[jira] [Created] (AMQ-4996) org.apache.activemq.transport.RequestTimedOutIOException thrown by producer.send() for no obvious reason. Message is actually sent.

["Jonathan Graham (JIRA)" <ji...@apache.org>]

Jonathan Graham created AMQ-4996:
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             Summary: org.apache.activemq.transport.RequestTimedOutIOException thrown by producer.send() for no obvious reason. Message is actually sent.
                 Key: AMQ-4996
                 URL: https://issues.apache.org/jira/browse/AMQ-4996
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client
    Affects Versions: 5.5.1
            Reporter: Jonathan Graham


In production we are getting org.apache.activemq.transport.RequestTimedOutIOException exceptions thrown sometimes when we execute the send command. The timeout is set to 5 seconds and it blocks for 5 seconds and then throws the exception. The message is actually sent to the broker successfully (I don't know if it's sent immediately or if there was a delay before it gets there).
We are communicating with the broker via TCP but it is on the localhost.
This happens 'every so often' with no explanation that I can find. No errors appear in the broker logs (and no clues when configured to DEBUG level). The volume is very low; a message every 20-30 seconds or so, and they are immediately handled by a consumer - the broker has not run out of storage or memory.
It seems to happen in bursts (e.g. it happened 4 times within 10 minutes, but not on every message, and then didn't happen again all day).




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