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 2018/03/20 14:53:36 UTC
[04/18] hbase-site git commit: Published site at
2a3f4a0a4eb7bb67985050b0e007576c468f217e.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/648c9317/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.html
index 7f89c08..9ee12ef 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.html
@@ -29,906 +29,911 @@
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.lang.Thread.UncaughtExceptionHandler;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.ConcurrentModificationException;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.HashMap;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.HashSet;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.Map;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.Set;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.SortedMap;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.concurrent.BlockingQueue;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.concurrent.DelayQueue;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.concurrent.Delayed;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.concurrent.ThreadFactory;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.util.concurrent.TimeUnit;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.util.concurrent.atomic.LongAdder;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.38"></a>
-<span class="sourceLineNo">039</span><a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.conf.Configuration;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.DroppedSnapshotException;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HConstants;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.HRegion.FlushResult;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.util.StringUtils.TraditionalBinaryPrefix;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.htrace.core.TraceScope;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.slf4j.Logger;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.slf4j.LoggerFactory;<a name="line.57"></a>
-<span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span>/**<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * Thread that flushes cache on request<a name="line.60"></a>
-<span class="sourceLineNo">061</span> *<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * NOTE: This class extends Thread rather than Chore because the sleep time<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * can be interrupted when there is something to do, rather than the Chore<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * sleep time which is invariant.<a name="line.64"></a>
-<span class="sourceLineNo">065</span> *<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * @see FlushRequester<a name="line.66"></a>
-<span class="sourceLineNo">067</span> */<a name="line.67"></a>
-<span class="sourceLineNo">068</span>@InterfaceAudience.Private<a name="line.68"></a>
-<span class="sourceLineNo">069</span>class MemStoreFlusher implements FlushRequester {<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private static final Logger LOG = LoggerFactory.getLogger(MemStoreFlusher.class);<a name="line.70"></a>
-<span class="sourceLineNo">071</span><a name="line.71"></a>
-<span class="sourceLineNo">072</span> private Configuration conf;<a name="line.72"></a>
-<span class="sourceLineNo">073</span> // These two data members go together. Any entry in the one must have<a name="line.73"></a>
-<span class="sourceLineNo">074</span> // a corresponding entry in the other.<a name="line.74"></a>
-<span class="sourceLineNo">075</span> private final BlockingQueue<FlushQueueEntry> flushQueue = new DelayQueue<>();<a name="line.75"></a>
-<span class="sourceLineNo">076</span> private final Map<Region, FlushRegionEntry> regionsInQueue = new HashMap<>();<a name="line.76"></a>
-<span class="sourceLineNo">077</span> private AtomicBoolean wakeupPending = new AtomicBoolean();<a name="line.77"></a>
-<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span> private final long threadWakeFrequency;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> private final HRegionServer server;<a name="line.80"></a>
-<span class="sourceLineNo">081</span> private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private final Object blockSignal = new Object();<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> private long blockingWaitTime;<a name="line.84"></a>
-<span class="sourceLineNo">085</span> private final LongAdder updatesBlockedMsHighWater = new LongAdder();<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> private final FlushHandler[] flushHandlers;<a name="line.87"></a>
-<span class="sourceLineNo">088</span> private List<FlushRequestListener> flushRequestListeners = new ArrayList<>(1);<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> private FlushType flushType;<a name="line.90"></a>
-<span class="sourceLineNo">091</span><a name="line.91"></a>
-<span class="sourceLineNo">092</span> /**<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * Singleton instance inserted into flush queue used for signaling.<a name="line.93"></a>
-<span class="sourceLineNo">094</span> */<a name="line.94"></a>
-<span class="sourceLineNo">095</span> private static final FlushQueueEntry WAKEUPFLUSH_INSTANCE = new FlushQueueEntry() {<a name="line.95"></a>
-<span class="sourceLineNo">096</span> @Override<a name="line.96"></a>
-<span class="sourceLineNo">097</span> public long getDelay(TimeUnit unit) {<a name="line.97"></a>
-<span class="sourceLineNo">098</span> return 0;<a name="line.98"></a>
-<span class="sourceLineNo">099</span> }<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span> @Override<a name="line.101"></a>
-<span class="sourceLineNo">102</span> public int compareTo(Delayed o) {<a name="line.102"></a>
-<span class="sourceLineNo">103</span> return -1;<a name="line.103"></a>
-<span class="sourceLineNo">104</span> }<a name="line.104"></a>
-<span class="sourceLineNo">105</span><a name="line.105"></a>
-<span class="sourceLineNo">106</span> @Override<a name="line.106"></a>
-<span class="sourceLineNo">107</span> public boolean equals(Object obj) {<a name="line.107"></a>
-<span class="sourceLineNo">108</span> return obj == this;<a name="line.108"></a>
-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> @Override<a name="line.111"></a>
-<span class="sourceLineNo">112</span> public int hashCode() {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> return 42;<a name="line.113"></a>
-<span class="sourceLineNo">114</span> }<a name="line.114"></a>
-<span class="sourceLineNo">115</span> };<a name="line.115"></a>
-<span class="sourceLineNo">116</span><a name="line.116"></a>
+<span class="sourceLineNo">024</span>import java.util.Collection;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.ConcurrentModificationException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.HashSet;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.Set;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.SortedMap;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.concurrent.BlockingQueue;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.util.concurrent.DelayQueue;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import java.util.concurrent.Delayed;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import java.util.concurrent.ThreadFactory;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import java.util.concurrent.TimeUnit;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import java.util.concurrent.atomic.LongAdder;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.DroppedSnapshotException;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HConstants;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.HRegion.FlushResult;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.util.StringUtils.TraditionalBinaryPrefix;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.htrace.core.TraceScope;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.slf4j.Logger;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.slf4j.LoggerFactory;<a name="line.58"></a>
+<span class="sourceLineNo">059</span><a name="line.59"></a>
+<span class="sourceLineNo">060</span>/**<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * Thread that flushes cache on request<a name="line.61"></a>
+<span class="sourceLineNo">062</span> *<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * NOTE: This class extends Thread rather than Chore because the sleep time<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * can be interrupted when there is something to do, rather than the Chore<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * sleep time which is invariant.<a name="line.65"></a>
+<span class="sourceLineNo">066</span> *<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * @see FlushRequester<a name="line.67"></a>
+<span class="sourceLineNo">068</span> */<a name="line.68"></a>
+<span class="sourceLineNo">069</span>@InterfaceAudience.Private<a name="line.69"></a>
+<span class="sourceLineNo">070</span>class MemStoreFlusher implements FlushRequester {<a name="line.70"></a>
+<span class="sourceLineNo">071</span> private static final Logger LOG = LoggerFactory.getLogger(MemStoreFlusher.class);<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span> private Configuration conf;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> // These two data members go together. Any entry in the one must have<a name="line.74"></a>
+<span class="sourceLineNo">075</span> // a corresponding entry in the other.<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private final BlockingQueue<FlushQueueEntry> flushQueue = new DelayQueue<>();<a name="line.76"></a>
+<span class="sourceLineNo">077</span> private final Map<Region, FlushRegionEntry> regionsInQueue = new HashMap<>();<a name="line.77"></a>
+<span class="sourceLineNo">078</span> private AtomicBoolean wakeupPending = new AtomicBoolean();<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span> private final long threadWakeFrequency;<a name="line.80"></a>
+<span class="sourceLineNo">081</span> private final HRegionServer server;<a name="line.81"></a>
+<span class="sourceLineNo">082</span> private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();<a name="line.82"></a>
+<span class="sourceLineNo">083</span> private final Object blockSignal = new Object();<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> private long blockingWaitTime;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> private final LongAdder updatesBlockedMsHighWater = new LongAdder();<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span> private final FlushHandler[] flushHandlers;<a name="line.88"></a>
+<span class="sourceLineNo">089</span> private List<FlushRequestListener> flushRequestListeners = new ArrayList<>(1);<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> private FlushType flushType;<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span> /**<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * Singleton instance inserted into flush queue used for signaling.<a name="line.94"></a>
+<span class="sourceLineNo">095</span> */<a name="line.95"></a>
+<span class="sourceLineNo">096</span> private static final FlushQueueEntry WAKEUPFLUSH_INSTANCE = new FlushQueueEntry() {<a name="line.96"></a>
+<span class="sourceLineNo">097</span> @Override<a name="line.97"></a>
+<span class="sourceLineNo">098</span> public long getDelay(TimeUnit unit) {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> return 0;<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> @Override<a name="line.102"></a>
+<span class="sourceLineNo">103</span> public int compareTo(Delayed o) {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> return -1;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> }<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
+<span class="sourceLineNo">107</span> @Override<a name="line.107"></a>
+<span class="sourceLineNo">108</span> public boolean equals(Object obj) {<a name="line.108"></a>
+<span class="sourceLineNo">109</span> return obj == this;<a name="line.109"></a>
+<span class="sourceLineNo">110</span> }<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span> @Override<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public int hashCode() {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> return 42;<a name="line.114"></a>
+<span class="sourceLineNo">115</span> }<a name="line.115"></a>
+<span class="sourceLineNo">116</span> };<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> /**<a name="line.118"></a>
-<span class="sourceLineNo">119</span> * @param conf<a name="line.119"></a>
-<span class="sourceLineNo">120</span> * @param server<a name="line.120"></a>
-<span class="sourceLineNo">121</span> */<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public MemStoreFlusher(final Configuration conf,<a name="line.122"></a>
-<span class="sourceLineNo">123</span> final HRegionServer server) {<a name="line.123"></a>
-<span class="sourceLineNo">124</span> super();<a name="line.124"></a>
-<span class="sourceLineNo">125</span> this.conf = conf;<a name="line.125"></a>
-<span class="sourceLineNo">126</span> this.server = server;<a name="line.126"></a>
-<span class="sourceLineNo">127</span> this.threadWakeFrequency =<a name="line.127"></a>
-<span class="sourceLineNo">128</span> conf.getLong(HConstants.THREAD_WAKE_FREQUENCY, 10 * 1000);<a name="line.128"></a>
-<span class="sourceLineNo">129</span> this.blockingWaitTime = conf.getInt("hbase.hstore.blockingWaitTime",<a name="line.129"></a>
-<span class="sourceLineNo">130</span> 90000);<a name="line.130"></a>
-<span class="sourceLineNo">131</span> int handlerCount = conf.getInt("hbase.hstore.flusher.count", 2);<a name="line.131"></a>
-<span class="sourceLineNo">132</span> this.flushHandlers = new FlushHandler[handlerCount];<a name="line.132"></a>
-<span class="sourceLineNo">133</span> LOG.info("globalMemStoreLimit="<a name="line.133"></a>
-<span class="sourceLineNo">134</span> + TraditionalBinaryPrefix<a name="line.134"></a>
-<span class="sourceLineNo">135</span> .long2String(this.server.getRegionServerAccounting().getGlobalMemStoreLimit(), "", 1)<a name="line.135"></a>
-<span class="sourceLineNo">136</span> + ", globalMemStoreLimitLowMark="<a name="line.136"></a>
-<span class="sourceLineNo">137</span> + TraditionalBinaryPrefix.long2String(<a name="line.137"></a>
-<span class="sourceLineNo">138</span> this.server.getRegionServerAccounting().getGlobalMemStoreLimitLowMark(), "", 1)<a name="line.138"></a>
-<span class="sourceLineNo">139</span> + ", Offheap="<a name="line.139"></a>
-<span class="sourceLineNo">140</span> + (this.server.getRegionServerAccounting().isOffheap()));<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> public LongAdder getUpdatesBlockedMsHighWater() {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> return this.updatesBlockedMsHighWater;<a name="line.144"></a>
-<span class="sourceLineNo">145</span> }<a name="line.145"></a>
-<span class="sourceLineNo">146</span><a name="line.146"></a>
-<span class="sourceLineNo">147</span> public void setFlushType(FlushType flushType) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> this.flushType = flushType;<a name="line.148"></a>
-<span class="sourceLineNo">149</span> }<a name="line.149"></a>
-<span class="sourceLineNo">150</span><a name="line.150"></a>
-<span class="sourceLineNo">151</span> /**<a name="line.151"></a>
-<span class="sourceLineNo">152</span> * The memstore across all regions has exceeded the low water mark. Pick<a name="line.152"></a>
-<span class="sourceLineNo">153</span> * one region to flush and flush it synchronously (this is called from the<a name="line.153"></a>
-<span class="sourceLineNo">154</span> * flush thread)<a name="line.154"></a>
-<span class="sourceLineNo">155</span> * @return true if successful<a name="line.155"></a>
-<span class="sourceLineNo">156</span> */<a name="line.156"></a>
-<span class="sourceLineNo">157</span> private boolean flushOneForGlobalPressure() {<a name="line.157"></a>
-<span class="sourceLineNo">158</span> SortedMap<Long, HRegion> regionsBySize = null;<a name="line.158"></a>
-<span class="sourceLineNo">159</span> switch(flushType) {<a name="line.159"></a>
-<span class="sourceLineNo">160</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.160"></a>
-<span class="sourceLineNo">161</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.161"></a>
-<span class="sourceLineNo">162</span> regionsBySize = server.getCopyOfOnlineRegionsSortedByOffHeapSize();<a name="line.162"></a>
-<span class="sourceLineNo">163</span> break;<a name="line.163"></a>
-<span class="sourceLineNo">164</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.164"></a>
-<span class="sourceLineNo">165</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.165"></a>
-<span class="sourceLineNo">166</span> default:<a name="line.166"></a>
-<span class="sourceLineNo">167</span> regionsBySize = server.getCopyOfOnlineRegionsSortedByOnHeapSize();<a name="line.167"></a>
-<span class="sourceLineNo">168</span> }<a name="line.168"></a>
-<span class="sourceLineNo">169</span> Set<HRegion> excludedRegions = new HashSet<>();<a name="line.169"></a>
-<span class="sourceLineNo">170</span><a name="line.170"></a>
-<span class="sourceLineNo">171</span> double secondaryMultiplier<a name="line.171"></a>
-<span class="sourceLineNo">172</span> = ServerRegionReplicaUtil.getRegionReplicaStoreFileRefreshMultiplier(conf);<a name="line.172"></a>
-<span class="sourceLineNo">173</span><a name="line.173"></a>
-<span class="sourceLineNo">174</span> boolean flushedOne = false;<a name="line.174"></a>
-<span class="sourceLineNo">175</span> while (!flushedOne) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> // Find the biggest region that doesn't have too many storefiles (might be null!)<a name="line.176"></a>
-<span class="sourceLineNo">177</span> HRegion bestFlushableRegion =<a name="line.177"></a>
-<span class="sourceLineNo">178</span> getBiggestMemStoreRegion(regionsBySize, excludedRegions, true);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> // Find the biggest region, total, even if it might have too many flushes.<a name="line.179"></a>
-<span class="sourceLineNo">180</span> HRegion bestAnyRegion = getBiggestMemStoreRegion(regionsBySize, excludedRegions, false);<a name="line.180"></a>
-<span class="sourceLineNo">181</span> // Find the biggest region that is a secondary region<a name="line.181"></a>
-<span class="sourceLineNo">182</span> HRegion bestRegionReplica = getBiggestMemStoreOfRegionReplica(regionsBySize, excludedRegions);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> if (bestAnyRegion == null) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> // If bestAnyRegion is null, assign replica. It may be null too. Next step is check for null<a name="line.184"></a>
-<span class="sourceLineNo">185</span> bestAnyRegion = bestRegionReplica;<a name="line.185"></a>
-<span class="sourceLineNo">186</span> }<a name="line.186"></a>
-<span class="sourceLineNo">187</span> if (bestAnyRegion == null) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> LOG.error("Above memory mark but there are no flushable regions!");<a name="line.188"></a>
-<span class="sourceLineNo">189</span> return false;<a name="line.189"></a>
-<span class="sourceLineNo">190</span> }<a name="line.190"></a>
-<span class="sourceLineNo">191</span><a name="line.191"></a>
-<span class="sourceLineNo">192</span> HRegion regionToFlush;<a name="line.192"></a>
-<span class="sourceLineNo">193</span> long bestAnyRegionSize;<a name="line.193"></a>
-<span class="sourceLineNo">194</span> long bestFlushableRegionSize;<a name="line.194"></a>
-<span class="sourceLineNo">195</span> switch(flushType) {<a name="line.195"></a>
-<span class="sourceLineNo">196</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.196"></a>
-<span class="sourceLineNo">197</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.197"></a>
-<span class="sourceLineNo">198</span> bestAnyRegionSize = bestAnyRegion.getMemStoreOffHeapSize();<a name="line.198"></a>
-<span class="sourceLineNo">199</span> bestFlushableRegionSize = getMemStoreOffHeapSize(bestFlushableRegion);<a name="line.199"></a>
-<span class="sourceLineNo">200</span> break;<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.202"></a>
-<span class="sourceLineNo">203</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.203"></a>
-<span class="sourceLineNo">204</span> bestAnyRegionSize = bestAnyRegion.getMemStoreHeapSize();<a name="line.204"></a>
-<span class="sourceLineNo">205</span> bestFlushableRegionSize = getMemStoreHeapSize(bestFlushableRegion);<a name="line.205"></a>
-<span class="sourceLineNo">206</span> break;<a name="line.206"></a>
-<span class="sourceLineNo">207</span><a name="line.207"></a>
-<span class="sourceLineNo">208</span> default:<a name="line.208"></a>
-<span class="sourceLineNo">209</span> bestAnyRegionSize = bestAnyRegion.getMemStoreDataSize();<a name="line.209"></a>
-<span class="sourceLineNo">210</span> bestFlushableRegionSize = getMemStoreDataSize(bestFlushableRegion);<a name="line.210"></a>
-<span class="sourceLineNo">211</span> }<a name="line.211"></a>
-<span class="sourceLineNo">212</span> if (bestAnyRegionSize > 2 * bestFlushableRegionSize) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> // Even if it's not supposed to be flushed, pick a region if it's more than twice<a name="line.213"></a>
-<span class="sourceLineNo">214</span> // as big as the best flushable one - otherwise when we're under pressure we make<a name="line.214"></a>
-<span class="sourceLineNo">215</span> // lots of little flushes and cause lots of compactions, etc, which just makes<a name="line.215"></a>
-<span class="sourceLineNo">216</span> // life worse!<a name="line.216"></a>
-<span class="sourceLineNo">217</span> if (LOG.isDebugEnabled()) {<a name="line.217"></a>
-<span class="sourceLineNo">218</span> LOG.debug("Under global heap pressure: " + "Region "<a name="line.218"></a>
-<span class="sourceLineNo">219</span> + bestAnyRegion.getRegionInfo().getRegionNameAsString()<a name="line.219"></a>
-<span class="sourceLineNo">220</span> + " has too many " + "store files, but is "<a name="line.220"></a>
-<span class="sourceLineNo">221</span> + TraditionalBinaryPrefix.long2String(bestAnyRegionSize, "", 1)<a name="line.221"></a>
-<span class="sourceLineNo">222</span> + " vs best flushable region's "<a name="line.222"></a>
-<span class="sourceLineNo">223</span> + TraditionalBinaryPrefix.long2String(<a name="line.223"></a>
-<span class="sourceLineNo">224</span> bestFlushableRegionSize, "", 1)<a name="line.224"></a>
-<span class="sourceLineNo">225</span> + ". Choosing the bigger.");<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> regionToFlush = bestAnyRegion;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> } else {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> if (bestFlushableRegion == null) {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> regionToFlush = bestAnyRegion;<a name="line.230"></a>
-<span class="sourceLineNo">231</span> } else {<a name="line.231"></a>
-<span class="sourceLineNo">232</span> regionToFlush = bestFlushableRegion;<a name="line.232"></a>
-<span class="sourceLineNo">233</span> }<a name="line.233"></a>
-<span class="sourceLineNo">234</span> }<a name="line.234"></a>
-<span class="sourceLineNo">235</span><a name="line.235"></a>
-<span class="sourceLineNo">236</span> long regionToFlushSize;<a name="line.236"></a>
-<span class="sourceLineNo">237</span> long bestRegionReplicaSize;<a name="line.237"></a>
-<span class="sourceLineNo">238</span> switch(flushType) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.239"></a>
-<span class="sourceLineNo">240</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.240"></a>
-<span class="sourceLineNo">241</span> regionToFlushSize = regionToFlush.getMemStoreOffHeapSize();<a name="line.241"></a>
-<span class="sourceLineNo">242</span> bestRegionReplicaSize = getMemStoreOffHeapSize(bestRegionReplica);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> break;<a name="line.243"></a>
-<span class="sourceLineNo">244</span><a name="line.244"></a>
-<span class="sourceLineNo">245</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.245"></a>
-<span class="sourceLineNo">246</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.246"></a>
-<span class="sourceLineNo">247</span> regionToFlushSize = regionToFlush.getMemStoreHeapSize();<a name="line.247"></a>
-<span class="sourceLineNo">248</span> bestRegionReplicaSize = getMemStoreHeapSize(bestRegionReplica);<a name="line.248"></a>
-<span class="sourceLineNo">249</span> break;<a name="line.249"></a>
-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> default:<a name="line.251"></a>
-<span class="sourceLineNo">252</span> regionToFlushSize = regionToFlush.getMemStoreDataSize();<a name="line.252"></a>
-<span class="sourceLineNo">253</span> bestRegionReplicaSize = getMemStoreDataSize(bestRegionReplica);<a name="line.253"></a>
-<span class="sourceLineNo">254</span> }<a name="line.254"></a>
-<span class="sourceLineNo">255</span><a name="line.255"></a>
-<span class="sourceLineNo">256</span> Preconditions.checkState(<a name="line.256"></a>
-<span class="sourceLineNo">257</span> (regionToFlush != null && regionToFlushSize > 0) || bestRegionReplicaSize > 0);<a name="line.257"></a>
-<span class="sourceLineNo">258</span><a name="line.258"></a>
-<span class="sourceLineNo">259</span> if (regionToFlush == null ||<a name="line.259"></a>
-<span class="sourceLineNo">260</span> (bestRegionReplica != null &&<a name="line.260"></a>
-<span class="sourceLineNo">261</span> ServerRegionReplicaUtil.isRegionReplicaStoreFileRefreshEnabled(conf) &&<a name="line.261"></a>
-<span class="sourceLineNo">262</span> (bestRegionReplicaSize > secondaryMultiplier * regionToFlushSize))) {<a name="line.262"></a>
-<span class="sourceLineNo">263</span> LOG.info("Refreshing storefiles of region " + bestRegionReplica +<a name="line.263"></a>
-<span class="sourceLineNo">264</span> " due to global heap pressure. Total memstore off heap size=" +<a name="line.264"></a>
-<span class="sourceLineNo">265</span> TraditionalBinaryPrefix.long2String(<a name="line.265"></a>
-<span class="sourceLineNo">266</span> server.getRegionServerAccounting().getGlobalMemStoreOffHeapSize(), "", 1) +<a name="line.266"></a>
-<span class="sourceLineNo">267</span> " memstore heap size=" + TraditionalBinaryPrefix.long2String(<a name="line.267"></a>
-<span class="sourceLineNo">268</span> server.getRegionServerAccounting().getGlobalMemStoreHeapSize(), "", 1));<a name="line.268"></a>
-<span class="sourceLineNo">269</span> flushedOne = refreshStoreFilesAndReclaimMemory(bestRegionReplica);<a name="line.269"></a>
-<span class="sourceLineNo">270</span> if (!flushedOne) {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> LOG.info("Excluding secondary region " + bestRegionReplica +<a name="line.271"></a>
-<span class="sourceLineNo">272</span> " - trying to find a different region to refresh files.");<a name="line.272"></a>
-<span class="sourceLineNo">273</span> excludedRegions.add(bestRegionReplica);<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span> } else {<a name="line.275"></a>
-<span class="sourceLineNo">276</span> LOG.info("Flush of region " + regionToFlush + " due to global heap pressure. " +<a name="line.276"></a>
-<span class="sourceLineNo">277</span> "Flush type=" + flushType.toString() +<a name="line.277"></a>
-<span class="sourceLineNo">278</span> "Total Memstore Heap size=" +<a name="line.278"></a>
-<span class="sourceLineNo">279</span> TraditionalBinaryPrefix.long2String(<a name="line.279"></a>
-<span class="sourceLineNo">280</span> server.getRegionServerAccounting().getGlobalMemStoreHeapSize(), "", 1) +<a name="line.280"></a>
-<span class="sourceLineNo">281</span> "Total Memstore Off-Heap size=" +<a name="line.281"></a>
-<span class="sourceLineNo">282</span> TraditionalBinaryPrefix.long2String(<a name="line.282"></a>
-<span class="sourceLineNo">283</span> server.getRegionServerAccounting().getGlobalMemStoreOffHeapSize(), "", 1) +<a name="line.283"></a>
-<span class="sourceLineNo">284</span> ", Region memstore size=" +<a name="line.284"></a>
-<span class="sourceLineNo">285</span> TraditionalBinaryPrefix.long2String(regionToFlushSize, "", 1));<a name="line.285"></a>
-<span class="sourceLineNo">286</span> flushedOne = flushRegion(regionToFlush, true, false, FlushLifeCycleTracker.DUMMY);<a name="line.286"></a>
-<span class="sourceLineNo">287</span><a name="line.287"></a>
-<span class="sourceLineNo">288</span> if (!flushedOne) {<a name="line.288"></a>
-<span class="sourceLineNo">289</span> LOG.info("Excluding unflushable region " + regionToFlush +<a name="line.289"></a>
-<span class="sourceLineNo">290</span> " - trying to find a different region to flush.");<a name="line.290"></a>
-<span class="sourceLineNo">291</span> excludedRegions.add(regionToFlush);<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 name="line.294"></a>
-<span class="sourceLineNo">295</span> return true;<a name="line.295"></a>
-<span class="sourceLineNo">296</span> }<a name="line.296"></a>
-<span class="sourceLineNo">297</span><a name="line.297"></a>
-<span class="sourceLineNo">298</span> /**<a name="line.298"></a>
-<span class="sourceLineNo">299</span> * @return Return memstore offheap size or null if <code>r</code> is null<a name="line.299"></a>
-<span class="sourceLineNo">300</span> */<a name="line.300"></a>
-<span class="sourceLineNo">301</span> private static long getMemStoreOffHeapSize(HRegion r) {<a name="line.301"></a>
-<span class="sourceLineNo">302</span> return r == null? 0: r.getMemStoreOffHeapSize();<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> /**<a name="line.305"></a>
-<span class="sourceLineNo">306</span> * @return Return memstore heap size or null if <code>r</code> is null<a name="line.306"></a>
-<span class="sourceLineNo">307</span> */<a name="line.307"></a>
-<span class="sourceLineNo">308</span> private static long getMemStoreHeapSize(HRegion r) {<a name="line.308"></a>
-<span class="sourceLineNo">309</span> return r == null? 0: r.getMemStoreHeapSize();<a name="line.309"></a>
-<span class="sourceLineNo">310</span> }<a name="line.310"></a>
-<span class="sourceLineNo">311</span><a name="line.311"></a>
-<span class="sourceLineNo">312</span> /**<a name="line.312"></a>
-<span class="sourceLineNo">313</span> * @return Return memstore data size or null if <code>r</code> is null<a name="line.313"></a>
-<span class="sourceLineNo">314</span> */<a name="line.314"></a>
-<span class="sourceLineNo">315</span> private static long getMemStoreDataSize(HRegion r) {<a name="line.315"></a>
-<span class="sourceLineNo">316</span> return r == null? 0: r.getMemStoreDataSize();<a name="line.316"></a>
-<span class="sourceLineNo">317</span> }<a name="line.317"></a>
-<span class="sourceLineNo">318</span><a name="line.318"></a>
-<span class="sourceLineNo">319</span> private class FlushHandler extends HasThread {<a name="line.319"></a>
-<span class="sourceLineNo">320</span><a name="line.320"></a>
-<span class="sourceLineNo">321</span> private FlushHandler(String name) {<a name="line.321"></a>
-<span class="sourceLineNo">322</span> super(name);<a name="line.322"></a>
-<span class="sourceLineNo">323</span> }<a name="line.323"></a>
-<span class="sourceLineNo">324</span><a name="line.324"></a>
-<span class="sourceLineNo">325</span> @Override<a name="line.325"></a>
-<span class="sourceLineNo">326</span> public void run() {<a name="line.326"></a>
-<span class="sourceLineNo">327</span> while (!server.isStopped()) {<a name="line.327"></a>
-<span class="sourceLineNo">328</span> FlushQueueEntry fqe = null;<a name="line.328"></a>
-<span class="sourceLineNo">329</span> try {<a name="line.329"></a>
-<span class="sourceLineNo">330</span> wakeupPending.set(false); // allow someone to wake us up again<a name="line.330"></a>
-<span class="sourceLineNo">331</span> fqe = flushQueue.poll(threadWakeFrequency, TimeUnit.MILLISECONDS);<a name="line.331"></a>
-<span class="sourceLineNo">332</span> if (fqe == null || fqe == WAKEUPFLUSH_INSTANCE) {<a name="line.332"></a>
-<span class="sourceLineNo">333</span> FlushType type = isAboveLowWaterMark();<a name="line.333"></a>
-<span class="sourceLineNo">334</span> if (type != FlushType.NORMAL) {<a name="line.334"></a>
-<span class="sourceLineNo">335</span> LOG.debug("Flush thread woke up because memory above low water="<a name="line.335"></a>
-<span class="sourceLineNo">336</span> + TraditionalBinaryPrefix.long2String(<a name="line.336"></a>
-<span class="sourceLineNo">337</span> server.getRegionServerAccounting().getGlobalMemStoreLimitLowMark(), "", 1));<a name="line.337"></a>
-<span class="sourceLineNo">338</span> // For offheap memstore, even if the lower water mark was breached due to heap overhead<a name="line.338"></a>
-<span class="sourceLineNo">339</span> // we still select the regions based on the region's memstore data size.<a name="line.339"></a>
-<span class="sourceLineNo">340</span> // TODO : If we want to decide based on heap over head it can be done without tracking<a name="line.340"></a>
-<span class="sourceLineNo">341</span> // it per region.<a name="line.341"></a>
-<span class="sourceLineNo">342</span> if (!flushOneForGlobalPressure()) {<a name="line.342"></a>
-<span class="sourceLineNo">343</span> // Wasn't able to flush any region, but we're above low water mark<a name="line.343"></a>
-<span class="sourceLineNo">344</span> // This is unlikely to happen, but might happen when closing the<a name="line.344"></a>
-<span class="sourceLineNo">345</span> // entire server - another thread is flushing regions. We'll just<a name="line.345"></a>
-<span class="sourceLineNo">346</span> // sleep a little bit to avoid spinning, and then pretend that<a name="line.346"></a>
-<span class="sourceLineNo">347</span> // we flushed one, so anyone blocked will check again<a name="line.347"></a>
-<span class="sourceLineNo">348</span> Thread.sleep(1000);<a name="line.348"></a>
-<span class="sourceLineNo">349</span> wakeUpIfBlocking();<a name="line.349"></a>
-<span class="sourceLineNo">350</span> }<a name="line.350"></a>
-<span class="sourceLineNo">351</span> // Enqueue another one of these tokens so we'll wake up again<a name="line.351"></a>
-<span class="sourceLineNo">352</span> wakeupFlushThread();<a name="line.352"></a>
-<span class="sourceLineNo">353</span> }<a name="line.353"></a>
-<span class="sourceLineNo">354</span> continue;<a name="line.354"></a>
-<span class="sourceLineNo">355</span> }<a name="line.355"></a>
-<span class="sourceLineNo">356</span> FlushRegionEntry fre = (FlushRegionEntry) fqe;<a name="line.356"></a>
-<span class="sourceLineNo">357</span> if (!flushRegion(fre)) {<a name="line.357"></a>
-<span class="sourceLineNo">358</span> break;<a name="line.358"></a>
-<span class="sourceLineNo">359</span> }<a name="line.359"></a>
-<span class="sourceLineNo">360</span> } catch (InterruptedException ex) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span> continue;<a name="line.361"></a>
-<span class="sourceLineNo">362</span> } catch (ConcurrentModificationException ex) {<a name="line.362"></a>
-<span class="sourceLineNo">363</span> continue;<a name="line.363"></a>
-<span class="sourceLineNo">364</span> } catch (Exception ex) {<a name="line.364"></a>
-<span class="sourceLineNo">365</span> LOG.error("Cache flusher failed for entry " + fqe, ex);<a name="line.365"></a>
-<span class="sourceLineNo">366</span> if (!server.checkFileSystem()) {<a name="line.366"></a>
-<span class="sourceLineNo">367</span> break;<a name="line.367"></a>
-<span class="sourceLineNo">368</span> }<a name="line.368"></a>
-<span class="sourceLineNo">369</span> }<a name="line.369"></a>
-<span class="sourceLineNo">370</span> }<a name="line.370"></a>
-<span class="sourceLineNo">371</span> synchronized (regionsInQueue) {<a name="line.371"></a>
-<span class="sourceLineNo">372</span> regionsInQueue.clear();<a name="line.372"></a>
-<span class="sourceLineNo">373</span> flushQueue.clear();<a name="line.373"></a>
-<span class="sourceLineNo">374</span> }<a name="line.374"></a>
-<span class="sourceLineNo">375</span><a name="line.375"></a>
-<span class="sourceLineNo">376</span> // Signal anyone waiting, so they see the close flag<a name="line.376"></a>
-<span class="sourceLineNo">377</span> wakeUpIfBlocking();<a name="line.377"></a>
-<span class="sourceLineNo">378</span> LOG.info(getName() + " exiting");<a name="line.378"></a>
-<span class="sourceLineNo">379</span> }<a name="line.379"></a>
-<span class="sourceLineNo">380</span> }<a name="line.380"></a>
-<span class="sourceLineNo">381</span><a name="line.381"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span> /**<a name="line.119"></a>
+<span class="sourceLineNo">120</span> * @param conf<a name="line.120"></a>
+<span class="sourceLineNo">121</span> * @param server<a name="line.121"></a>
+<span class="sourceLineNo">122</span> */<a name="line.122"></a>
+<span class="sourceLineNo">123</span> public MemStoreFlusher(final Configuration conf,<a name="line.123"></a>
+<span class="sourceLineNo">124</span> final HRegionServer server) {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> super();<a name="line.125"></a>
+<span class="sourceLineNo">126</span> this.conf = conf;<a name="line.126"></a>
+<span class="sourceLineNo">127</span> this.server = server;<a name="line.127"></a>
+<span class="sourceLineNo">128</span> this.threadWakeFrequency =<a name="line.128"></a>
+<span class="sourceLineNo">129</span> conf.getLong(HConstants.THREAD_WAKE_FREQUENCY, 10 * 1000);<a name="line.129"></a>
+<span class="sourceLineNo">130</span> this.blockingWaitTime = conf.getInt("hbase.hstore.blockingWaitTime",<a name="line.130"></a>
+<span class="sourceLineNo">131</span> 90000);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> int handlerCount = conf.getInt("hbase.hstore.flusher.count", 2);<a name="line.132"></a>
+<span class="sourceLineNo">133</span> this.flushHandlers = new FlushHandler[handlerCount];<a name="line.133"></a>
+<span class="sourceLineNo">134</span> LOG.info("globalMemStoreLimit="<a name="line.134"></a>
+<span class="sourceLineNo">135</span> + TraditionalBinaryPrefix<a name="line.135"></a>
+<span class="sourceLineNo">136</span> .long2String(this.server.getRegionServerAccounting().getGlobalMemStoreLimit(), "", 1)<a name="line.136"></a>
+<span class="sourceLineNo">137</span> + ", globalMemStoreLimitLowMark="<a name="line.137"></a>
+<span class="sourceLineNo">138</span> + TraditionalBinaryPrefix.long2String(<a name="line.138"></a>
+<span class="sourceLineNo">139</span> this.server.getRegionServerAccounting().getGlobalMemStoreLimitLowMark(), "", 1)<a name="line.139"></a>
+<span class="sourceLineNo">140</span> + ", Offheap="<a name="line.140"></a>
+<span class="sourceLineNo">141</span> + (this.server.getRegionServerAccounting().isOffheap()));<a name="line.141"></a>
+<span class="sourceLineNo">142</span> }<a name="line.142"></a>
+<span class="sourceLineNo">143</span><a name="line.143"></a>
+<span class="sourceLineNo">144</span> public LongAdder getUpdatesBlockedMsHighWater() {<a name="line.144"></a>
+<span class="sourceLineNo">145</span> return this.updatesBlockedMsHighWater;<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> public void setFlushType(FlushType flushType) {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> this.flushType = flushType;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> }<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> * The memstore across all regions has exceeded the low water mark. Pick<a name="line.153"></a>
+<span class="sourceLineNo">154</span> * one region to flush and flush it synchronously (this is called from the<a name="line.154"></a>
+<span class="sourceLineNo">155</span> * flush thread)<a name="line.155"></a>
+<span class="sourceLineNo">156</span> * @return true if successful<a name="line.156"></a>
+<span class="sourceLineNo">157</span> */<a name="line.157"></a>
+<span class="sourceLineNo">158</span> private boolean flushOneForGlobalPressure() {<a name="line.158"></a>
+<span class="sourceLineNo">159</span> SortedMap<Long, Collection<HRegion>> regionsBySize = null;<a name="line.159"></a>
+<span class="sourceLineNo">160</span> switch(flushType) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.161"></a>
+<span class="sourceLineNo">162</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.162"></a>
+<span class="sourceLineNo">163</span> regionsBySize = server.getCopyOfOnlineRegionsSortedByOffHeapSize();<a name="line.163"></a>
+<span class="sourceLineNo">164</span> break;<a name="line.164"></a>
+<span class="sourceLineNo">165</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.165"></a>
+<span class="sourceLineNo">166</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.166"></a>
+<span class="sourceLineNo">167</span> default:<a name="line.167"></a>
+<span class="sourceLineNo">168</span> regionsBySize = server.getCopyOfOnlineRegionsSortedByOnHeapSize();<a name="line.168"></a>
+<span class="sourceLineNo">169</span> }<a name="line.169"></a>
+<span class="sourceLineNo">170</span> Set<HRegion> excludedRegions = new HashSet<>();<a name="line.170"></a>
+<span class="sourceLineNo">171</span><a name="line.171"></a>
+<span class="sourceLineNo">172</span> double secondaryMultiplier<a name="line.172"></a>
+<span class="sourceLineNo">173</span> = ServerRegionReplicaUtil.getRegionReplicaStoreFileRefreshMultiplier(conf);<a name="line.173"></a>
+<span class="sourceLineNo">174</span><a name="line.174"></a>
+<span class="sourceLineNo">175</span> boolean flushedOne = false;<a name="line.175"></a>
+<span class="sourceLineNo">176</span> while (!flushedOne) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> // Find the biggest region that doesn't have too many storefiles (might be null!)<a name="line.177"></a>
+<span class="sourceLineNo">178</span> HRegion bestFlushableRegion =<a name="line.178"></a>
+<span class="sourceLineNo">179</span> getBiggestMemStoreRegion(regionsBySize, excludedRegions, true);<a name="line.179"></a>
+<span class="sourceLineNo">180</span> // Find the biggest region, total, even if it might have too many flushes.<a name="line.180"></a>
+<span class="sourceLineNo">181</span> HRegion bestAnyRegion = getBiggestMemStoreRegion(regionsBySize, excludedRegions, false);<a name="line.181"></a>
+<span class="sourceLineNo">182</span> // Find the biggest region that is a secondary region<a name="line.182"></a>
+<span class="sourceLineNo">183</span> HRegion bestRegionReplica = getBiggestMemStoreOfRegionReplica(regionsBySize, excludedRegions);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> if (bestAnyRegion == null) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span> // If bestAnyRegion is null, assign replica. It may be null too. Next step is check for null<a name="line.185"></a>
+<span class="sourceLineNo">186</span> bestAnyRegion = bestRegionReplica;<a name="line.186"></a>
+<span class="sourceLineNo">187</span> }<a name="line.187"></a>
+<span class="sourceLineNo">188</span> if (bestAnyRegion == null) {<a name="line.188"></a>
+<span class="sourceLineNo">189</span> LOG.error("Above memory mark but there are no flushable regions!");<a name="line.189"></a>
+<span class="sourceLineNo">190</span> return false;<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> HRegion regionToFlush;<a name="line.193"></a>
+<span class="sourceLineNo">194</span> long bestAnyRegionSize;<a name="line.194"></a>
+<span class="sourceLineNo">195</span> long bestFlushableRegionSize;<a name="line.195"></a>
+<span class="sourceLineNo">196</span> switch(flushType) {<a name="line.196"></a>
+<span class="sourceLineNo">197</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.197"></a>
+<span class="sourceLineNo">198</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.198"></a>
+<span class="sourceLineNo">199</span> bestAnyRegionSize = bestAnyRegion.getMemStoreOffHeapSize();<a name="line.199"></a>
+<span class="sourceLineNo">200</span> bestFlushableRegionSize = getMemStoreOffHeapSize(bestFlushableRegion);<a name="line.200"></a>
+<span class="sourceLineNo">201</span> break;<a name="line.201"></a>
+<span class="sourceLineNo">202</span><a name="line.202"></a>
+<span class="sourceLineNo">203</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.203"></a>
+<span class="sourceLineNo">204</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.204"></a>
+<span class="sourceLineNo">205</span> bestAnyRegionSize = bestAnyRegion.getMemStoreHeapSize();<a name="line.205"></a>
+<span class="sourceLineNo">206</span> bestFlushableRegionSize = getMemStoreHeapSize(bestFlushableRegion);<a name="line.206"></a>
+<span class="sourceLineNo">207</span> break;<a name="line.207"></a>
+<span class="sourceLineNo">208</span><a name="line.208"></a>
+<span class="sourceLineNo">209</span> default:<a name="line.209"></a>
+<span class="sourceLineNo">210</span> bestAnyRegionSize = bestAnyRegion.getMemStoreDataSize();<a name="line.210"></a>
+<span class="sourceLineNo">211</span> bestFlushableRegionSize = getMemStoreDataSize(bestFlushableRegion);<a name="line.211"></a>
+<span class="sourceLineNo">212</span> }<a name="line.212"></a>
+<span class="sourceLineNo">213</span> if (bestAnyRegionSize > 2 * bestFlushableRegionSize) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> // Even if it's not supposed to be flushed, pick a region if it's more than twice<a name="line.214"></a>
+<span class="sourceLineNo">215</span> // as big as the best flushable one - otherwise when we're under pressure we make<a name="line.215"></a>
+<span class="sourceLineNo">216</span> // lots of little flushes and cause lots of compactions, etc, which just makes<a name="line.216"></a>
+<span class="sourceLineNo">217</span> // life worse!<a name="line.217"></a>
+<span class="sourceLineNo">218</span> if (LOG.isDebugEnabled()) {<a name="line.218"></a>
+<span class="sourceLineNo">219</span> LOG.debug("Under global heap pressure: " + "Region "<a name="line.219"></a>
+<span class="sourceLineNo">220</span> + bestAnyRegion.getRegionInfo().getRegionNameAsString()<a name="line.220"></a>
+<span class="sourceLineNo">221</span> + " has too many " + "store files, but is "<a name="line.221"></a>
+<span class="sourceLineNo">222</span> + TraditionalBinaryPrefix.long2String(bestAnyRegionSize, "", 1)<a name="line.222"></a>
+<span class="sourceLineNo">223</span> + " vs best flushable region's "<a name="line.223"></a>
+<span class="sourceLineNo">224</span> + TraditionalBinaryPrefix.long2String(<a name="line.224"></a>
+<span class="sourceLineNo">225</span> bestFlushableRegionSize, "", 1)<a name="line.225"></a>
+<span class="sourceLineNo">226</span> + ". Choosing the bigger.");<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span> regionToFlush = bestAnyRegion;<a name="line.228"></a>
+<span class="sourceLineNo">229</span> } else {<a name="line.229"></a>
+<span class="sourceLineNo">230</span> if (bestFlushableRegion == null) {<a name="line.230"></a>
+<span class="sourceLineNo">231</span> regionToFlush = bestAnyRegion;<a name="line.231"></a>
+<span class="sourceLineNo">232</span> } else {<a name="line.232"></a>
+<span class="sourceLineNo">233</span> regionToFlush = bestFlushableRegion;<a name="line.233"></a>
+<span class="sourceLineNo">234</span> }<a name="line.234"></a>
+<span class="sourceLineNo">235</span> }<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span> long regionToFlushSize;<a name="line.237"></a>
+<span class="sourceLineNo">238</span> long bestRegionReplicaSize;<a name="line.238"></a>
+<span class="sourceLineNo">239</span> switch(flushType) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> case ABOVE_OFFHEAP_HIGHER_MARK:<a name="line.240"></a>
+<span class="sourceLineNo">241</span> case ABOVE_OFFHEAP_LOWER_MARK:<a name="line.241"></a>
+<span class="sourceLineNo">242</span> regionToFlushSize = regionToFlush.getMemStoreOffHeapSize();<a name="line.242"></a>
+<span class="sourceLineNo">243</span> bestRegionReplicaSize = getMemStoreOffHeapSize(bestRegionReplica);<a name="line.243"></a>
+<span class="sourceLineNo">244</span> break;<a name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
+<span class="sourceLineNo">246</span> case ABOVE_ONHEAP_HIGHER_MARK:<a name="line.246"></a>
+<span class="sourceLineNo">247</span> case ABOVE_ONHEAP_LOWER_MARK:<a name="line.247"></a>
+<span class="sourceLineNo">248</span> regionToFlushSize = regionToFlush.getMemStoreHeapSize();<a name="line.248"></a>
+<span class="sourceLineNo">249</span> bestRegionReplicaSize = getMemStoreHeapSize(bestRegionReplica);<a name="line.249"></a>
+<span class="sourceLineNo">250</span> break;<a name="line.250"></a>
+<span class="sourceLineNo">251</span><a name="line.251"></a>
+<span class="sourceLineNo">252</span> default:<a name="line.252"></a>
+<span class="sourceLineNo">253</span> regionToFlushSize = regionToFlush.getMemStoreDataSize();<a name="line.253"></a>
+<span class="sourceLineNo">254</span> bestRegionReplicaSize = getMemStoreDataSize(bestRegionReplica);<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> Preconditions.checkState(<a name="line.257"></a>
+<span class="sourceLineNo">258</span> (regionToFlush != null && regionToFlushSize > 0) || bestRegionReplicaSize > 0);<a name="line.258"></a>
+<span class="sourceLineNo">259</span><a name="line.259"></a>
+<span class="sourceLineNo">260</span> if (regionToFlush == null ||<a name="line.260"></a>
+<span class="sourceLineNo">261</span> (bestRegionReplica != null &&<a name="line.261"></a>
+<span class="sourceLineNo">262</span> ServerRegionReplicaUtil.isRegionReplicaStoreFileRefreshEnabled(conf) &&<a name="line.262"></a>
+<span class="sourceLineNo">263</span> (bestRegionReplicaSize > secondaryMultiplier * regionToFlushSize))) {<a name="line.263"></a>
+<span class="sourceLineNo">264</span> LOG.info("Refreshing storefiles of region " + bestRegionReplica +<a name="line.264"></a>
+<span class="sourceLineNo">265</span> " due to global heap pressure. Total memstore off heap size=" +<a name="line.265"></a>
+<span class="sourceLineNo">266</span> TraditionalBinaryPrefix.long2String(<a name="line.266"></a>
+<span class="sourceLineNo">267</span> server.getRegionServerAccounting().getGlobalMemStoreOffHeapSize(), "", 1) +<a name="line.267"></a>
+<span class="sourceLineNo">268</span> " memstore heap size=" + TraditionalBinaryPrefix.long2String(<a name="line.268"></a>
+<span class="sourceLineNo">269</span> server.getRegionServerAccounting().getGlobalMemStoreHeapSize(), "", 1));<a name="line.269"></a>
+<span class="sourceLineNo">270</span> flushedOne = refreshStoreFilesAndReclaimMemory(bestRegionReplica);<a name="line.270"></a>
+<span class="sourceLineNo">271</span> if (!flushedOne) {<a name="line.271"></a>
+<span class="sourceLineNo">272</span> LOG.info("Excluding secondary region " + bestRegionReplica +<a name="line.272"></a>
+<span class="sourceLineNo">273</span> " - trying to find a different region to refresh files.");<a name="line.273"></a>
+<span class="sourceLineNo">274</span> excludedRegions.add(bestRegionReplica);<a name="line.274"></a>
+<span class="sourceLineNo">275</span> }<a name="line.275"></a>
+<span class="sourceLineNo">276</span> } else {<a name="line.276"></a>
+<span class="sourceLineNo">277</span> LOG.info("Flush of region " + regionToFlush + " due to global heap pressure. " +<a name="line.277"></a>
+<span class="sourceLineNo">278</span> "Flush type=" + flushType.toString() +<a name="line.278"></a>
+<span class="sourceLineNo">279</span> "Total Memstore Heap size=" +<a name="line.279"></a>
+<span class="sourceLineNo">280</span> TraditionalBinaryPrefix.long2String(<a name="line.280"></a>
+<span class="sourceLineNo">281</span> server.getRegionServerAccounting().getGlobalMemStoreHeapSize(), "", 1) +<a name="line.281"></a>
+<span class="sourceLineNo">282</span> "Total Memstore Off-Heap size=" +<a name="line.282"></a>
+<span class="sourceLineNo">283</span> TraditionalBinaryPrefix.long2String(<a name="line.283"></a>
+<span class="sourceLineNo">284</span> server.getRegionServerAccounting().getGlobalMemStoreOffHeapSize(), "", 1) +<a name="line.284"></a>
+<span class="sourceLineNo">285</span> ", Region memstore size=" +<a name="line.285"></a>
+<span class="sourceLineNo">286</span> TraditionalBinaryPrefix.long2String(regionToFlushSize, "", 1));<a name="line.286"></a>
+<span class="sourceLineNo">287</span> flushedOne = flushRegion(regionToFlush, true, false, FlushLifeCycleTracker.DUMMY);<a name="line.287"></a>
+<span class="sourceLineNo">288</span><a name="line.288"></a>
+<span class="sourceLineNo">289</span> if (!flushedOne) {<a name="line.289"></a>
+<span class="sourceLineNo">290</span> LOG.info("Excluding unflushable region " + regionToFlush +<a name="line.290"></a>
+<span class="sourceLineNo">291</span> " - trying to find a different region to flush.");<a name="line.291"></a>
+<span class="sourceLineNo">292</span> excludedRegions.add(regionToFlush);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> }<a name="line.293"></a>
+<span class="sourceLineNo">294</span> }<a name="line.294"></a>
+<span class="sourceLineNo">295</span> }<a name="line.295"></a>
+<span class="sourceLineNo">296</span> return true;<a name="line.296"></a>
+<span class="sourceLineNo">297</span> }<a name="line.297"></a>
+<span class="sourceLineNo">298</span><a name="line.298"></a>
+<span class="sourceLineNo">299</span> /**<a name="line.299"></a>
+<span class="sourceLineNo">300</span> * @return Return memstore offheap size or null if <code>r</code> is null<a name="line.300"></a>
+<span class="sourceLineNo">301</span> */<a name="line.301"></a>
+<span class="sourceLineNo">302</span> private static long getMemStoreOffHeapSize(HRegion r) {<a name="line.302"></a>
+<span class="sourceLineNo">303</span> return r == null? 0: r.getMemStoreOffHeapSize();<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> /**<a name="line.306"></a>
+<span class="sourceLineNo">307</span> * @return Return memstore heap size or null if <code>r</code> is null<a name="line.307"></a>
+<span class="sourceLineNo">308</span> */<a name="line.308"></a>
+<span class="sourceLineNo">309</span> private static long getMemStoreHeapSize(HRegion r) {<a name="line.309"></a>
+<span class="sourceLineNo">310</span> return r == null? 0: r.getMemStoreHeapSize();<a name="line.310"></a>
+<span class="sourceLineNo">311</span> }<a name="line.311"></a>
+<span class="sourceLineNo">312</span><a name="line.312"></a>
+<span class="sourceLineNo">313</span> /**<a name="line.313"></a>
+<span class="sourceLineNo">314</span> * @return Return memstore data size or null if <code>r</code> is null<a name="line.314"></a>
+<span class="sourceLineNo">315</span> */<a name="line.315"></a>
+<span class="sourceLineNo">316</span> private static long getMemStoreDataSize(HRegion r) {<a name="line.316"></a>
+<span class="sourceLineNo">317</span> return r == null? 0: r.getMemStoreDataSize();<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span><a name="line.319"></a>
+<span class="sourceLineNo">320</span> private class FlushHandler extends HasThread {<a name="line.320"></a>
+<span class="sourceLineNo">321</span><a name="line.321"></a>
+<span class="sourceLineNo">322</span> private FlushHandler(String name) {<a name="line.322"></a>
+<span class="sourceLineNo">323</span> super(name);<a name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span><a name="line.325"></a>
+<span class="sourceLineNo">326</span> @Override<a name="line.326"></a>
+<span class="sourceLineNo">327</span> public void run() {<a name="line.327"></a>
+<span class="sourceLineNo">328</span> while (!server.isStopped()) {<a name="line.328"></a>
+<span class="sourceLineNo">329</span> FlushQueueEntry fqe = null;<a name="line.329"></a>
+<span class="sourceLineNo">330</span> try {<a name="line.330"></a>
+<span class="sourceLineNo">331</span> wakeupPending.set(false); // allow someone to wake us up again<a name="line.331"></a>
+<span class="sourceLineNo">332</span> fqe = flushQueue.poll(threadWakeFrequency, TimeUnit.MILLISECONDS);<a name="line.332"></a>
+<span class="sourceLineNo">333</span> if (fqe == null || fqe == WAKEUPFLUSH_INSTANCE) {<a name="line.333"></a>
+<span class="sourceLineNo">334</span> FlushType type = isAboveLowWaterMark();<a name="line.334"></a>
+<span class="sourceLineNo">335</span> if (type != FlushType.NORMAL) {<a name="line.335"></a>
+<span class="sourceLineNo">336</span> LOG.debug("Flush thread woke up because memory above low water="<a name="line.336"></a>
+<span class="sourceLineNo">337</span> + TraditionalBinaryPrefix.long2String(<a name="line.337"></a>
+<span class="sourceLineNo">338</span> server.getRegionServerAccounting().getGlobalMemStoreLimitLowMark(), "", 1));<a name="line.338"></a>
+<span class="sourceLineNo">339</span> // For offheap memstore, even if the lower water mark was breached due to heap overhead<a name="line.339"></a>
+<span class="sourceLineNo">340</span> // we still select the regions based on the region's memstore data size.<a name="line.340"></a>
+<span class="sourceLineNo">341</span> // TODO : If we want to decide based on heap over head it can be done without tracking<a name="line.341"></a>
+<span class="sourceLineNo">342</span> // it per region.<a name="line.342"></a>
+<span class="sourceLineNo">343</span> if (!flushOneForGlobalPressure()) {<a name="line.343"></a>
+<span class="sourceLineNo">344</span> // Wasn't able to flush any region, but we're above low water mark<a name="line.344"></a>
+<span class="sourceLineNo">345</span> // This is unlikely to happen, but might happen when closing the<a name="line.345"></a>
+<span class="sourceLineNo">346</span> // entire server - another thread is flushing regions. We'll just<a name="line.346"></a>
+<span class="sourceLineNo">347</span> // sleep a little bit to avoid spinning, and then pretend that<a name="line.347"></a>
+<span class="sourceLineNo">348</span> // we flushed one, so anyone blocked will check again<a name="line.348"></a>
+<span class="sourceLineNo">349</span> Thread.sleep(1000);<a name="line.349"></a>
+<span class="sourceLineNo">350</span> wakeUpIfBlocking();<a name="line.350"></a>
+<span class="sourceLineNo">351</span> }<a name="line.351"></a>
+<span class="sourceLineNo">352</span> // Enqueue another one of these tokens so we'll wake up again<a name="line.352"></a>
+<span class="sourceLineNo">353</span> wakeupFlushThread();<a name="line.353"></a>
+<span class="sourceLineNo">354</span> }<a name="line.354"></a>
+<span class="sourceLineNo">355</span> continue;<a name="line.355"></a>
+<span class="sourceLineNo">356</span> }<a name="line.356"></a>
+<span class="sourceLineNo">357</span> FlushRegionEntry fre = (FlushRegionEntry) fqe;<a name="line.357"></a>
+<span class="sourceLineNo">358</span> if (!flushRegion(fre)) {<a name="line.358"></a>
+<span class="sourceLineNo">359</span> break;<a name="line.359"></a>
+<span class="sourceLineNo">360</span> }<a name="line.360"></a>
+<span class="sourceLineNo">361</span> } catch (InterruptedException ex) {<a name="line.361"></a>
+<span class="sourceLineNo">362</span> continue;<a name="line.362"></a>
+<span class="sourceLineNo">363</span> } catch (ConcurrentModificationException ex) {<a name="line.363"></a>
+<span class="sourceLineNo">364</span> continue;<a name="line.364"></a>
+<span class="sourceLineNo">365</span> } catch (Exception ex) {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> LOG.error("Cache flusher failed for entry " + fqe, ex);<a name="line.366"></a>
+<span class="sourceLineNo">367</span> if (!server.checkFileSystem()) {<a name="line.367"></a>
+<span class="sourceLineNo">368</span> break;<a name="line.368"></a>
+<span class="sourceLineNo">369</span> }<a name="line.369"></a>
+<span class="sourceLineNo">370</span> }<a name="line.370"></a>
+<span class="sourceLineNo">371</span> }<a name="line.371"></a>
+<span class="sourceLineNo">372</span> synchronized (regionsInQueue) {<a name="line.372"></a>
+<span class="sourceLineNo">373</span> regionsInQueue.clear();<a name="line.373"></a>
+<span class="sourceLineNo">374</span> flushQueue.clear();<a name="line.374"></a>
+<span class="sourceLineNo">375</span> }<a name="line.375"></a>
+<span class="sourceLineNo">376</span><a name="line.376"></a>
+<span class="sourceLineNo">377</span> // Signal anyone waiting, so they see the close flag<a name="line.377"></a>
+<span class="sourceLineNo">378</span> wakeUpIfBlocking();<a name="line.378"></a>
+<span class="sourceLineNo">379</span> LOG.info(getName() + " exiting");<a name="line.379"></a>
+<span class="sourceLineNo">380</span> }<a name="line.380"></a>
+<span class="sourceLineNo">381</span> }<a name="line.381"></a>
<span class="sourceLineNo">382</span><a name="line.382"></a>
-<span class="sourceLineNo">383</span> private void wakeupFlushThread() {<a name="line.383"></a>
-<span class="sourceLineNo">384</span> if (wakeupPending.compareAndSet(false, true)) {<a name="line.384"></a>
-<span class="sourceLineNo">385</span> flushQueue.add(WAKEUPFLUSH_INSTANCE);<a name="line.385"></a>
-<span class="sourceLineNo">386</span> }<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> private HRegion getBiggestMemStoreRegion(<a name="line.389"></a>
-<span class="sourceLineNo">390</span> SortedMap<Long, HRegion> regionsBySize,<a name="line.390"></a>
-<span class="sourceLineNo">391</span> Set<HRegion> excludedRegions,<a name="line.391"></a>
-<span class="sourceLineNo">392</span> boolean checkStoreFileCount) {<a name="line.392"></a>
-<span class="sourceLineNo">393</span> synchronized (regionsInQueue) {<a name="line.393"></a>
-<span class="sourceLineNo">394</span> for (HRegion region : regionsBySize.values()) {<a name="line.394"></a>
-<span class="sourceLineNo">395</span> if (excludedRegions.contains(region)) {<a name="line.395"></a>
-<span class="sourceLineNo">396</span> continue;<a name="line.396"></a>
-<span class="sourceLineNo">397</span> }<a name="line.397"></a>
-<span class="sourceLineNo">398</span><a name="line.398"></a>
-<span class="sourceLineNo">399</span> if (region.writestate.flushing || !region.writestate.writesEnabled) {<a name="line.399"></a>
-<span class="sourceLineNo">400</span> continue;<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> if (checkStoreFileCount && isTooManyStoreFiles(region)) {<a name="line.403"></a>
-<span class="sourceLineNo">404</span> continue;<a name="line.404"></a>
-<span class="sourceLineNo">405</span> }<a name="line.405"></a>
-<span class="sourceLineNo">406</span> return region;<a name="line.406"></a>
-<span class="sourceLineNo">407</span> }<a name="line.407"></a>
-<span class="sourceLineNo">408</span> }<a name="line.408"></a>
-<span class="sourceLineNo">409</span> return null;<a name="line.409"></a>
-<span class="sourceLineNo">410</span> }<a name="line.410"></a>
-<span class="sourceLineNo">411</span><a name="line.411"></a>
-<span class="sourceLineNo">412</span> private HRegion getBiggestMemStoreOfRegionReplica(SortedMap<Long, HRegion> regionsBySize,<a name="line.412"></a>
-<span class="sourceLineNo">413</span> Set<HRegion> excludedRegions) {<a name="line.413"></a>
-<span class="sourceLineNo">414</span> synchronized (regionsInQueue) {<a name="line.414"></a>
-<span class="sourceLineNo">415</span> for (HRegion region : regionsBySize.values()) {<a name="line.415"></a>
-<span class="sourceLineNo">416</span> if (excludedRegions.contains(region)) {<a name="line.416"></a>
-<span class="sourceLineNo">417</span> continue;<a name="line.417"></a>
-<span class="sourceLineNo">418</span> }<a name="line.418"></a>
-<span class="sourceLineNo">419</span><a name="line.419"></a>
-<span class="sourceLineNo">420</span> if (RegionReplicaUtil.isDefaultReplica(region.getRegionInfo())) {<a name="line.420"></a>
-<span class="sourceLineNo">421</span> continue;<a name="line.421"></a>
-<span class="sourceLineNo">422</span> }<a name="line.422"></a>
-<span class="sourceLineNo">423</span><a name="line.423"></a>
-<span class="sourceLineNo">424</span> return region;<a name="line.424"></a>
-<span class="sourceLineNo">425</span> }<a name="line.425"></a>
-<span class="sourceLineNo">426</span> }<a name="line.426"></a>
-<span class="sourceLineNo">427</span> return null;<a name="line.427"></a>
-<span class="sourceLineNo">428</span> }<a name="line.428"></a>
-<span class="sourceLineNo">429</span><a name="line.429"></a>
-<span class="sourceLineNo">430</span> private boolean refreshStoreFilesAndReclaimMemory(Region region) {<a name="line.430"></a>
-<span class="sourceLineNo">431</span> try {<a name="line.431"></a>
-<span class="sourceLineNo">432</span> return region.refreshStoreFiles();<a name="line.432"></a>
-<span class="sourceLineNo">433</span> } catch (IOException e) {<a name="line.433"></a>
-<span class="sourceLineNo">434</span> LOG.warn("Refreshing store files failed with exception", e);<a name="line.434"></a>
-<span class="sourceLineNo">435</span> }<a name="line.435"></a>
-<span class="sourceLineNo">436</span> return false;<a name="line.436"></a>
-<span class="sourceLineNo">437</span> }<a name="line.437"></a>
-<span class="sourceLineNo">438</span><a name="line.438"></a>
-<span class="sourceLineNo">439</span> /**<a name="line.439"></a>
-<span class="sourceLineNo">440</span> * Return true if global memory usage is above the high watermark<a name="line.440"></a>
-<span class="sourceLineNo">441</span> */<a name="line.441"></a>
-<span class="sourceLineNo">442</span> private FlushType isAboveHighWaterMark() {<a name="line.442"></a>
-<span class="sourceLineNo">443</span> return server.getRegionServerAccounting().isAboveHighWaterMark();<a name="line.443"></a>
-<span class="sourceLineNo">444</span> }<a name="line.444"></a>
-<span class="sourceLineNo">445</span><a name="line.445"></a>
-<span class="sourceLineNo">446</span> /**<a name="line.446"></a>
-<span class="sourceLineNo">447</span> * Return true if we're above the low watermark<a name="line.447"></a>
-<span class="sourceLineNo">448</span> */<a name="line.448"></a>
-<span class="sourceLineNo">449</span> private FlushType isAboveLowWaterMark() {<a name="line.449"></a>
-<span class="sourceLineNo">450</span> return server.getRegionServerAccounting().isAboveLowWaterMark();<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 void requestFlush(HRegion r, boolean forceFlushAllStores, FlushLifeCycleTracker tracker) {<a name="line.454"></a>
-<span class="sourceLineNo">455</span> r.incrementFlushesQueuedCount();<a name="line.455"></a>
-<span class="sourceLineNo">456</span> synchronized (regionsInQueue) {<a name="line.456"></a>
-<span class="sourceLineNo">457</span> if (!regionsInQueue.containsKey(r)) {<a name="line.457"></a>
-<span class="sourceLineNo">458</span> // This entry has no delay so it will be added at the top of the flush<a name="line.458"></a>
-<span class="sourceLineNo">459</span> // queue. It'll come out near immediately.<a name="line.459"></a>
-<span class="sourceLineNo">460</span> FlushRegionEntry fqe = new FlushRegionEntry(r, forceFlushAllStores, tracker);<a name="line.460"></a>
-<span class="sourceLineNo">461</span> this.regionsInQueue.put(r, fqe);<a name="line.461"></a>
-<span class="sourceLineNo">462</span> this.flushQueue.add(fqe);<a name="line.462"></a>
-<span class="sourceLineNo">463</span> } else {<a name="line.463"></a>
-<span class="sourceLineNo">464</span> tracker.notExecuted("Flush already requested on " + r);<a name="line.464"></a>
-<span class="sourceLineNo">465</span> }<a name="line.465"></a>
-<span class="sourceLineNo">466</span> }<a name="line.466"></a>
-<span class="sourceLineNo">467</span> }<a name="line.467"></a>
-<span class="sourceLineNo">468</span><a name="line.468"></a>
-<span class="sourceLineNo">469</span> @Override<a name="line.469"></a>
-<span class="sourceLineNo">470</span> public void requestDelayedFlush(HRegion r, long delay, boolean forceFlushAllStores) {<a name="line.470"></a>
-<span class="sourceLineNo">471</span> r.incrementFlushesQueuedCount();<a name="line.471"></a>
-<span class="sourceLineNo">472</span> synchronized (regionsInQueue) {<a name="line.472"></a>
-<span class="sourceLineNo">473</span> if (!regionsInQueue.containsKey(r)) {<a name="line.473"></a>
-<span class="sourceLineNo">474</span> // This entry has some delay<a name="line.474"></a>
-<span class="sourceLineNo">475</span> FlushRegionEntry fqe =<a name="line.475"></a>
-<span class="sourceLineNo">476</span> new FlushRegionEntry(r, forceFlushAllStores, FlushLifeCycleTracker.DUMMY);<a name="line.476"></a>
-<span class="sourceLineNo">477</span> fqe.requeue(delay);<a name="line.477"></a>
-<span class="sourceLineNo">478</span> this.regionsInQueue.put(r, fqe);<a name="line.478"></a>
-<span class="sourceLineNo">479</span> this.flushQueue.add(fqe);<a name="line.479"></a>
-<span class="sourceLineNo">480</span> }<a name="line.480"></a>
-<span class="sourceLineNo">481</span> }<a name="line.481"></a>
-<span class="sourceLineNo">482</span> }<a name="line.482"></a>
-<span class="sourceLineNo">483</span><a name="line.483"></a>
-<span class="sourceLineNo">484</span> public int getFlushQueueSize() {<a name="line.484"></a>
-<span class="sourceLineNo">485</span> return flushQueue.size();<a name="line.485"></a>
-<span class="sourceLineNo">486</span> }<a name="line.486"></a>
-<span class="sourceLineNo">487</span><a name="line.487"></a>
-<span class="sourceLineNo">488</span> /**<a name="line.488"></a>
-<span class="sourceLineNo">489</span> * Only interrupt once it's done with a run through the work loop.<a name="line.489"></a>
-<span class="sourceLineNo">490</span> */<a name="line.490"></a>
-<span class="sourceLineNo">491</span> void interruptIfNecessary() {<a name="line.491"></a>
-<span class="sourceLineNo">492</span> lock.writeLock().lock();<a name="line.492"></a>
-<span class="sourceLineNo">493</span> try {<a name="line.493"></a>
-<span class="sourceLineNo">494</span> for (FlushHandler flushHander : flushHandlers) {<a name="line.494"></a>
-<span class="sourceLineNo">495</span> if (flushHander != null) flushHander.interrupt();<a name="line.495"></a>
-<span class="sourceLineNo">496</span> }<a name="line.496"></a>
-<span class="sourceLineNo">497</span> } finally {<a name="line.497"></a>
-<span class="sourceLineNo">498</span> lock.writeLock().unlock();<a name="line.498"></a>
-<span class="sourceLineNo">499</span> }<a name="line.499"></a>
-<span class="sourceLineNo">500</span> }<a name="line.500"></a>
-<span class="sourceLineNo">501</span><a name="line.501"></a>
-<span class="sourceLineNo">502</span> synchronized void start(UncaughtExceptionHandler eh) {<a name="line.502"></a>
-<span class="sourceLineNo">503</span> ThreadFactory flusherThreadFactory = Threads.newDaemonThreadFactory(<a name="line.503"></a>
-<span class="sourceLineNo">504</span> server.getServerName().toShortString() + "-MemStoreFlusher", eh);<a name="line.504"></a>
-<span class="sourceLineNo">505</span> for (int i = 0; i < flushHandlers.length; i++) {<a name="line.505"></a>
-<span class="sourceLineNo">506</span> flushHandlers[i] = new FlushHandler("MemStoreFlusher." + i);<a name="line.506"></a>
-<span class="sourceLineNo">507</span> flusherThreadFactory.newThread(flushHandlers[i]);<a name="line.507"></a>
-<span class="sourceLineNo">508</span> flushHandlers[i].start();<a name="line.508"></a>
-<span class="sourceLineNo">509</span> }<a name="line.509"></a>
-<span class="sourceLineNo">510</span> }<a name="line.510"></a>
-<span class="sourceLineNo">511</span><a name="line.511"></a>
-<span class="sourceLineNo">512</span> boolean isAlive() {<a name="line.512"></a>
-<span class="sourceLineNo">513</span> for (FlushHandler flushHander : flushHandlers) {<a name="line.513"></a>
-<span class="sourceLineNo">514</span> if (flushHander != null && flushHander.isAlive()) {<a name="line.514"></a>
-<span class="sourceLineNo">515</span> return true;<a name="line.515"></a>
-<span class="sourceLineNo">516</span> }<a name="line.516"></a>
-<span class="sourceLineNo">517</span> }<a name="line.517"></a>
-<span class="sourceLineNo">518</span> return false;<a name="line.518"></a>
-<span class="sourceLineNo">519</span> }<a name="line.519"></a>
-<span class="sourceLineNo">520</span><a name="line.520"></a>
-<span class="sourceLineNo">521</span> void join() {<a name="line.521"></a>
-<span class="sourceLineNo">522</span> for (FlushHandler flushHander : flushHandlers) {<a name="line.522"></a>
-<span class="sourceLineNo">523</span> if (flushHander != null) {<a name="line.523"></a>
-<span class="sourceLineNo">524</span> Threads.shutdown(flushHander.getThread());<a name="line.524"></a>
-<span class="sourceLineNo">525</span> }<a name="line.525"></a>
-<span class="sourceLineNo">526</span> }<a name="line.526"></a>
-<span class="sourceLineNo">527</span> }<a name="line.527"></a>
-<span class="sourceLineNo">528</span><a name="line.528"></a>
-<span class="sourceLineNo">529</span> /**<a name="line.529"></a>
-<span class="sourceLineNo">530</span> * A flushRegion that checks store file count. If too many, puts the flush<a name="line.530"></a>
-<span class="sourceLineNo">531</span> * on delay queue to retry later.<a name="line.531"></a>
-<span class="sourceLineNo">532</span> * @param fqe<a name="line.532"></a>
-<span class="sourceLineNo">533</span> * @return true if the region was successfully flushed, false otherwise. If<a name="line.533"></a>
-<span class="sourceLineNo">534</span> * false, there will be accompanying log messages explaining why the region was<a name="line.534"></a>
-<span class="sourceLineNo">535</span> * not flushed.<a name="line.535"></a>
-<span class="sourceLineNo">536</span> */<a name="line.536"></a>
-<span class="sourceLineNo">537</span> private boolean flushRegion(final FlushRegionEntry fqe) {<a name="line.537"></a>
-<span class="sourceLineNo">538</span> HRegion region = fqe.region;<a name="line.538"></a>
-<span class="sourceLineNo">539</span> if (!region.getRegionInfo().isMetaRegion() && isTooManyStoreFiles(region)) {<a name="line.539"></a>
-<span class="sourceLineNo">540</span> if (fqe.isMaximumWait(this.blockingWaitTime)) {<a name="line.540"></a>
-<span class="sourceLineNo">541</span> LOG.info("Waited " + (EnvironmentEdgeManager.currentTime() - fqe.createTime) +<a name="line.541"></a>
-<span class="sourceLineNo">542</span> "ms on a compaction to clean up 'too many store files'; waited " +<a name="line.542"></a>
-<span class="sourceLineNo">543</span> "long enough... proceeding with flush of " +<a name="line.543"></a>
-<span class="sourceLineNo">544</span> region.getRegionInfo().getRegionNameAsString());<a name="line.544"></a>
-<span class="sourceLineNo">545</span> } else {<a name="line.545"></a>
-<span class="sourceLineNo">546</span> // If this is first time we've been put off, then emit a log message.<a name="line.546"></a>
-<span class="sourceLineNo">547</span> if (fqe.getRequeueCount() <= 0) {<a name="line.547"></a>
-<span class="sourceLineNo">548</span> // Note: We don't impose blockingStoreFiles constraint on meta regions<a name="line.548"></a>
-<span class="sourceLineNo">549</span> LOG.warn("Region " + region.getRegionInfo().getEncodedName() + " has too many " +<a name="line.549"></a>
-<span class="sourceLineNo">550</span> "store files; delaying flush up to " + this.blockingWaitTime + "ms");<a name="line.550"></a>
-<span class="sourceLineNo">551</span> if (!this.server.compactSplitThread.requestSplit(region)) {<a name="line.551"></a>
-<span class="sourceLineNo">552</span> try {<a name="line.552"></a>
-<span class="sourceLineNo">553</span> this.server.compactSplitThread.requestSystemCompaction(region,<a name="line.553"></a>
-<span class="sourceLineNo">554</span> Thread.currentThread().getName());<a name="line.554"></a>
-<span class="sourceLineNo">555</span> } catch (IOException e) {<a name="line.555"></a>
-<span class="sourceLineNo">556</span> e = e instanceof RemoteException ?<a name="line.556"></a>
-<span class="sourceLineNo">557</span> ((RemoteException)e).unwrapRemoteException() : e;<a name="line.557"></a>
-<span class="sourceLineNo">558</span> LOG.error("Cache flush failed for region " +<a name="line.558"></a>
-<span class="sourceLineNo">559</span> Bytes.toStringBinary(region.getRegionInfo().getRegionName()), e);<a name="line.559"></a>
-<span class="sourceLineNo">560</span> }<a name="line.560"></a>
-<span class="sourceLineNo">561</span> }<a name="line.561"></a>
-<span class="sourceLineNo">562</span> }<a name="line.562"></a>
-<span class="sourceLineNo">563</span><a name="line.563"></a>
-<span class="sourceLineNo
<TRUNCATED>