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 2018/02/07 15:14:18 UTC
[24/42] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/6bdadd97/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html
index ee58411..948db0b 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html
@@ -25,1134 +25,1115 @@
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.regionserver.wal;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
-<span class="sourceLineNo">020</span>import static org.apache.hbase.thirdparty.com.google.common.base.Preconditions.checkArgument;<a name="line.20"></a>
-<span class="sourceLineNo">021</span>import static org.apache.hbase.thirdparty.com.google.common.base.Preconditions.checkNotNull;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.WAL_FILE_NAME_DELIMITER;<a name="line.22"></a>
+<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.WAL_FILE_NAME_DELIMITER;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import static org.apache.hbase.thirdparty.com.google.common.base.Preconditions.checkArgument;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import static org.apache.hbase.thirdparty.com.google.common.base.Preconditions.checkNotNull;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import com.lmax.disruptor.RingBuffer;<a name="line.24"></a>
-<span class="sourceLineNo">025</span><a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.io.FileNotFoundException;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.io.IOException;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.io.InterruptedIOException;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.lang.management.MemoryType;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.net.URLEncoder;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.ArrayList;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.Arrays;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.Comparator;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.List;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.util.Map;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.util.OptionalLong;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.util.Set;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import java.util.concurrent.ConcurrentMap;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import java.util.concurrent.ConcurrentNavigableMap;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import java.util.concurrent.CopyOnWriteArrayList;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import java.util.concurrent.ExecutionException;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import java.util.concurrent.TimeUnit;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.48"></a>
-<span class="sourceLineNo">049</span><a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.commons.lang3.mutable.MutableLong;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.conf.Configuration;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.fs.FileStatus;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.fs.FileSystem;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.fs.Path;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.fs.PathFilter;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.Cell;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.HConstants;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.exceptions.TimeoutIOException;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.io.util.MemorySizeUtil;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.log.HBaseMarkers;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.util.CollectionUtils;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.util.DrainBarrier;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.wal.WALFactory;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.wal.WALKeyImpl;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.wal.WALPrettyPrinter;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.wal.WALProvider.WriterBase;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a name="line.81"></a>
-<span class="sourceLineNo">082</span>import org.apache.hadoop.util.StringUtils;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>import org.apache.htrace.core.TraceScope;<a name="line.83"></a>
-<span class="sourceLineNo">084</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.84"></a>
-<span class="sourceLineNo">085</span>import org.slf4j.Logger;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>import org.slf4j.LoggerFactory;<a name="line.86"></a>
-<span class="sourceLineNo">087</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.87"></a>
-<span class="sourceLineNo">088</span><a name="line.88"></a>
-<span class="sourceLineNo">089</span>/**<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * Implementation of {@link WAL} to go against {@link FileSystem}; i.e. keep WALs in HDFS. Only one<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * WAL is ever being written at a time. When a WAL hits a configured maximum size, it is rolled.<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * This is done internal to the implementation.<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * <p><a name="line.93"></a>
-<span class="sourceLineNo">094</span> * As data is flushed from the MemStore to other on-disk structures (files sorted by key, hfiles), a<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * WAL becomes obsolete. We can let go of all the log edits/entries for a given HRegion-sequence id.<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * A bunch of work in the below is done keeping account of these region sequence ids -- what is<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * flushed out to hfiles, and what is yet in WAL and in memory only.<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * <p><a name="line.98"></a>
-<span class="sourceLineNo">099</span> * It is only practical to delete entire files. Thus, we delete an entire on-disk file<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * <code>F</code> when all of the edits in <code>F</code> have a log-sequence-id that's older<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * (smaller) than the most-recent flush.<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * <p><a name="line.102"></a>
-<span class="sourceLineNo">103</span> * To read an WAL, call<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * {@link WALFactory#createReader(org.apache.hadoop.fs.FileSystem, org.apache.hadoop.fs.Path)}. *<a name="line.104"></a>
-<span class="sourceLineNo">105</span> * <h2>Failure Semantic</h2> If an exception on append or sync, roll the WAL because the current WAL<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * is now a lame duck; any more appends or syncs will fail also with the same original exception. If<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * we have made successful appends to the WAL and we then are unable to sync them, our current<a name="line.107"></a>
-<span class="sourceLineNo">108</span> * semantic is to return error to the client that the appends failed but also to abort the current<a name="line.108"></a>
-<span class="sourceLineNo">109</span> * context, usually the hosting server. We need to replay the WALs. <br><a name="line.109"></a>
-<span class="sourceLineNo">110</span> * TODO: Change this semantic. A roll of WAL may be sufficient as long as we have flagged client<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * that the append failed. <br><a name="line.111"></a>
-<span class="sourceLineNo">112</span> * TODO: replication may pick up these last edits though they have been marked as failed append<a name="line.112"></a>
-<span class="sourceLineNo">113</span> * (Need to keep our own file lengths, not rely on HDFS).<a name="line.113"></a>
-<span class="sourceLineNo">114</span> */<a name="line.114"></a>
-<span class="sourceLineNo">115</span>@InterfaceAudience.Private<a name="line.115"></a>
-<span class="sourceLineNo">116</span>public abstract class AbstractFSWAL<W extends WriterBase> implements WAL {<a name="line.116"></a>
+<span class="sourceLineNo">025</span>import java.io.FileNotFoundException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.io.IOException;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.io.InterruptedIOException;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.lang.management.MemoryType;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.net.URLEncoder;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.ArrayList;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.Arrays;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.Comparator;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.util.List;<a name="line.33"></a>
+<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>
+<span class="sourceLineNo">037</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.37"></a>
+<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>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.log.HBaseMarkers;<a name="line.61"></a>
+<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>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.67"></a>
+<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>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.wal.WALFactory;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.wal.WALKeyImpl;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.wal.WALPrettyPrinter;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.wal.WALProvider.WriterBase;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.hadoop.util.StringUtils;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.apache.htrace.core.TraceScope;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>import org.slf4j.Logger;<a name="line.82"></a>
+<span class="sourceLineNo">083</span>import org.slf4j.LoggerFactory;<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.85"></a>
+<span class="sourceLineNo">086</span><a name="line.86"></a>
+<span class="sourceLineNo">087</span>/**<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * Implementation of {@link WAL} to go against {@link FileSystem}; i.e. keep WALs in HDFS. Only one<a name="line.88"></a>
+<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>
+<span class="sourceLineNo">092</span> * As data is flushed from the MemStore to other on-disk structures (files sorted by key, hfiles), a<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * WAL becomes obsolete. We can let go of all the log edits/entries for a given HRegion-sequence id.<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * A bunch of work in the below is done keeping account of these region sequence ids -- what is<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * flushed out to hfiles, and what is yet in WAL and in memory only.<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * <p><a name="line.96"></a>
+<span class="sourceLineNo">097</span> * It is only practical to delete entire files. Thus, we delete an entire on-disk file<a name="line.97"></a>
+<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>
+<span class="sourceLineNo">100</span> * <p><a name="line.100"></a>
+<span class="sourceLineNo">101</span> * To read an WAL, call<a name="line.101"></a>
+<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> private static final Logger LOG = LoggerFactory.getLogger(AbstractFSWAL.class);<a name="line.118"></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> protected static final int DEFAULT_SLOW_SYNC_TIME_MS = 100; // in ms<a name="line.120"></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> private static final int DEFAULT_WAL_SYNC_TIMEOUT_MS = 5 * 60 * 1000; // in ms, 5min<a name="line.122"></a>
-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> /**<a name="line.124"></a>
-<span class="sourceLineNo">125</span> * file system instance<a name="line.125"></a>
-<span class="sourceLineNo">126</span> */<a name="line.126"></a>
-<span class="sourceLineNo">127</span> protected final FileSystem fs;<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> * WAL directory, where all WAL files would be placed.<a name="line.130"></a>
-<span class="sourceLineNo">131</span> */<a name="line.131"></a>
-<span class="sourceLineNo">132</span> protected final Path walDir;<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> /**<a name="line.134"></a>
-<span class="sourceLineNo">135</span> * dir path where old logs are kept.<a name="line.135"></a>
-<span class="sourceLineNo">136</span> */<a name="line.136"></a>
-<span class="sourceLineNo">137</span> protected final Path walArchiveDir;<a name="line.137"></a>
-<span class="sourceLineNo">138</span><a name="line.138"></a>
-<span class="sourceLineNo">139</span> /**<a name="line.139"></a>
-<span class="sourceLineNo">140</span> * Matches just those wal files that belong to this wal instance.<a name="line.140"></a>
-<span class="sourceLineNo">141</span> */<a name="line.141"></a>
-<span class="sourceLineNo">142</span> protected final PathFilter ourFiles;<a name="line.142"></a>
-<span class="sourceLineNo">143</span><a name="line.143"></a>
-<span class="sourceLineNo">144</span> /**<a name="line.144"></a>
-<span class="sourceLineNo">145</span> * Prefix of a WAL file, usually the region server name it is hosted on.<a name="line.145"></a>
-<span class="sourceLineNo">146</span> */<a name="line.146"></a>
-<span class="sourceLineNo">147</span> protected final String walFilePrefix;<a name="line.147"></a>
-<span class="sourceLineNo">148</span><a name="line.148"></a>
-<span class="sourceLineNo">149</span> /**<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * Suffix included on generated wal file names<a name="line.150"></a>
-<span class="sourceLineNo">151</span> */<a name="line.151"></a>
-<span class="sourceLineNo">152</span> protected final String walFileSuffix;<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> /**<a name="line.154"></a>
-<span class="sourceLineNo">155</span> * Prefix used when checking for wal membership.<a name="line.155"></a>
-<span class="sourceLineNo">156</span> */<a name="line.156"></a>
-<span class="sourceLineNo">157</span> protected final String prefixPathStr;<a name="line.157"></a>
+<span class="sourceLineNo">122</span> /**<a name="line.122"></a>
+<span class="sourceLineNo">123</span> * file system instance<a name="line.123"></a>
+<span class="sourceLineNo">124</span> */<a name="line.124"></a>
+<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>
+<span class="sourceLineNo">146</span><a name="line.146"></a>
+<span class="sourceLineNo">147</span> /**<a name="line.147"></a>
+<span class="sourceLineNo">148</span> * Suffix included on generated wal file names<a name="line.148"></a>
+<span class="sourceLineNo">149</span> */<a name="line.149"></a>
+<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>
+<span class="sourceLineNo">154</span> */<a name="line.154"></a>
+<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> protected final WALCoprocessorHost coprocessorHost;<a name="line.159"></a>
-<span class="sourceLineNo">160</span><a name="line.160"></a>
-<span class="sourceLineNo">161</span> /**<a name="line.161"></a>
-<span class="sourceLineNo">162</span> * conf object<a name="line.162"></a>
-<span class="sourceLineNo">163</span> */<a name="line.163"></a>
-<span class="sourceLineNo">164</span> protected final Configuration conf;<a name="line.164"></a>
-<span class="sourceLineNo">165</span><a name="line.165"></a>
-<span class="sourceLineNo">166</span> /** Listeners that are called on WAL events. */<a name="line.166"></a>
-<span class="sourceLineNo">167</span> protected final List<WALActionsListener> listeners = new CopyOnWriteArrayList<>();<a name="line.167"></a>
-<span class="sourceLineNo">168</span><a name="line.168"></a>
-<span class="sourceLineNo">169</span> /**<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * Class that does accounting of sequenceids in WAL subsystem. Holds oldest outstanding sequence<a name="line.170"></a>
-<span class="sourceLineNo">171</span> * id as yet not flushed as well as the most recent edit sequence id appended to the WAL. Has<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * facility for answering questions such as "Is it safe to GC a WAL?".<a name="line.172"></a>
-<span class="sourceLineNo">173</span> */<a name="line.173"></a>
-<span class="sourceLineNo">174</span> protected final SequenceIdAccounting sequenceIdAccounting = new SequenceIdAccounting();<a name="line.174"></a>
+<span class="sourceLineNo">159</span> /**<a name="line.159"></a>
+<span class="sourceLineNo">160</span> * conf object<a name="line.160"></a>
+<span class="sourceLineNo">161</span> */<a name="line.161"></a>
+<span class="sourceLineNo">162</span> protected final Configuration conf;<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> /** Listeners that are called on WAL events. */<a name="line.164"></a>
+<span class="sourceLineNo">165</span> protected final List<WALActionsListener> listeners = new CopyOnWriteArrayList<>();<a name="line.165"></a>
+<span class="sourceLineNo">166</span><a name="line.166"></a>
+<span class="sourceLineNo">167</span> /**<a name="line.167"></a>
+<span class="sourceLineNo">168</span> * Class that does accounting of sequenceids in WAL subsystem. Holds oldest outstanding sequence<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * id as yet not flushed as well as the most recent edit sequence id appended to the WAL. Has<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * facility for answering questions such as "Is it safe to GC a WAL?".<a name="line.170"></a>
+<span class="sourceLineNo">171</span> */<a name="line.171"></a>
+<span class="sourceLineNo">172</span> protected final SequenceIdAccounting sequenceIdAccounting = new SequenceIdAccounting();<a name="line.172"></a>
+<span class="sourceLineNo">173</span><a name="line.173"></a>
+<span class="sourceLineNo">174</span> protected final long slowSyncNs;<a name="line.174"></a>
<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> /** The barrier used to ensure that close() waits for all log rolls and flushes to finish. */<a name="line.176"></a>
-<span class="sourceLineNo">177</span> protected final DrainBarrier closeBarrier = new DrainBarrier();<a name="line.177"></a>
-<span class="sourceLineNo">178</span><a name="line.178"></a>
-<span class="sourceLineNo">179</span> protected final long slowSyncNs;<a name="line.179"></a>
+<span class="sourceLineNo">176</span> private final long walSyncTimeoutNs;<a name="line.176"></a>
+<span class="sourceLineNo">177</span><a name="line.177"></a>
+<span class="sourceLineNo">178</span> // If > than this size, roll the log.<a name="line.178"></a>
+<span class="sourceLineNo">179</span> protected final long logrollsize;<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span> private final long walSyncTimeoutNs;<a name="line.181"></a>
-<span class="sourceLineNo">182</span><a name="line.182"></a>
-<span class="sourceLineNo">183</span> // If > than this size, roll the log.<a name="line.183"></a>
-<span class="sourceLineNo">184</span> protected final long logrollsize;<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> /*<a name="line.186"></a>
-<span class="sourceLineNo">187</span> * If more than this many logs, force flush of oldest region to oldest edit goes to disk. If too<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * many and we crash, then will take forever replaying. Keep the number of logs tidy.<a name="line.188"></a>
-<span class="sourceLineNo">189</span> */<a name="line.189"></a>
-<span class="sourceLineNo">190</span> protected final int maxLogs;<a name="line.190"></a>
-<span class="sourceLineNo">191</span><a name="line.191"></a>
-<span class="sourceLineNo">192</span> /**<a name="line.192"></a>
-<span class="sourceLineNo">193</span> * This lock makes sure only one log roll runs at a time. Should not be taken while any other lock<a name="line.193"></a>
-<span class="sourceLineNo">194</span> * is held. We don't just use synchronized because that results in bogus and tedious findbugs<a name="line.194"></a>
-<span class="sourceLineNo">195</span> * warning when it thinks synchronized controls writer thread safety. It is held when we are<a name="line.195"></a>
-<span class="sourceLineNo">196</span> * actually rolling the log. It is checked when we are looking to see if we should roll the log or<a name="line.196"></a>
-<span class="sourceLineNo">197</span> * not.<a name="line.197"></a>
-<span class="sourceLineNo">198</span> */<a name="line.198"></a>
-<span class="sourceLineNo">199</span> protected final ReentrantLock rollWriterLock = new ReentrantLock(true);<a name="line.199"></a>
-<span class="sourceLineNo">200</span><a name="line.200"></a>
-<span class="sourceLineNo">201</span> // The timestamp (in ms) when the log file was created.<a name="line.201"></a>
-<span class="sourceLineNo">202</span> protected final AtomicLong filenum = new AtomicLong(-1);<a name="line.202"></a>
-<span class="sourceLineNo">203</span><a name="line.203"></a>
-<span class="sourceLineNo">204</span> // Number of transactions in the current Wal.<a name="line.204"></a>
-<span class="sourceLineNo">205</span> protected final AtomicInteger numEntries = new AtomicInteger(0);<a name="line.205"></a>
-<span class="sourceLineNo">206</span><a name="line.206"></a>
-<span class="sourceLineNo">207</span> /**<a name="line.207"></a>
-<span class="sourceLineNo">208</span> * The highest known outstanding unsync'd WALEdit transaction id. Usually, we use a queue to pass<a name="line.208"></a>
-<span class="sourceLineNo">209</span> * WALEdit to background consumer thread, and the transaction id is the sequence number of the<a name="line.209"></a>
-<span class="sourceLineNo">210</span> * corresponding entry in queue.<a name="line.210"></a>
-<span class="sourceLineNo">211</span> */<a name="line.211"></a>
-<span class="sourceLineNo">212</span> protected volatile long highestUnsyncedTxid = -1;<a name="line.212"></a>
-<span class="sourceLineNo">213</span><a name="line.213"></a>
-<span class="sourceLineNo">214</span> /**<a name="line.214"></a>
-<span class="sourceLineNo">215</span> * Updated to the transaction id of the last successful sync call. This can be less than<a name="line.215"></a>
-<span class="sourceLineNo">216</span> * {@link #highestUnsyncedTxid} for case where we have an append where a sync has not yet come in<a name="line.216"></a>
-<span class="sourceLineNo">217</span> * for it.<a name="line.217"></a>
+<span class="sourceLineNo">181</span> /*<a name="line.181"></a>
+<span class="sourceLineNo">182</span> * If more than this many logs, force flush of oldest region to oldest edit goes to disk. If too<a name="line.182"></a>
+<span class="sourceLineNo">183</span> * many and we crash, then will take forever replaying. Keep the number of logs tidy.<a name="line.183"></a>
+<span class="sourceLineNo">184</span> */<a name="line.184"></a>
+<span class="sourceLineNo">185</span> protected final int maxLogs;<a name="line.185"></a>
+<span class="sourceLineNo">186</span><a name="line.186"></a>
+<span class="sourceLineNo">187</span> /**<a name="line.187"></a>
+<span class="sourceLineNo">188</span> * This lock makes sure only one log roll runs at a time. Should not be taken while any other lock<a name="line.188"></a>
+<span class="sourceLineNo">189</span> * is held. We don't just use synchronized because that results in bogus and tedious findbugs<a name="line.189"></a>
+<span class="sourceLineNo">190</span> * warning when it thinks synchronized controls writer thread safety. It is held when we are<a name="line.190"></a>
+<span class="sourceLineNo">191</span> * actually rolling the log. It is checked when we are looking to see if we should roll the log or<a name="line.191"></a>
+<span class="sourceLineNo">192</span> * not.<a name="line.192"></a>
+<span class="sourceLineNo">193</span> */<a name="line.193"></a>
+<span class="sourceLineNo">194</span> protected final ReentrantLock rollWriterLock = new ReentrantLock(true);<a name="line.194"></a>
+<span class="sourceLineNo">195</span><a name="line.195"></a>
+<span class="sourceLineNo">196</span> // The timestamp (in ms) when the log file was created.<a name="line.196"></a>
+<span class="sourceLineNo">197</span> protected final AtomicLong filenum = new AtomicLong(-1);<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span> // Number of transactions in the current Wal.<a name="line.199"></a>
+<span class="sourceLineNo">200</span> protected final AtomicInteger numEntries = new AtomicInteger(0);<a name="line.200"></a>
+<span class="sourceLineNo">201</span><a name="line.201"></a>
+<span class="sourceLineNo">202</span> /**<a name="line.202"></a>
+<span class="sourceLineNo">203</span> * The highest known outstanding unsync'd WALEdit transaction id. Usually, we use a queue to pass<a name="line.203"></a>
+<span class="sourceLineNo">204</span> * WALEdit to background consumer thread, and the transaction id is the sequence number of the<a name="line.204"></a>
+<span class="sourceLineNo">205</span> * corresponding entry in queue.<a name="line.205"></a>
+<span class="sourceLineNo">206</span> */<a name="line.206"></a>
+<span class="sourceLineNo">207</span> protected volatile long highestUnsyncedTxid = -1;<a name="line.207"></a>
+<span class="sourceLineNo">208</span><a name="line.208"></a>
+<span class="sourceLineNo">209</span> /**<a name="line.209"></a>
+<span class="sourceLineNo">210</span> * Updated to the transaction id of the last successful sync call. This can be less than<a name="line.210"></a>
+<span class="sourceLineNo">211</span> * {@link #highestUnsyncedTxid} for case where we have an append where a sync has not yet come in<a name="line.211"></a>
+<span class="sourceLineNo">212</span> * for it.<a name="line.212"></a>
+<span class="sourceLineNo">213</span> */<a name="line.213"></a>
+<span class="sourceLineNo">214</span> protected final AtomicLong highestSyncedTxid = new AtomicLong(0);<a name="line.214"></a>
+<span class="sourceLineNo">215</span><a name="line.215"></a>
+<span class="sourceLineNo">216</span> /**<a name="line.216"></a>
+<span class="sourceLineNo">217</span> * The total size of wal<a name="line.217"></a>
<span class="sourceLineNo">218</span> */<a name="line.218"></a>
-<span class="sourceLineNo">219</span> protected final AtomicLong highestSyncedTxid = new AtomicLong(0);<a name="line.219"></a>
-<span class="sourceLineNo">220</span><a name="line.220"></a>
-<span class="sourceLineNo">221</span> /**<a name="line.221"></a>
-<span class="sourceLineNo">222</span> * The total size of wal<a name="line.222"></a>
-<span class="sourceLineNo">223</span> */<a name="line.223"></a>
-<span class="sourceLineNo">224</span> protected final AtomicLong totalLogSize = new AtomicLong(0);<a name="line.224"></a>
-<span class="sourceLineNo">225</span> /**<a name="line.225"></a>
-<span class="sourceLineNo">226</span> * Current log file.<a name="line.226"></a>
-<span class="sourceLineNo">227</span> */<a name="line.227"></a>
-<span class="sourceLineNo">228</span> volatile W writer;<a name="line.228"></a>
+<span class="sourceLineNo">219</span> protected final AtomicLong totalLogSize = new AtomicLong(0);<a name="line.219"></a>
+<span class="sourceLineNo">220</span> /**<a name="line.220"></a>
+<span class="sourceLineNo">221</span> * Current log file.<a name="line.221"></a>
+<span class="sourceLineNo">222</span> */<a name="line.222"></a>
+<span class="sourceLineNo">223</span> volatile W writer;<a name="line.223"></a>
+<span class="sourceLineNo">224</span><a name="line.224"></a>
+<span class="sourceLineNo">225</span> // Last time to check low replication on hlog's pipeline<a name="line.225"></a>
+<span class="sourceLineNo">226</span> private long lastTimeCheckLowReplication = EnvironmentEdgeManager.currentTime();<a name="line.226"></a>
+<span class="sourceLineNo">227</span><a name="line.227"></a>
+<span class="sourceLineNo">228</span> protected volatile boolean closed = false;<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
-<span class="sourceLineNo">230</span> // Last time to check low replication on hlog's pipeline<a name="line.230"></a>
-<span class="sourceLineNo">231</span> private long lastTimeCheckLowReplication = EnvironmentEdgeManager.currentTime();<a name="line.231"></a>
-<span class="sourceLineNo">232</span><a name="line.232"></a>
-<span class="sourceLineNo">233</span> protected volatile boolean closed = false;<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> protected final AtomicBoolean shutdown = new AtomicBoolean(false);<a name="line.235"></a>
-<span class="sourceLineNo">236</span> /**<a name="line.236"></a>
-<span class="sourceLineNo">237</span> * WAL Comparator; it compares the timestamp (log filenum), present in the log file name. Throws<a name="line.237"></a>
-<span class="sourceLineNo">238</span> * an IllegalArgumentException if used to compare paths from different wals.<a name="line.238"></a>
-<span class="sourceLineNo">239</span> */<a name="line.239"></a>
-<span class="sourceLineNo">240</span> final Comparator<Path> LOG_NAME_COMPARATOR =<a name="line.240"></a>
-<span class="sourceLineNo">241</span> (o1, o2) -> Long.compare(getFileNumFromFileName(o1), getFileNumFromFileName(o2));<a name="line.241"></a>
-<span class="sourceLineNo">242</span><a name="line.242"></a>
-<span class="sourceLineNo">243</span> private static final class WalProps {<a name="line.243"></a>
-<span class="sourceLineNo">244</span><a name="line.244"></a>
-<span class="sourceLineNo">245</span> /**<a name="line.245"></a>
-<span class="sourceLineNo">246</span> * Map the encoded region name to the highest sequence id. Contain all the regions it has<a name="line.246"></a>
-<span class="sourceLineNo">247</span> * entries of<a name="line.247"></a>
-<span class="sourceLineNo">248</span> */<a name="line.248"></a>
-<span class="sourceLineNo">249</span> public final Map<byte[], Long> encodedName2HighestSequenceId;<a name="line.249"></a>
-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> /**<a name="line.251"></a>
-<span class="sourceLineNo">252</span> * The log file size. Notice that the size may not be accurate if we do asynchronous close in<a name="line.252"></a>
-<span class="sourceLineNo">253</span> * sub classes.<a name="line.253"></a>
-<span class="sourceLineNo">254</span> */<a name="line.254"></a>
-<span class="sourceLineNo">255</span> public final long logSize;<a name="line.255"></a>
-<span class="sourceLineNo">256</span><a name="line.256"></a>
-<span class="sourceLineNo">257</span> public WalProps(Map<byte[], Long> encodedName2HighestSequenceId, long logSize) {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> this.encodedName2HighestSequenceId = encodedName2HighestSequenceId;<a name="line.258"></a>
-<span class="sourceLineNo">259</span> this.logSize = logSize;<a name="line.259"></a>
-<span class="sourceLineNo">260</span> }<a name="line.260"></a>
-<span class="sourceLineNo">261</span> }<a name="line.261"></a>
-<span class="sourceLineNo">262</span><a name="line.262"></a>
-<span class="sourceLineNo">263</span> /**<a name="line.263"></a>
-<span class="sourceLineNo">264</span> * Map of WAL log file to properties. The map is sorted by the log file creation timestamp<a name="line.264"></a>
-<span class="sourceLineNo">265</span> * (contained in the log file name).<a name="line.265"></a>
-<span class="sourceLineNo">266</span> */<a name="line.266"></a>
-<span class="sourceLineNo">267</span> protected ConcurrentNavigableMap<Path, WalProps> walFile2Props =<a name="line.267"></a>
-<span class="sourceLineNo">268</span> new ConcurrentSkipListMap<>(LOG_NAME_COMPARATOR);<a name="line.268"></a>
-<span class="sourceLineNo">269</span><a name="line.269"></a>
-<span class="sourceLineNo">270</span> /**<a name="line.270"></a>
-<span class="sourceLineNo">271</span> * Map of {@link SyncFuture}s keyed by Handler objects. Used so we reuse SyncFutures.<a name="line.271"></a>
-<span class="sourceLineNo">272</span> * <p><a name="line.272"></a>
-<span class="sourceLineNo">273</span> * TODO: Reuse FSWALEntry's rather than create them anew each time as we do SyncFutures here.<a name="line.273"></a>
-<span class="sourceLineNo">274</span> * <p><a name="line.274"></a>
-<span class="sourceLineNo">275</span> * TODO: Add a FSWalEntry and SyncFuture as thread locals on handlers rather than have them get<a name="line.275"></a>
-<span class="sourceLineNo">276</span> * them from this Map?<a name="line.276"></a>
-<span class="sourceLineNo">277</span> */<a name="line.277"></a>
-<span class="sourceLineNo">278</span> private final ConcurrentMap<Thread, SyncFuture> syncFuturesByHandler;<a name="line.278"></a>
-<span class="sourceLineNo">279</span><a name="line.279"></a>
-<span class="sourceLineNo">280</span> /**<a name="line.280"></a>
-<span class="sourceLineNo">281</span> * The class name of the runtime implementation, used as prefix for logging/tracing.<a name="line.281"></a>
-<span class="sourceLineNo">282</span> * <p><a name="line.282"></a>
-<span class="sourceLineNo">283</span> * Performance testing shows getClass().getSimpleName() might be a bottleneck so we store it here,<a name="line.283"></a>
-<span class="sourceLineNo">284</span> * refer to HBASE-17676 for more details<a name="line.284"></a>
-<span class="sourceLineNo">285</span> * </p><a name="line.285"></a>
-<span class="sourceLineNo">286</span> */<a name="line.286"></a>
-<span class="sourceLineNo">287</span> protected final String implClassName;<a name="line.287"></a>
-<span class="sourceLineNo">288</span><a name="line.288"></a>
-<span class="sourceLineNo">289</span> public long getFilenum() {<a name="line.289"></a>
-<span class="sourceLineNo">290</span> return this.filenum.get();<a name="line.290"></a>
-<span class="sourceLineNo">291</span> }<a name="line.291"></a>
-<span class="sourceLineNo">292</span><a name="line.292"></a>
-<span class="sourceLineNo">293</span> /**<a name="line.293"></a>
-<span class="sourceLineNo">294</span> * A log file has a creation timestamp (in ms) in its file name ({@link #filenum}. This helper<a name="line.294"></a>
-<span class="sourceLineNo">295</span> * method returns the creation timestamp from a given log file. It extracts the timestamp assuming<a name="line.295"></a>
-<span class="sourceLineNo">296</span> * the filename is created with the {@link #computeFilename(long filenum)} method.<a name="line.296"></a>
-<span class="sourceLineNo">297</span> * @return timestamp, as in the log file name.<a name="line.297"></a>
-<span class="sourceLineNo">298</span> */<a name="line.298"></a>
-<span class="sourceLineNo">299</span> protected long getFileNumFromFileName(Path fileName) {<a name="line.299"></a>
-<span class="sourceLineNo">300</span> checkNotNull(fileName, "file name can't be null");<a name="line.300"></a>
-<span class="sourceLineNo">301</span> if (!ourFiles.accept(fileName)) {<a name="line.301"></a>
-<span class="sourceLineNo">302</span> throw new IllegalArgumentException(<a name="line.302"></a>
-<span class="sourceLineNo">303</span> "The log file " + fileName + " doesn't belong to this WAL. (" + toString() + ")");<a name="line.303"></a>
-<span class="sourceLineNo">304</span> }<a name="line.304"></a>
-<span class="sourceLineNo">305</span> final String fileNameString = fileName.toString();<a name="line.305"></a>
-<span class="sourceLineNo">306</span> String chompedPath = fileNameString.substring(prefixPathStr.length(),<a name="line.306"></a>
-<span class="sourceLineNo">307</span> (fileNameString.length() - walFileSuffix.length()));<a name="line.307"></a>
-<span class="sourceLineNo">308</span> return Long.parseLong(chompedPath);<a name="line.308"></a>
+<span class="sourceLineNo">230</span> protected final AtomicBoolean shutdown = new AtomicBoolean(false);<a name="line.230"></a>
+<span class="sourceLineNo">231</span> /**<a name="line.231"></a>
+<span class="sourceLineNo">232</span> * WAL Comparator; it compares the timestamp (log filenum), present in the log file name. Throws<a name="line.232"></a>
+<span class="sourceLineNo">233</span> * an IllegalArgumentException if used to compare paths from different wals.<a name="line.233"></a>
+<span class="sourceLineNo">234</span> */<a name="line.234"></a>
+<span class="sourceLineNo">235</span> final Comparator<Path> LOG_NAME_COMPARATOR =<a name="line.235"></a>
+<span class="sourceLineNo">236</span> (o1, o2) -> Long.compare(getFileNumFromFileName(o1), getFileNumFromFileName(o2));<a name="line.236"></a>
+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span> private static final class WalProps {<a name="line.238"></a>
+<span class="sourceLineNo">239</span><a name="line.239"></a>
+<span class="sourceLineNo">240</span> /**<a name="line.240"></a>
+<span class="sourceLineNo">241</span> * Map the encoded region name to the highest sequence id. Contain all the regions it has<a name="line.241"></a>
+<span class="sourceLineNo">242</span> * entries of<a name="line.242"></a>
+<span class="sourceLineNo">243</span> */<a name="line.243"></a>
+<span class="sourceLineNo">244</span> public final Map<byte[], Long> encodedName2HighestSequenceId;<a name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
+<span class="sourceLineNo">246</span> /**<a name="line.246"></a>
+<span class="sourceLineNo">247</span> * The log file size. Notice that the size may not be accurate if we do asynchronous close in<a name="line.247"></a>
+<span class="sourceLineNo">248</span> * sub classes.<a name="line.248"></a>
+<span class="sourceLineNo">249</span> */<a name="line.249"></a>
+<span class="sourceLineNo">250</span> public final long logSize;<a name="line.250"></a>
+<span class="sourceLineNo">251</span><a name="line.251"></a>
+<span class="sourceLineNo">252</span> public WalProps(Map<byte[], Long> encodedName2HighestSequenceId, long logSize) {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> this.encodedName2HighestSequenceId = encodedName2HighestSequenceId;<a name="line.253"></a>
+<span class="sourceLineNo">254</span> this.logSize = logSize;<a name="line.254"></a>
+<span class="sourceLineNo">255</span> }<a name="line.255"></a>
+<span class="sourceLineNo">256</span> }<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> * Map of WAL log file to properties. The map is sorted by the log file creation timestamp<a name="line.259"></a>
+<span class="sourceLineNo">260</span> * (contained in the log file name).<a name="line.260"></a>
+<span class="sourceLineNo">261</span> */<a name="line.261"></a>
+<span class="sourceLineNo">262</span> protected ConcurrentNavigableMap<Path, WalProps> walFile2Props =<a name="line.262"></a>
+<span class="sourceLineNo">263</span> new ConcurrentSkipListMap<>(LOG_NAME_COMPARATOR);<a name="line.263"></a>
+<span class="sourceLineNo">264</span><a name="line.264"></a>
+<span class="sourceLineNo">265</span> /**<a name="line.265"></a>
+<span class="sourceLineNo">266</span> * Map of {@link SyncFuture}s keyed by Handler objects. Used so we reuse SyncFutures.<a name="line.266"></a>
+<span class="sourceLineNo">267</span> * <p><a name="line.267"></a>
+<span class="sourceLineNo">268</span> * TODO: Reuse FSWALEntry's rather than create them anew each time as we do SyncFutures here.<a name="line.268"></a>
+<span class="sourceLineNo">269</span> * <p><a name="line.269"></a>
+<span class="sourceLineNo">270</span> * TODO: Add a FSWalEntry and SyncFuture as thread locals on handlers rather than have them get<a name="line.270"></a>
+<span class="sourceLineNo">271</span> * them from this Map?<a name="line.271"></a>
+<span class="sourceLineNo">272</span> */<a name="line.272"></a>
+<span class="sourceLineNo">273</span> private final ConcurrentMap<Thread, SyncFuture> syncFuturesByHandler;<a name="line.273"></a>
+<span class="sourceLineNo">274</span><a name="line.274"></a>
+<span class="sourceLineNo">275</span> /**<a name="line.275"></a>
+<span class="sourceLineNo">276</span> * The class name of the runtime implementation, used as prefix for logging/tracing.<a name="line.276"></a>
+<span class="sourceLineNo">277</span> * <p><a name="line.277"></a>
+<span class="sourceLineNo">278</span> * Performance testing shows getClass().getSimpleName() might be a bottleneck so we store it here,<a name="line.278"></a>
+<span class="sourceLineNo">279</span> * refer to HBASE-17676 for more details<a name="line.279"></a>
+<span class="sourceLineNo">280</span> * </p><a name="line.280"></a>
+<span class="sourceLineNo">281</span> */<a name="line.281"></a>
+<span class="sourceLineNo">282</span> protected final String implClassName;<a name="line.282"></a>
+<span class="sourceLineNo">283</span><a name="line.283"></a>
+<span class="sourceLineNo">284</span> public long getFilenum() {<a name="line.284"></a>
+<span class="sourceLineNo">285</span> return this.filenum.get();<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 name="line.288"></a>
+<span class="sourceLineNo">289</span> * A log file has a creation timestamp (in ms) in its file name ({@link #filenum}. This helper<a name="line.289"></a>
+<span class="sourceLineNo">290</span> * method returns the creation timestamp from a given log file. It extracts the timestamp assuming<a name="line.290"></a>
+<span class="sourceLineNo">291</span> * the filename is created with the {@link #computeFilename(long filenum)} method.<a name="line.291"></a>
+<span class="sourceLineNo">292</span> * @return timestamp, as in the log file name.<a name="line.292"></a>
+<span class="sourceLineNo">293</span> */<a name="line.293"></a>
+<span class="sourceLineNo">294</span> protected long getFileNumFromFileName(Path fileName) {<a name="line.294"></a>
+<span class="sourceLineNo">295</span> checkNotNull(fileName, "file name can't be null");<a name="line.295"></a>
+<span class="sourceLineNo">296</span> if (!ourFiles.accept(fileName)) {<a name="line.296"></a>
+<span class="sourceLineNo">297</span> throw new IllegalArgumentException(<a name="line.297"></a>
+<span class="sourceLineNo">298</span> "The log file " + fileName + " doesn't belong to this WAL. (" + toString() + ")");<a name="line.298"></a>
+<span class="sourceLineNo">299</span> }<a name="line.299"></a>
+<span class="sourceLineNo">300</span> final String fileNameString = fileName.toString();<a name="line.300"></a>
+<span class="sourceLineNo">301</span> String chompedPath = fileNameString.substring(prefixPathStr.length(),<a name="line.301"></a>
+<span class="sourceLineNo">302</span> (fileNameString.length() - walFileSuffix.length()));<a name="line.302"></a>
+<span class="sourceLineNo">303</span> return Long.parseLong(chompedPath);<a name="line.303"></a>
+<span class="sourceLineNo">304</span> }<a name="line.304"></a>
+<span class="sourceLineNo">305</span><a name="line.305"></a>
+<span class="sourceLineNo">306</span> private int calculateMaxLogFiles(Configuration conf, long logRollSize) {<a name="line.306"></a>
+<span class="sourceLineNo">307</span> Pair<Long, MemoryType> globalMemstoreSize = MemorySizeUtil.getGlobalMemStoreSize(conf);<a name="line.307"></a>
+<span class="sourceLineNo">308</span> return (int) ((globalMemstoreSize.getFirst() * 2) / logRollSize);<a name="line.308"></a>
<span class="sourceLineNo">309</span> }<a name="line.309"></a>
<span class="sourceLineNo">310</span><a name="line.310"></a>
-<span class="sourceLineNo">311</span> private int calculateMaxLogFiles(Configuration conf, long logRollSize) {<a name="line.311"></a>
-<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>
-<span class="sourceLineNo">336</span><a name="line.336"></a>
-<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>
-<span class="sourceLineNo">341</span> this.fs = fs;<a name="line.341"></a>
-<span class="sourceLineNo">342</span> this.walDir = new Path(rootDir, logDir);<a name="line.342"></a>
-<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">348</span> }<a name="line.348"></a>
-<span class="sourceLineNo">349</span><a name="line.349"></a>
-<span class="sourceLineNo">350</span> if (!fs.exists(this.walArchiveDir)) {<a name="line.350"></a>
-<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>
-<span class="sourceLineNo">356</span> // If prefix is null||empty then just name it wal<a name="line.356"></a>
-<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>
-<span class="sourceLineNo">360</span> if (suffix != null && !(suffix.isEmpty()) && !(suffix.startsWith(WAL_FILE_NAME_DELIMITER))) {<a name="line.360"></a>
-<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>
-<span class="sourceLineNo">366</span> CommonFSUtils.setStoragePolicy(fs, conf, this.walDir, HConstants.WAL_STORAGE_POLICY,<a name="line.366"></a>
-<span class="sourceLineNo">367</span> HConstants.DEFAULT_WAL_STORAGE_POLICY);<a name="line.367"></a>
-<span class="sourceLineNo">368</span> this.walFileSuffix = (suffix == null) ? "" : URLEncoder.encode(suffix, "UTF8");<a name="line.368"></a>
-<span class="sourceLineNo">369</span> this.prefixPathStr = new Path(walDir, walFilePrefix + WAL_FILE_NAME_DELIMITER).toString();<a name="line.369"></a>
-<span class="sourceLineNo">370</span><a name="line.370"></a>
-<span class="sourceLineNo">371</span> this.ourFiles = new PathFilter() {<a name="line.371"></a>
-<span class="sourceLineNo">372</span> @Override<a name="line.372"></a>
-<span class="sourceLineNo">373</span> public boolean accept(final Path fileName) {<a name="line.373"></a>
-<span class="sourceLineNo">374</span> // The path should start with dir/<prefix> and end with our suffix<a name="line.374"></a>
-<span class="sourceLineNo">375</span> final String fileNameString = fileName.toString();<a name="line.375"></a>
-<span class="sourceLineNo">376</span> if (!fileNameString.startsWith(prefixPathStr)) {<a name="line.376"></a>
-<span class="sourceLineNo">377</span> return false;<a name="line.377"></a>
-<span class="sourceLineNo">378</span> }<a name="line.378"></a>
-<span class="sourceLineNo">379</span> if (walFileSuffix.isEmpty()) {<a name="line.379"></a>
-<span class="sourceLineNo">380</span> // in the case of the null suffix, we need to ensure the filename ends with a timestamp.<a name="line.380"></a>
-<span class="sourceLineNo">381</span> return org.apache.commons.lang3.StringUtils<a name="line.381"></a>
-<span class="sourceLineNo">382</span> .isNumeric(fileNameString.substring(prefixPathStr.length()));<a name="line.382"></a>
-<span class="sourceLineNo">383</span> } else if (!fileNameString.endsWith(walFileSuffix)) {<a name="line.383"></a>
-<span class="sourceLineNo">384</span> return false;<a name="line.384"></a>
-<span class="sourceLineNo">385</span> }<a name="line.385"></a>
-<span class="sourceLineNo">386</span> return true;<a name="line.386"></a>
-<span class="sourceLineNo">387</span> }<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> if (failIfWALExists) {<a name="line.390"></a>
-<span class="sourceLineNo">391</span> final FileStatus[] walFiles = CommonFSUtils.listStatus(fs, walDir, ourFiles);<a name="line.391"></a>
-<span class="sourceLineNo">392</span> if (null != walFiles && 0 != walFiles.length) {<a name="line.392"></a>
-<span class="sourceLineNo">393</span> throw new IOException("Target WAL already exists within directory " + walDir);<a name="line.393"></a>
-<span class="sourceLineNo">394</span> }<a name="line.394"></a>
-<span class="sourceLineNo">395</span> }<a name="line.395"></a>
-<span class="sourceLineNo">396</span><a name="line.396"></a>
-<span class="sourceLineNo">397</span> // Register listeners. TODO: Should this exist anymore? We have CPs?<a name="line.397"></a>
-<span class="sourceLineNo">398</span> if (listeners != null) {<a name="line.398"></a>
-<span class="sourceLineNo">399</span> for (WALActionsListener i : listeners) {<a name="line.399"></a>
-<span class="sourceLineNo">400</span> registerWALActionsListener(i);<a name="line.400"></a>
-<span class="sourceLineNo">401</span> }<a name="line.401"></a>
-<span class="sourceLineNo">402</span> }<a name="line.402"></a>
-<span class="sourceLineNo">403</span> this.coprocessorHost = new WALCoprocessorHost(this, conf);<a name="line.403"></a>
-<span class="sourceLineNo">404</span><a name="line.404"></a>
-<span class="sourceLineNo">405</span> // Schedule a WAL roll when the WAL is 50% of the HDFS block size. Scheduling at 50% of block<a name="line.405"></a>
-<span class="sourceLineNo">406</span> // size should make it so WAL rolls before we get to the end-of-block (Block transitions cost<a name="line.406"></a>
-<span class="sourceLineNo">407</span> // some latency). In hbase-1 we did this differently. We scheduled a roll when we hit 95% of<a name="line.407"></a>
-<span class="sourceLineNo">408</span> // the block size but experience from the field has it that this was not enough time for the<a name="line.408"></a>
-<span class="sourceLineNo">409</span> // roll to happen before end-of-block. So the new accounting makes WALs of about the same<a name="line.409"></a>
-<span class="sourceLineNo">410</span> // size as those made in hbase-1 (to prevent surprise), we now have default block size as<a name="line.410"></a>
-<span class="sourceLineNo">411</span> // 2 times the DFS default: i.e. 2 * DFS default block size rolling at 50% full will generally<a name="line.411"></a>
-<span class="sourceLineNo">412</span> // make similar size logs to 1 * DFS default block size rolling at 95% full. See HBASE-19148.<a name="line.412"></a>
-<span class="sourceLineNo">413</span> final long blocksize = this.conf.getLong("hbase.regionserver.hlog.blocksize",<a name="line.413"></a>
-<span class="sourceLineNo">414</span> CommonFSUtils.getDefaultBlockSize(this.fs, this.walDir) * 2);<a name="line.414"></a>
-<span class="sourceLineNo">415</span> this.logrollsize =<a name="line.415"></a>
-<span class="sourceLineNo">416</span> (long) (blocksize * conf.getFloat("hbase.regionserver.logroll.multiplier", 0.5f));<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>
-<span class="sourceLineNo">422</span> this.maxLogs = conf.getInt("hbase.regionserver.maxlogs",<a name="line.422"></a>
-<span class="sourceLineNo">423</span> Math.max(32, calculateMaxLogFiles(conf, logrollsize)));<a name="line.423"></a>
-<span class="sourceLineNo">424</span><a name="line.424"></a>
-<span class="sourceLineNo">425</span> LOG.info("WAL configuration: blocksize=" + StringUtils.byteDesc(blocksize) + ", rollsize=" +<a name="line.425"></a>
-<span class="sourceLineNo">426</span> StringUtils.byteDesc(this.logrollsize) + ", prefix=" + this.walFilePrefix + ", suffix=" +<a name="line.426"></a>
-<span class="sourceLineNo">427</span> walFileSuffix + ", logDir=" + this.walDir + ", archiveDir=" + this.walArchiveDir);<a name="line.427"></a>
-<span class="sourceLineNo">428</span> this.slowSyncNs = TimeUnit.MILLISECONDS<a name="line.428"></a>
-<span class="sourceLineNo">429</span> .toNanos(conf.getInt("hbase.regionserver.hlog.slowsync.ms", DEFAULT_SLOW_SYNC_TIME_MS));<a name="line.429"></a>
-<span class="sourceLineNo">430</span> this.walSyncTimeoutNs = TimeUnit.MILLISECONDS<a name="line.430"></a>
-<span class="sourceLineNo">431</span> .toNanos(conf.getLong("hbase.regionserver.hlog.sync.timeout", DEFAULT_WAL_SYNC_TIMEOUT_MS));<a name="line.431"></a>
-<span class="sourceLineNo">432</span> int maxHandlersCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT, 200);<a name="line.432"></a>
-<span class="sourceLineNo">433</span> // Presize our map of SyncFutures by handler objects.<a name="line.433"></a>
-<span class="sourceLineNo">434</span> this.syncFuturesByHandler = new ConcurrentHashMap<>(maxHandlersCount);<a name="line.434"></a>
-<span class="sourceLineNo">435</span> this.implClassName = getClass().getSimpleName();<a name="line.435"></a>
+<span class="sourceLineNo">311</span> // must be power of 2<a name="line.311"></a>
+<span class="sourceLineNo">312</span> protected final int getPreallocatedEventCount() {<a name="line.312"></a>
+<span class="sourceLineNo">313</span> // Preallocate objects to use on the ring buffer. The way that appends and syncs work, we will<a name="line.313"></a>
+<span class="sourceLineNo">314</span> // be stuck and make no progress if the buffer is filled with appends only and there is no<a name="line.314"></a>
+<span class="sourceLineNo">315</span> // sync. If no sync, then the handlers will be outstanding just waiting on sync completion<a name="line.315"></a>
+<span class="sourceLineNo">316</span> // before they return.<a name="line.316"></a>
+<span class="sourceLineNo">317</span> int preallocatedEventCount =<a name="line.317"></a>
+<span class="sourceLineNo">318</span> this.conf.getInt("hbase.regionserver.wal.disruptor.event.count", 1024 * 16);<a name="line.318"></a>
+<span class="sourceLineNo">319</span> checkArgument(preallocatedEventCount >= 0,<a name="line.319"></a>
+<span class="sourceLineNo">320</span> "hbase.regionserver.wal.disruptor.event.count must > 0");<a name="line.320"></a>
+<span class="sourceLineNo">321</span> int floor = Integer.highestOneBit(preallocatedEventCount);<a name="line.321"></a>
+<span class="sourceLineNo">322</span> if (floor == preallocatedEventCount) {<a name="line.322"></a>
+<span class="sourceLineNo">323</span> return floor;<a name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span> // max capacity is 1 << 30<a name="line.325"></a>
+<span class="sourceLineNo">326</span> if (floor >= 1 << 29) {<a name="line.326"></a>
+<span class="sourceLineNo">327</span> return 1 << 30;<a name="line.327"></a>
+<span class="sourceLineNo">328</span> }<a name="line.328"></a>
+<span class="sourceLineNo">329</span> return floor << 1;<a name="line.329"></a>
+<span class="sourceLineNo">330</span> }<a name="line.330"></a>
+<span class="sourceLineNo">331</span><a name="line.331"></a>
+<span class="sourceLineNo">332</span> protected AbstractFSWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.332"></a>
+<span class="sourceLineNo">333</span> final String archiveDir, final Configuration conf, final List<WALActionsListener> listeners,<a name="line.333"></a>
+<span class="sourceLineNo">334</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.334"></a>
+<span class="sourceLineNo">335</span> throws FailedLogCloseException, IOException {<a name="line.335"></a>
+<span class="sourceLineNo">336</span> this.fs = fs;<a name="line.336"></a>
+<span class="sourceLineNo">337</span> this.walDir = new Path(rootDir, logDir);<a name="line.337"></a>
+<span class="sourceLineNo">338</span> this.walArchiveDir = new Path(rootDir, archiveDir);<a name="line.338"></a>
+<span class="sourceLineNo">339</span> this.conf = conf;<a name="line.339"></a>
+<span class="sourceLineNo">340</span><a name="line.340"></a>
+<span class="sourceLineNo">341</span> if (!fs.exists(walDir) && !fs.mkdirs(walDir)) {<a name="line.341"></a>
+<span class="sourceLineNo">342</span> throw new IOException("Unable to mkdir " + walDir);<a name="line.342"></a>
+<span class="sourceLineNo">343</span> }<a name="line.343"></a>
+<span class="sourceLineNo">344</span><a name="line.344"></a>
+<span class="sourceLineNo">345</span> if (!fs.exists(this.walArchiveDir)) {<a name="line.345"></a>
+<span class="sourceLineNo">346</span> if (!fs.mkdirs(this.walArchiveDir)) {<a name="line.346"></a>
+<span class="sourceLineNo">347</span> throw new IOException("Unable to mkdir " + this.walArchiveDir);<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>
+<span class="sourceLineNo">350</span><a name="line.350"></a>
+<span class="sourceLineNo">351</span> // If prefix is null||empty then just name it wal<a name="line.351"></a>
+<span class="sourceLineNo">352</span> this.walFilePrefix =<a name="line.352"></a>
+<span class="sourceLineNo">353</span> prefix == null || prefix.isEmpty() ? "wal" : URLEncoder.encode(prefix, "UTF8");<a name="line.353"></a>
+<span class="sourceLineNo">354</span> // we only correctly differentiate suffices when numeric ones start with '.'<a name="line.354"></a>
+<span class="sourceLineNo">355</span> if (suffix != null && !(suffix.isEmpty()) && !(suffix.startsWith(WAL_FILE_NAME_DELIMITER))) {<a name="line.355"></a>
+<span class="sourceLineNo">356</span> throw new IllegalArgumentException("WAL suffix must start with '" + WAL_FILE_NAME_DELIMITER +<a name="line.356"></a>
+<span class="sourceLineNo">357</span> "' but instead was '" + suffix + "'");<a name="line.357"></a>
+<span class="sourceLineNo">358</span> }<a name="line.358"></a>
+<span class="sourceLineNo">359</span> // Now that it exists, set the storage policy for the entire directory of wal files related to<a name="line.359"></a>
+<span class="sourceLineNo">360</span> // this FSHLog instance<a name="line.360"></a>
+<span class="sourceLineNo">361</span> CommonFSUtils.setStoragePolicy(fs, conf, this.walDir, HConstants.WAL_STORAGE_POLICY,<a name="line.361"></a>
+<span class="sourceLineNo">362</span> HConstants.DEFAULT_WAL_STORAGE_POLICY);<a name="line.362"></a>
+<span class="sourceLineNo">363</span> this.walFileSuffix = (suffix == null) ? "" : URLEncoder.encode(suffix, "UTF8");<a name="line.363"></a>
+<span class="sourceLineNo">364</span> this.prefixPathStr = new Path(walDir, walFilePrefix + WAL_FILE_NAME_DELIMITER).toString();<a name="line.364"></a>
+<span class="sourceLineNo">365</span><a name="line.365"></a>
+<span class="sourceLineNo">366</span> this.ourFiles = new PathFilter() {<a name="line.366"></a>
+<span class="sourceLineNo">367</span> @Override<a name="line.367"></a>
+<span class="sourceLineNo">368</span> public boolean accept(final Path fileName) {<a name="line.368"></a>
+<span class="sourceLineNo">369</span> // The path should start with dir/<prefix> and end with our suffix<a name="line.369"></a>
+<span class="sourceLineNo">370</span> final String fileNameString = fileName.toString();<a name="line.370"></a>
+<span class="sourceLineNo">371</span> if (!fileNameString.startsWith(prefixPathStr)) {<a name="line.371"></a>
+<span class="sourceLineNo">372</span> return false;<a name="line.372"></a>
+<span class="sourceLineNo">373</span> }<a name="line.373"></a>
+<span class="sourceLineNo">374</span> if (walFileSuffix.isEmpty()) {<a name="line.374"></a>
+<span class="sourceLineNo">375</span> // in the case of the null suffix, we need to ensure the filename ends with a timestamp.<a name="line.375"></a>
+<span class="sourceLineNo">376</span> return org.apache.commons.lang3.StringUtils<a name="line.376"></a>
+<span class="sourceLineNo">377</span> .isNumeric(fileNameString.substring(prefixPathStr.length()));<a name="line.377"></a>
+<span class="sourceLineNo">378</span> } else if (!fileNameString.endsWith(walFileSuffix)) {<a name="line.378"></a>
+<span class="sourceLineNo">379</span> return false;<a name="line.379"></a>
+<span class="sourceLineNo">380</span> }<a name="line.380"></a>
+<span class="sourceLineNo">381</span> return true;<a name="line.381"></a>
+<span class="sourceLineNo">382</span> }<a name="line.382"></a>
+<span class="sourceLineNo">383</span> };<a name="line.383"></a>
+<span class="sourceLineNo">384</span><a name="line.384"></a>
+<span class="sourceLineNo">385</span> if (failIfWALExists) {<a name="line.385"></a>
+<span class="sourceLineNo">386</span> final FileStatus[] walFiles = CommonFSUtils.listStatus(fs, walDir, ourFiles);<a name="line.386"></a>
+<span class="sourceLineNo">387</span> if (null != walFiles && 0 != walFiles.length) {<a name="line.387"></a>
+<span class="sourceLineNo">388</span> throw new IOException("Target WAL already exists within directory " + walDir);<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>
+<span class="sourceLineNo">391</span><a name="line.391"></a>
+<span class="sourceLineNo">392</span> // Register listeners. TODO: Should this exist anymore? We have CPs?<a name="line.392"></a>
+<span class="sourceLineNo">393</span> if (listeners != null) {<a name="line.393"></a>
+<span class="sourceLineNo">394</span> for (WALActionsListener i : listeners) {<a name="line.394"></a>
+<span class="sourceLineNo">395</span> registerWALActionsListener(i);<a name="line.395"></a>
+<span class="sourceLineNo">396</span> }<a name="line.396"></a>
+<span class="sourceLineNo">397</span> }<a name="line.397"></a>
+<span class="sourceLineNo">398</span> this.coprocessorHost = new WALCoprocessorHost(this, conf);<a name="line.398"></a>
+<span class="sourceLineNo">399</span><a name="line.399"></a>
+<span class="sourceLineNo">400</span> // Schedule a WAL roll when the WAL is 50% of the HDFS block size. Scheduling at 50% of block<a name="line.400"></a>
+<span class="sourceLineNo">401</span> // size should make it so WAL rolls before we get to the end-of-block (Block transitions cost<a name="line.401"></a>
+<span class="sourceLineNo">402</span> // some latency). In hbase-1 we did this differently. We scheduled a roll when we hit 95% of<a name="line.402"></a>
+<span class="sourceLineNo">403</span> // the block size but experience from the field has it that this was not enough time for the<a name="line.403"></a>
+<span class="sourceLineNo">404</span> // roll to happen before end-of-block. So the new accounting makes WALs of about the same<a name="line.404"></a>
+<span class="sourceLineNo">405</span> // size as those made in hbase-1 (to prevent surprise), we now have default block size as<a name="line.405"></a>
+<span class="sourceLineNo">406</span> // 2 times the DFS default: i.e. 2 * DFS default block size rolling at 50% full will generally<a name="line.406"></a>
+<span class="sourceLineNo">407</span> // make similar size logs to 1 * DFS default block size rolling at 95% full. See HBASE-19148.<a name="line.407"></a>
+<span class="sourceLineNo">408</span> final long blocksize = this.conf.getLong("hbase.regionserver.hlog.blocksize",<a name="line.408"></a>
+<span class="sourceLineNo">409</span> CommonFSUtils.getDefaultBlockSize(this.fs, this.walDir) * 2);<a name="line.409"></a>
+<span class="sourceLineNo">410</span> this.logrollsize =<a name="line.410"></a>
+<span class="sourceLineNo">411</span> (long) (blocksize * conf.getFloat("hbase.regionserver.logroll.multiplier", 0.5f));<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span> boolean maxLogsDefined = conf.get("hbase.regionserver.maxlogs") != null;<a name="line.413"></a>
+<span class="sourceLineNo">414</span> if (maxLogsDefined) {<a name="line.414"></a>
+<span class="sourceLineNo">415</span> LOG.warn("'hbase.regionserver.maxlogs' was deprecated.");<a name="line.415"></a>
+<span class="sourceLineNo">416</span> }<a name="line.416"></a>
+<span class="sourceLineNo">417</span> this.maxLogs = conf.getInt("hbase.regionserver.maxlogs",<a name="line.417"></a>
+<span class="sourceLineNo">418</span> Math.max(32, calculateMaxLogFiles(conf, logrollsize)));<a name="line.418"></a>
+<span class="sourceLineNo">419</span><a name="line.419"></a>
+<span class="sourceLineNo">420</span> LOG.info("WAL configuration: blocksize=" + StringUtils.byteDesc(blocksize) + ", rollsize=" +<a name="line.420"></a>
+<span class="sourceLineNo">421</span> StringUtils.byteDesc(this.logrollsize) + ", prefix=" + this.walFilePrefix + ", suffix=" +<a name="line.421"></a>
+<span class="sourceLineNo">422</span> walFileSuffix + ", logDir=" + this.walDir + ", archiveDir=" + this.walArchiveDir);<a name="line.422"></a>
+<span class="sourceLineNo">423</span> this.slowSyncNs = TimeUnit.MILLISECONDS<a name="line.423"></a>
+<span class="sourceLineNo">424</span> .toNanos(conf.getInt("hbase.regionserver.hlog.slowsync.ms", DEFAULT_SLOW_SYNC_TIME_MS));<a name="line.424"></a>
+<span class="sourceLineNo">425</span> this.walSyncTimeoutNs = TimeUnit.MILLISECONDS<a name="line.425"></a>
+<span class="sourceLineNo">426</span> .toNanos(conf.getLong("hbase.regionserver.hlog.sync.timeout", DEFAULT_WAL_SYNC_TIMEOUT_MS));<a name="line.426"></a>
+<span class="sourceLineNo">427</span> int maxHandlersCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT, 200);<a name="line.427"></a>
+<span class="sourceLineNo">428</span> // Presize our map of SyncFutures by handler objects.<a name="line.428"></a>
+<span class="sourceLineNo">429</span> this.syncFuturesByHandler = new ConcurrentHashMap<>(maxHandlersCount);<a name="line.429"></a>
+<span class="sourceLineNo">430</span> this.implClassName = getClass().getSimpleName();<a name="line.430"></a>
+<span class="sourceLineNo">431</span> }<a name="line.431"></a>
+<span class="sourceLineNo">432</span><a name="line.432"></a>
+<span class="sourceLineNo">433</span> @Override<a name="line.433"></a>
+<span class="sourceLineNo">434</span> public void registerWALActionsListener(WALActionsListener listener) {<a name="line.434"></a>
+<span class="sourceLineNo">435</span> this.listeners.add(listener);<a name="line.435"></a>
<span class="sourceLineNo">436</span> }<a name="line.436"></a>
<span class="sourceLineNo">437</span><a name="line.437"></a>
<span class="sourceLineNo">438</span> @Override<a name="line.438"></a>
-<span class="sourceLineNo">439</span> public void registerWALActionsListener(WALActionsListener listener) {<a name="line.439"></a>
-<span class="sourceLineNo">440</span> this.listeners.add(listener);<a name="line.440"></a>
+<span class="sourceLineNo">439</span> public boolean unregisterWALActionsListener(WALActionsListener listener) {<a name="line.439"></a>
+<span class="sourceLineNo">440</span> return this.listeners.remove(listener);<a name="line.440"></a>
<span class="sourceLineNo">441</span> }<a name="line.441"></a>
<span class="sourceLineNo">442</span><a name="line.442"></a>
<span class="sourceLineNo">443</span> @Override<a name="line.443"></a>
-<span class="sourceLineNo">444</span> public boolean unregisterWALActionsListener(WALActionsListener listener) {<a name="line.444"></a>
-<span class="sourceLineNo">445</span> return this.listeners.remove(listener);<a name="line.445"></a>
+<span class="sourceLineNo">444</span> public WALCoprocessorHost getCoprocessorHost() {<a name="line.444"></a>
+<span class="sourceLineNo">445</span> return coprocessorHost;<a name="line.445"></a>
<span class="sourceLineNo">446</span> }<a name="line.446"></a>
<span class="sourceLineNo">447</span><a name="line.447"></a>
<span class="sourceLineNo">448</span> @Override<a name="line.448"></a>
-<span class="sourceLineNo">449</span> public WALCoprocessorHost getCoprocessorHost() {<a name="line.449"></a>
-<span class="sourceLineNo">450</span> return coprocessorHost;<a name="line.450"></a>
+<span class="sourceLineNo">449</span> public Long startCacheFlush(byte[] encodedRegionName, Set<byte[]> families) {<a name="line.449"></a>
+<span class="sourceLineNo">450</span> return this.sequenceIdAccounting.startCacheFlush(encodedRegionName, families);<a name="line.450"></a>
<span class="sourceLineNo">451</span> }<a name="line.451"></a>
<span class="sourceLineNo">452</span><a name="line.452"></a>
<span class="sourceLineNo">453</span> @Override<a name="line.453"></a>
-<span class="sourceLineNo">454</span> public Long startCacheFlush(byte[] encodedRegionName, Set<byte[]> families) {<a name="line.454"></a>
-<span class="sourceLineNo">455</span> if (!closeBarrier.beginOp()) {<a name="line.455"></a>
-<span class="sourceLineNo">456</span> LOG.info("Flush not started for " + Bytes.toString(encodedRegionName) + "; server closing.");<a name="line.456"></a>
-<span class="sourceLineNo">457</span> return null;<a name="line.457"></a>
-<span class="sourceLineNo">458</span> }<a name="line.458"></a>
-<span c
<TRUNCATED>