Details
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Bug
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Status: Patch Available
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Major
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Resolution: Unresolved
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1.5.2
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None
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None
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Fix the problem that failover processor does not kick-in for HDFS sink on IOException
Description
From a recent thread on the user mailing list:
I have investigated the HDFSEventSink source code, found if the exception was IOException , the exception would not throw to the upper layer,
So FailOverSinkProcessor would not mark this sink as dead.
....
} catch (IOException eIO) {
transaction.rollback();
LOG.warn("HDFS IO error", eIO);
return Status.BACKOFF;
} catch (Throwable th) {
transaction.rollback();
LOG.error("process failed", th);
if (th instanceof Error) {
throw (Error) th;
} else {
throw new EventDeliveryException(th);
}
}
....
The failover processor should be able to use the backoff signal as indication of failure and switch over to the next sink.