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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2022) NPE in housekeeping kills RS
Date Tue, 01 Dec 2009 18:50:20 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans updated HBASE-2022:
--------------------------------------

    Attachment: HBASE-2022.patch

Patch that breaks from the loop if an element is null. 

I'm beginning to wonder if housekeeping is really useful since the Worker processes stuff
and not the main HRS loop (where we call housekeeping).

> NPE in housekeeping kills RS
> ----------------------------
>
>                 Key: HBASE-2022
>                 URL: https://issues.apache.org/jira/browse/HBASE-2022
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.20.3, 0.21.0
>
>         Attachments: HBASE-2022.patch
>
>
> Saw this on Zhenyu's 0.20.1 cluster (which for some weird reason seems to have many issues):
> {code}
> 2009-11-30 16:44:48,170 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: Unhandled
exception. Aborting...
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.housekeeping(HRegionServer.java:1280)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:590)
> 	at java.lang.Thread.run(Thread.java:619)
> {code}
> This reminds me of HBASE-1386 and in fact this could be the same issue (but I can't confirm).
Searching on the web gives me some hits and this is particularly interesting http://forums.sun.com/thread.jspa?threadID=5379669

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