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From "Lars Hofhansl (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4838) Port 2856 (TestAcidGuarantee is failing) to 0.92
Date Sat, 26 Nov 2011 00:02:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13157345#comment-13157345
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Lars Hofhansl commented on HBASE-4838:
--------------------------------------

Finally found the problem!!
It was indeed a problem in HalfStoreFileReader (as Todd and Stack have suggested all along).
HalfStoreFileReader did not have a getScanner(final boolean cacheBlocks, final boolean pread,
final boolean isCompaction) method, and hence the super method was called returning a normal
reader.

bq. Reference.java and HalfStoreFileReader.java are identical between 0.92 and trunk

I don't know what I was comparing here (must have been late in the night), but they are different
and that difference was exactly the problem. Could have saved myself about 16 hours of debugging.

                
> Port 2856 (TestAcidGuarantee is failing) to 0.92
> ------------------------------------------------
>
>                 Key: HBASE-4838
>                 URL: https://issues.apache.org/jira/browse/HBASE-4838
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.92.0
>
>         Attachments: 4838-v1.txt
>
>
> Moving back port into a separate issue (as suggested by JonH), because this not trivial.

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