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From "Shevek (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-5254) Xinclude setup results in a stack trace
Date Fri, 10 Jan 2014 07:36:53 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867590#comment-13867590
] 

Shevek commented on HADOOP-5254:
--------------------------------

I hit this issue this week, and having waded through 350Mb of logfiles and this amongst other
tickets, I wrote this library to help diagnose this class of issue:

https://github.com/shevek/jdiagnostics

The 350Mb is because Hadoop logs the stack trace to the ParserConfigurationException every
time it passes that code path, which is sufficiently painful and impactful on performance
that I've modified my local copy to fast-fail, and then I diagnose it.

Hope it's useful.

The ant -diagnostics thing is a red herring, because while ant looks in /usr/share/java, Hadoop
doesn't.

> Xinclude setup results in a stack trace
> ---------------------------------------
>
>                 Key: HADOOP-5254
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5254
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.20.0, 0.21.0
>         Environment: java version "1.6.0_02"
> Java(TM) SE Runtime Environment (build 1.6.0_02-b05)
> BEA JRockit(R) (build R27.4.0-90-89592-1.6.0_02-20070928-1715-linux-x86_64, compiled
mode)
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: hadoop-5254.patch
>
>
> seen this in SVN_HEAD, and it was mentioned on the user list in the week. It explains
why my health tests are failing on class.ForName(FSConstants)
> gistration(127.0.0.1:8024, storageID=DS-1466307248-127.0.1.1-8024-1234537374021, infoPort=8022,
ipcPort=50020):DataXceiver
> [sf-startdaemon-debug] java.lang.ExceptionInInitializerError
> [sf-startdaemon-debug] 	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:76)
> [sf-startdaemon-debug] 	at java.lang.Thread.run(Thread.java:619)
> [sf-startdaemon-debug] Caused by: java.lang.UnsupportedOperationException: This parser
does not support specification "null" version "null"
> [sf-startdaemon-debug] 	at javax.xml.parsers.DocumentBuilderFactory.setXIncludeAware(DocumentBuilderFactory.java:590)



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