Guanghao Zhang created HBASE-19337:
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Summary: AsyncMetaTableAccessor may hang when call
ScanController.terminate many times
Key: HBASE-19337
URL: https://issues.apache.org/jira/browse/HBASE-19337
Project: HBase
Issue Type: Bug
Reporter: Guanghao Zhang
Code in ScanControllerImpl.
{code}
private void preCheck() {
Preconditions.checkState(Thread.currentThread() == callerThread,
"The current thread is %s, expected thread is %s, " +
"you should not call this method outside onNext or onHeartbeat",
Thread.currentThread(), callerThread);
Preconditions.checkState(state.equals(ScanControllerState.INITIALIZED),
"Invalid Stopper state %s", state);
}
@Override
public void terminate() {
preCheck();
state = ScanControllerState.TERMINATED;
}
{code}
So if call terminate on a already terminated scan, it will throw
IllegalStateException.
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