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https://issues.apache.org/jira/browse/HADOOP-12605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15032688#comment-15032688
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Xiao Chen commented on HADOOP-12605:
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Hi [~iwasakims],
Thanks for looking into this issue! It's great that you looked into the
implementation of the {{Server}} class. :) - I stopped after looking
HADOOP-9956 when I tried to fix HADOOP-10406 and thought it's just a test
failure. Thanks for inspiring me to look into the implementation, and good RCA
overall.
Your 1st comment (the {{maxAccept > server.getNumOpenConnections()}} case)
makes sense to me.
The 2nd comment (the {{maxAccept < server.getNumOpenConnections()}} case), I
could be wrong, but in test we block all the calls so this shouldn't happen in
the test case, right?
The 3rd comment (the {{maxAccept < server.getNumOpenConnections()}} in
{{checkBlocking(1, 1, 1)}} case), since in {{Connection#readAndProcess}} we
have the following code, so even for new client connections 1 rpc call should
be processed too. I confirmed this by some console printing.
{code} boolean isHeaderRead = connectionContextRead; {code}
I guess you're probably already working on it - I think it'd be great if we can
manage to 100% reproduce the issue first.
> Fix intermittent failure of TestIPC.testIpcWithReaderQueuing
> ------------------------------------------------------------
>
> Key: HADOOP-12605
> URL: https://issues.apache.org/jira/browse/HADOOP-12605
> Project: Hadoop Common
> Issue Type: Bug
> Components: test
> Reporter: Masatake Iwasaki
> Assignee: Masatake Iwasaki
> Priority: Minor
>
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