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https://issues.apache.org/jira/browse/CASSANDRA-4573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442248#comment-13442248
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Vijay edited comment on CASSANDRA-4573 at 8/27/12 2:35 PM:
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Hi Tyler, I think the issue is related to GC pause can you conform you see the
same?
Run: tail -f /var/log/cassandra/system.log |grep GCInspector
Enable GC logging.
Run: python repro.py
You would see timeout when you see "threads were stopped:" to be > 1.5 Seconds
or so.
was (Author: [email protected]):
Hi Tyler, I think the issue is related to GC pause can you conform you see
the same?
Run: tail -f /var/log/cassandra/system.log |grep GCInspector
Enable GC logging.
Run: python repro.py
You would see timeout when you see "threads were stopped:" to be > 1.5 Seconds
or so.
HSHA copies the data into memory (Frame buffer) that might cause additional GC
pressure, if we are used of having a small heap.
We can try reducing the buffer size in the yaml too.
> HSHA doesn't handle large messages gracefully
> ---------------------------------------------
>
> Key: CASSANDRA-4573
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4573
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Tyler Hobbs
> Assignee: Vijay
> Attachments: repro.py
>
>
> HSHA doesn't seem to enforce any kind of max message length, and when
> messages are too large, it doesn't fail gracefully.
> With debug logs enabled, you'll see this:
> {{DEBUG 13:13:31,805 Unexpected state 16}}
> Which seems to mean that there's a SelectionKey that's valid, but isn't ready
> for reading, writing, or accepting.
> Client-side, you'll get this thrift error (while trying to read a frame as
> part of {{recv_batch_mutate}}):
> {{TTransportException: TSocket read 0 bytes}}
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