Sleeper.sleep does not go back to sleep when interrupted and no stop flag given.
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Key: HBASE-1000
URL: https://issues.apache.org/jira/browse/HBASE-1000
Project: Hadoop HBase
Issue Type: Bug
Components: util
Reporter: Nitay Joffe
Priority: Trivial
When interrupted, the Sleeper.sleep method should exit if the stop flag was
given, otherwise it should continue sleeping. Currently it seems to exits
regardless, which means the stop flag is meaningless.
Here is the relevant code, from
src/java/org/apache/hadoop/hbase/util/Sleeper.java:
public void sleep(final long startTime) {
if (this.stop.get()) {
return;
}
long now = System.currentTimeMillis();
long waitTime = this.period - (now - startTime);
if (waitTime > this.period) {
LOG.warn("Calculated wait time > " + this.period +
"; setting to this.period: " + System.currentTimeMillis() + ", " +
startTime);
}
if (waitTime > 0) {
try {
Thread.sleep(waitTime);
long slept = System.currentTimeMillis() - now;
if (slept > (10 * this.period)) {
LOG.warn("We slept " + slept + "ms, ten times longer than scheduled:
" +
this.period);
}
} catch(InterruptedException iex) {
// We we interrupted because we're meant to stop? If not, just
// continue ignoring the interruption
if (this.stop.get()) {
return;
}
}
}
}
Essentially, the 'if (waitTime > 0)' portion needs to change to a while loop so
that the sleeping will continue after an interruption occurs. I'll attach a
patch when I get around to fixing it.
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