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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9384) TestWebHdfsContentLength intermittently hangs and fails due to TCP conversation mismatch between client and server.
Date Thu, 05 Nov 2015 21:59:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14992572#comment-14992572
] 

Xiaoyu Yao commented on HDFS-9384:
----------------------------------

Thanks [~cnauroth] for addressing my comments. Patch v003 looks pretty good to me. +1 pending
Jenkins.

> TestWebHdfsContentLength intermittently hangs and fails due to TCP conversation mismatch
between client and server.
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9384
>                 URL: https://issues.apache.org/jira/browse/HDFS-9384
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>            Priority: Minor
>         Attachments: HDFS-9384.001.patch, HDFS-9384.002.patch, HDFS-9384.003.patch
>
>
> {{TestWebHdfsContentLength}} runs a simple hand-coded HTTP server in a background thread
to simulate some WebHDFS server responses.  In some environments (notably Windows), I have
observed that the test can hang and fail intermittently.  The root cause is that the server
fails to fully consume the client's input.  This causes a mismatch in the TCP conversation
state, and ultimately the client side hangs, then aborts after the 60-second socket timeout.



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