org.apache.hadoop.hbase.procedure2.StoppableThread Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hbase.procedure2;
import org.apache.hadoop.hbase.procedure2.util.StringUtils;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@InterfaceAudience.Private
abstract class StoppableThread extends Thread {
private static final Logger LOG = LoggerFactory.getLogger(StoppableThread.class);
public StoppableThread(final ThreadGroup group, final String name) {
super(group, name);
}
public abstract void sendStopSignal();
public void awaitTermination() {
try {
final long startTime = EnvironmentEdgeManager.currentTime();
for (int i = 0; isAlive(); ++i) {
sendStopSignal();
join(250);
// Log every two seconds; send interrupt too.
if (i > 0 && (i % 8) == 0) {
LOG.warn("Waiting termination of thread {}, {}; sending interrupt", getName(),
StringUtils.humanTimeDiff(EnvironmentEdgeManager.currentTime() - startTime));
interrupt();
}
}
} catch (InterruptedException e) {
LOG.warn("{} join wait got interrupted", getName(), e);
}
}
}