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From "Mathias Herberts (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-1784) Missing rows after medium intensity insert
Date Mon, 31 Aug 2009 21:45:32 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mathias Herberts updated HBASE-1784:

    Attachment: dbl-assignment-20090831

This is with a head of 0.20 with St^Ack's fix and Andrew's hack.

lines of interest have been prefixed with '@@' in file 'dbl-assignment-20090831'

This double assignment is happening after a split, as in the previous case.

The double assignement takes place after

2009-08-31 17:03:08,664

The attachement has logs from Master and 2 RS (the ones involved in the double assignment).

> Missing rows after medium intensity insert
> ------------------------------------------
>                 Key: HBASE-1784
>                 URL: https://issues.apache.org/jira/browse/HBASE-1784
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: Jean-Daniel Cryans
>            Priority: Blocker
>             Fix For: 0.20.0
>         Attachments: 1784.patch, DataLoad.java, dbl-assignment-20090831, double-assignment,
HBASE-1784-StoreFileScanner-hack.patch, HBASE-1784.log, META.log, processSplitRegion-check-regionIsOpening.patch
> This bug was uncovered by Mathias in his mail "Issue on data load with 0.20.0-rc2". Basically,
somehow, after a medium intensity insert a lot of rows goes missing. Easy way to reproduce
: PE. Doing a PE scan or randomRead afterwards won't uncover anything since it doesn't bother
about null rows. Simply do a count in the shell, easy to test (I changed my scanner caching
in the shell to do it faster).
> I tested some light insertions with force flush/compact/split in the shell and it doesn't

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