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https://issues.apache.org/jira/browse/AVRO-943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13137626#comment-13137626
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James Baldassari commented on AVRO-943:
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The root of the problem seems to be the unbounded waiting on the connect future
(channelFuture.awaitUninterruptibly()) when NettyTransceiver attempts to
connect to the remote peer. Under some circumstances this call never returns.
I have a patch which addresses the issue by making sure that we always supply a
connection timeout. I added new NettyTransceiver constructors for specifying
the connection timeout. Backward compatibility is preserved by using a default
connection timeout if none is specified. I picked 60 seconds for the default
timeout, but let me know if you think a different value is more appropriate.
In the unit tests I've set the connection timeout to 2 seconds. I ran these in
a loop as you did, and I haven't seen any more hanging. Please try out the
patch and verify when you get a chance.
I've also addressed the concerns in AVRO-848 by removing some log statements
and changing others to debug level.
> TestNettyServerWithCallbacks sometimes hangs
> --------------------------------------------
>
> Key: AVRO-943
> URL: https://issues.apache.org/jira/browse/AVRO-943
> Project: Avro
> Issue Type: Bug
> Components: java
> Reporter: Doug Cutting
>
> I'm periodically seeing tests hang in TestNettyServerWithCallbacks.
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