Eric Newton created ACCUMULO-4088:
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Summary: hundreds of Timer threads
Key: ACCUMULO-4088
URL: https://issues.apache.org/jira/browse/ACCUMULO-4088
Project: Accumulo
Issue Type: Bug
Components: client
Affects Versions: 1.7.0
Environment: Small test cluster (~20 nodes)
Reporter: Eric Newton
I was looking at a client that was ingesting slowly with [~dlmarion]. We
jstacked the client to determine what was going on. We found 700+
BatchWriterLatencyTimer threads. This client only has one BatchWriter.
The same client was known to have zookeeper disconnects, and servers reported
that sessionIDs could not be found. Suspect that the client was running out of
memory, having GC pauses, which caused zookeeper disconnects and session
timeouts.
The same client was running well under 1.6, and began having issues under 1.7.
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