = encodedName2HighestSequenceId;<a name="line.255"></a>
+<span class="sourceLineNo">256</span> this.logSize = logSize;<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span><a name="line.259"></a>
+<span class="sourceLineNo">260</span> /**<a name="line.260"></a>
+<span class="sourceLineNo">261</span> * Map of WAL log file to properties. The map is sorted by the log file creation timestamp<a name="line.261"></a>
+<span class="sourceLineNo">262</span> * (contained in the log file name).<a name="line.262"></a>
+<span class="sourceLineNo">263</span> */<a name="line.263"></a>
+<span class="sourceLineNo">264</span> protected ConcurrentNavigableMap<Path, WalProps> walFile2Props =<a name="line.264"></a>
+<span class="sourceLineNo">265</span> new ConcurrentSkipListMap<>(LOG_NAME_COMPARATOR);<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span> /**<a name="line.267"></a>
+<span class="sourceLineNo">268</span> * Map of {@link SyncFuture}s owned by Thread objects. Used so we reuse SyncFutures.<a name="line.268"></a>
+<span class="sourceLineNo">269</span> * Thread local is used so JVM can GC the terminated thread for us. See HBASE-21228<a name="line.269"></a>
+<span class="sourceLineNo">270</span> * <p><a name="line.270"></a>
+<span class="sourceLineNo">271</span> */<a name="line.271"></a>
+<span class="sourceLineNo">272</span> private final ThreadLocal<SyncFuture> cachedSyncFutures;<a name="line.272"></a>
+<span class="sourceLineNo">273</span><a name="line.273"></a>
+<span class="sourceLineNo">274</span> /**<a name="line.274"></a>
+<span class="sourceLineNo">275</span> * The class name of the runtime implementation, used as prefix for logging/tracing.<a name="line.275"></a>
+<span class="sourceLineNo">276</span> * <p><a name="line.276"></a>
+<span class="sourceLineNo">277</span> * Performance testing shows getClass().getSimpleName() might be a bottleneck so we store it here,<a name="line.277"></a>
+<span class="sourceLineNo">278</span> * refer to HBASE-17676 for more details<a name="line.278"></a>
+<span class="sourceLineNo">279</span> * </p><a name="line.279"></a>
+<span class="sourceLineNo">280</span> */<a name="line.280"></a>
+<span class="sourceLineNo">281</span> protected final String implClassName;<a name="line.281"></a>
+<span class="sourceLineNo">282</span><a name="line.282"></a>
+<span class="sourceLineNo">283</span> public long getFilenum() {<a name="line.283"></a>
+<span class="sourceLineNo">284</span> return this.filenum.get();<a name="line.284"></a>
+<span class="sourceLineNo">285</span> }<a name="line.285"></a>
+<span class="sourceLineNo">286</span><a name="line.286"></a>
+<span class="sourceLineNo">287</span> /**<a name="line.287"></a>
+<span class="sourceLineNo">288</span> * A log file has a creation timestamp (in ms) in its file name ({@link #filenum}. This helper<a name="line.288"></a>
+<span class="sourceLineNo">289</span> * method returns the creation timestamp from a given log file. It extracts the timestamp assuming<a name="line.289"></a>
+<span class="sourceLineNo">290</span> * the filename is created with the {@link #computeFilename(long filenum)} method.<a name="line.290"></a>
+<span class="sourceLineNo">291</span> * @return timestamp, as in the log file name.<a name="line.291"></a>
+<span class="sourceLineNo">292</span> */<a name="line.292"></a>
+<span class="sourceLineNo">293</span> protected long getFileNumFromFileName(Path fileName) {<a name="line.293"></a>
+<span class="sourceLineNo">294</span> checkNotNull(fileName, "file name can't be null");<a name="line.294"></a>
+<span class="sourceLineNo">295</span> if (!ourFiles.accept(fileName)) {<a name="line.295"></a>
+<span class="sourceLineNo">296</span> throw new IllegalArgumentException(<a name="line.296"></a>
+<span class="sourceLineNo">297</span> "The log file " + fileName + " doesn't belong to this WAL. (" + toString() + ")");<a name="line.297"></a>
+<span class="sourceLineNo">298</span> }<a name="line.298"></a>
+<span class="sourceLineNo">299</span> final String fileNameString = fileName.toString();<a name="line.299"></a>
+<span class="sourceLineNo">300</span> String chompedPath = fileNameString.substring(prefixPathStr.length(),<a name="line.300"></a>
+<span class="sourceLineNo">301</span> (fileNameString.length() - walFileSuffix.length()));<a name="line.301"></a>
+<span class="sourceLineNo">302</span> return Long.parseLong(chompedPath);<a name="line.302"></a>
+<span class="sourceLineNo">303</span> }<a name="line.303"></a>
+<span class="sourceLineNo">304</span><a name="line.304"></a>
+<span class="sourceLineNo">305</span> private int calculateMaxLogFiles(Configuration conf, long logRollSize) {<a name="line.305"></a>
+<span class="sourceLineNo">306</span> Pair<Long, MemoryType> globalMemstoreSize = MemorySizeUtil.getGlobalMemStoreSize(conf);<a name="line.306"></a>
+<span class="sourceLineNo">307</span> return (int) ((globalMemstoreSize.getFirst() * 2) / logRollSize);<a name="line.307"></a>
+<span class="sourceLineNo">308</span> }<a name="line.308"></a>
+<span class="sourceLineNo">309</span><a name="line.309"></a>
+<span class="sourceLineNo">310</span> // must be power of 2<a name="line.310"></a>
+<span class="sourceLineNo">311</span> protected final int getPreallocatedEventCount() {<a name="line.311"></a>
+<span class="sourceLineNo">312</span> // Preallocate objects to use on the ring buffer. The way that appends and syncs work, we will<a name="line.312"></a>
+<span class="sourceLineNo">313</span> // be stuck and make no progress if the buffer is filled with appends only and there is no<a name="line.313"></a>
+<span class="sourceLineNo">314</span> // sync. If no sync, then the handlers will be outstanding just waiting on sync completion<a name="line.314"></a>
+<span class="sourceLineNo">315</span> // before they return.<a name="line.315"></a>
+<span class="sourceLineNo">316</span> int preallocatedEventCount =<a name="line.316"></a>
+<span class="sourceLineNo">317</span> this.conf.getInt("hbase.regionserver.wal.disruptor.event.count", 1024 * 16);<a name="line.317"></a>
+<span class="sourceLineNo">318</span> checkArgument(preallocatedEventCount >= 0,<a name="line.318"></a>
+<span class="sourceLineNo">319</span> "hbase.regionserver.wal.disruptor.event.count must > 0");<a name="line.319"></a>
+<span class="sourceLineNo">320</span> int floor = Integer.highestOneBit(preallocatedEventCount);<a name="line.320"></a>
+<span class="sourceLineNo">321</span> if (floor == preallocatedEventCount) {<a name="line.321"></a>
+<span class="sourceLineNo">322</span> return floor;<a name="line.322"></a>
+<span class="sourceLineNo">323</span> }<a name="line.323"></a>
+<span class="sourceLineNo">324</span> // max capacity is 1 << 30<a name="line.324"></a>
+<span class="sourceLineNo">325</span> if (floor >= 1 << 29) {<a name="line.325"></a>
+<span class="sourceLineNo">326</span> return 1 << 30;<a name="line.326"></a>
+<span class="sourceLineNo">327</span> }<a name="line.327"></a>
+<span class="sourceLineNo">328</span> return floor << 1;<a name="line.328"></a>
+<span class="sourceLineNo">329</span> }<a name="line.329"></a>
+<span class="sourceLineNo">330</span><a name="line.330"></a>
+<span class="sourceLineNo">331</span> protected AbstractFSWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.331"></a>
+<span class="sourceLineNo">332</span> final String archiveDir, final Configuration conf, final List<WALActionsListener> listeners,<a name="line.332"></a>
+<span class="sourceLineNo">333</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.333"></a>
+<span class="sourceLineNo">334</span> throws FailedLogCloseException, IOException {<a name="line.334"></a>
+<span class="sourceLineNo">335</span> this.fs = fs;<a name="line.335"></a>
+<span class="sourceLineNo">336</span> this.walDir = new Path(rootDir, logDir);<a name="line.336"></a>
+<span class="sourceLineNo">337</span> this.walArchiveDir = new Path(rootDir, archiveDir);<a name="line.337"></a>
+<span class="sourceLineNo">338</span> this.conf = conf;<a name="line.338"></a>
+<span class="sourceLineNo">339</span><a name="line.339"></a>
+<span class="sourceLineNo">340</span> if (!fs.exists(walDir) && !fs.mkdirs(walDir)) {<a name="line.340"></a>
+<span class="sourceLineNo">341</span> throw new IOException("Unable to mkdir " + walDir);<a name="line.341"></a>
+<span class="sourceLineNo">342</span> }<a name="line.342"></a>
+<span class="sourceLineNo">343</span><a name="line.343"></a>
+<span class="sourceLineNo">344</span> if (!fs.exists(this.walArchiveDir)) {<a name="line.344"></a>
+<span class="sourceLineNo">345</span> if (!fs.mkdirs(this.walArchiveDir)) {<a name="line.345"></a>
+<span class="sourceLineNo">346</span> throw new IOException("Unable to mkdir " + this.walArchiveDir);<a name="line.346"></a>
+<span class="sourceLineNo">347</span> }<a name="line.347"></a>
<span class="sourceLineNo">348</span> }<a name="line.348"></a>
<span class="sourceLineNo">349</span><a name="line.349"></a>
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-<span class="sourceLineNo">351</span> if (!fs.mkdirs(this.walArchiveDir)) {<a name="line.351"></a>
-<span class="sourceLineNo">352</span> throw new IOException("Unable to mkdir " + this.walArchiveDir);<a name="line.352"></a>
-<span class="sourceLineNo">353</span> }<a name="line.353"></a>
-<span class="sourceLineNo">354</span> }<a name="line.354"></a>
-<span class="sourceLineNo">355</span><a name="line.355"></a>
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-<span class="sourceLineNo">357</span> this.walFilePrefix =<a name="line.357"></a>
-<span class="sourceLineNo">358</span> prefix == null || prefix.isEmpty() ? "wal" : URLEncoder.encode(prefix, "UTF8");<a name="line.358"></a>
-<span class="sourceLineNo">359</span> // we only correctly differentiate suffices when numeric ones start with '.'<a name="line.359"></a>
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-<span class="sourceLineNo">361</span> throw new IllegalArgumentException("WAL suffix must start with '" + WAL_FILE_NAME_DELIMITER +<a name="line.361"></a>
-<span class="sourceLineNo">362</span> "' but instead was '" + suffix + "'");<a name="line.362"></a>
-<span class="sourceLineNo">363</span> }<a name="line.363"></a>
-<span class="sourceLineNo">364</span> // Now that it exists, set the storage policy for the entire directory of wal files related to<a name="line.364"></a>
-<span class="sourceLineNo">365</span> // this FSHLog instance<a name="line.365"></a>
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-<span class="sourceLineNo">368</span> CommonFSUtils.setStoragePolicy(fs, this.walDir, storagePolicy);<a name="line.368"></a>
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-<span class="sourceLineNo">372</span> this.ourFiles = new PathFilter() {<a name="line.372"></a>
-<span class="sourceLineNo">373</span> @Override<a name="line.373"></a>
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-<span class="sourceLineNo">376</span> final String fileNameString = fileName.toString();<a name="line.376"></a>
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-<span class="sourceLineNo">378</span> return false;<a name="line.378"></a>
-<span class="sourceLineNo">379</span> }<a name="line.379"></a>
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-<span class="sourceLineNo">383</span> .isNumeric(fileNameString.substring(prefixPathStr.length()));<a name="line.383"></a>
-<span class="sourceLineNo">384</span> } else if (!fileNameString.endsWith(walFileSuffix)) {<a name="line.384"></a>
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-<span class="sourceLineNo">387</span> return true;<a name="line.387"></a>
-<span class="sourceLineNo">388</span> }<a name="line.388"></a>
-<span class="sourceLineNo">389</span> };<a name="line.389"></a>
-<span class="sourceLineNo">390</span><a name="line.390"></a>
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-<span class="sourceLineNo">393</span> if (null != walFiles && 0 != walFiles.length) {<a name="line.393"></a>
-<span class="sourceLineNo">394</span> throw new IOException("Target WAL already exists within directory " + walDir);<a name="line.394"></a>
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-<span class="sourceLineNo">397</span><a name="line.397"></a>
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-<span class="sourceLineNo">399</span> if (listeners != null) {<a name="line.399"></a>
-<span class="sourceLineNo">400</span> for (WALActionsListener i : listeners) {<a name="line.400"></a>
-<span class="sourceLineNo">401</span> registerWALActionsListener(i);<a name="line.401"></a>
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-<span class="sourceLineNo">405</span><a name="line.405"></a>
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-<span class="sourceLineNo">407</span> // size should make it so WAL rolls before we get to the end-of-block (Block transitions cost<a name="line.407"></a>
-<span class="sourceLineNo">408</span> // some latency). In hbase-1 we did this differently. We scheduled a roll when we hit 95% of<a name="line.408"></a>
-<span class="sourceLineNo">409</span> // the block size but experience from the field has it that this was not enough time for the<a name="line.409"></a>
-<span class="sourceLineNo">410</span> // roll to happen before end-of-block. So the new accounting makes WALs of about the same<a name="line.410"></a>
-<span class="sourceLineNo">411</span> // size as those made in hbase-1 (to prevent surprise), we now have default block size as<a name="line.411"></a>
-<span class="sourceLineNo">412</span> // 2 times the DFS default: i.e. 2 * DFS default block size rolling at 50% full will generally<a name="line.412"></a>
-<span class="sourceLineNo">413</span> // make similar size logs to 1 * DFS default block size rolling at 95% full. See HBASE-19148.<a name="line.413"></a>
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-<span class="sourceLineNo">415</span> float multiplier = conf.getFloat("hbase.regionserver.logroll.multiplier", 0.5f);<a name="line.415"></a>
-<span class="sourceLineNo">416</span> this.logrollsize = (long)(this.blocksize * multiplier);<a name="line.416"></a>
-<span class="sourceLineNo">417</span><a name="line.417"></a>
-<span class="sourceLineNo">418</span> boolean maxLogsDefined = conf.get("hbase.regionserver.maxlogs") != null;<a name="line.418"></a>
-<span class="sourceLineNo">419</span> if (maxLogsDefined) {<a name="line.419"></a>
-<span class="sourceLineNo">420</span> LOG.warn("'hbase.regionserver.maxlogs' was deprecated.");<a name="line.420"></a>
-<span class="sourceLineNo">421</span> }<a name="line.421"></a>
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+<span class="sourceLineNo">356</span> "' but instead was '" + suffix + "'");<a name="line.356"></a>
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+<span class="sourceLineNo">365</span><a name="line.365"></a>
+<span class="sourceLineNo">366</span> this.ourFiles = new PathFilter() {<a name="line.366"></a>
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+<span class="sourceLineNo">368</span> public boolean accept(final Path fileName) {<a name="line.368"></a>
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+<span class="sourceLineNo">370</span> final String fileNameString = fileName.toString();<a name="line.370"></a>
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+<span class="s
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