HBASE-440 Add optional log roll interval so that log files are garbage collected
git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@627152 13f79535-47bb-0310-9956-ffa450edef68
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@ -44,6 +44,8 @@ Hbase Change Log
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HBASE-436 website: http://hadoop.apache.org/hbase
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HBASE-417 Factor TableOperation and subclasses into separate files from
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HMaster (Bryan Duxbury via Stack)
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HBASE-440 Add optional log roll interval so that log files are garbage
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collected
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Branch 0.1
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@ -155,6 +155,16 @@
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Default: 30 minutes (in miliseconds)
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</description>
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</property>
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<property>
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<name>hbase.regionserver.optionallogrollinterval</name>
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<value>1800000</value>
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<description>
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Amount of time to wait since the last time a the region server's log was
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rolled before invoking an optional log roll (An optional log roll is a
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one in which the log does not contain hbase.regionserver.maxlogentries).
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Default: 30 minutes (in miliseconds)
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</description>
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</property>
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<property>
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<name>hbase.hregion.memcache.flush.size</name>
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<value>67108864</value>
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@ -508,12 +508,17 @@ public class HRegionServer implements HConstants, HRegionInterface, Runnable {
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/** Runs periodically to determine if the HLog should be rolled */
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class LogRoller extends Thread implements LogRollListener {
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private final Integer rollLock = new Integer(0);
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private final long optionalLogRollInterval;
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private long lastLogRollTime;
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private volatile boolean rollLog;
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/** constructor */
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public LogRoller() {
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super();
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this.optionalLogRollInterval = conf.getLong(
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"hbase.regionserver.optionallogrollinterval", 30L * 60L * 1000L);
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this.rollLog = false;
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lastLogRollTime = System.currentTimeMillis();
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}
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/** {@inheritDoc} */
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@ -521,12 +526,18 @@ public class HRegionServer implements HConstants, HRegionInterface, Runnable {
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public void run() {
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while (!stopRequested.get()) {
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while (!rollLog && !stopRequested.get()) {
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synchronized (rollLock) {
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try {
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rollLock.wait(threadWakeFrequency);
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long now = System.currentTimeMillis();
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if (this.lastLogRollTime + this.optionalLogRollInterval <= now) {
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rollLog = true;
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this.lastLogRollTime = now;
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} else {
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synchronized (rollLock) {
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try {
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rollLock.wait(threadWakeFrequency);
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} catch (InterruptedException e) {
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continue;
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} catch (InterruptedException e) {
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continue;
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}
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}
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}
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}
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