Ryan Wu created YARN-10459:
------------------------------
Summary: containerLaunchedOnNode method not need to hold
schedulerApptemt lock
Key: YARN-10459
URL: https://issues.apache.org/jira/browse/YARN-10459
Project: Hadoop YARN
Issue Type: Improvement
Affects Versions: 3.1.3, 3.2.0
Reporter: Ryan Wu
Fix For: 3.2.1
Now, the containerLaunchedOnNode hold the SchedulerApplicationAttempt
writelock, but looking at the method, it does not change any field. And more
seriously, this will affect the scheduler
public void containerLaunchedOnNode(ContainerId containerId,
NodeId nodeId) {
// Inform the container
writelock.lock
try \{
RMContainer rmContainer = getRMContainer(containerId);
if (rmContainer == null) {
// Some unknown container sneaked into the system. Kill it.
rmContext.getDispatcher().getEventHandler().handle(
new RMNodeCleanContainerEvent(nodeId, containerId));
return;
}
rmContainer.handle(
new RMContainerEvent(containerId, RMContainerEventType.LAUNCHED));
}finally {
writeLock.unlock();
}
}
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