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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6733) [0.92 UNIT TESTS] TestReplication.queueFailover occasionally fails [Part-2]
Date Sun, 21 Oct 2012 05:16:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480896#comment-13480896
] 

Lars Hofhansl commented on HBASE-6733:
--------------------------------------

Looks good. I can commit this to 0.94 (either here or in a new porting jira).
                
> [0.92 UNIT TESTS] TestReplication.queueFailover occasionally fails [Part-2]
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-6733
>                 URL: https://issues.apache.org/jira/browse/HBASE-6733
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>             Fix For: 0.96.0
>
>         Attachments: 6733-1.patch, 6733-2.patch, 6733-3.patch, HBASE-6733-0.94.patch
>
>
> The failure is in TestReplication.queueFailover (fails due to unreplicated rows). I have
come across two problems:
> 1. The sleepMultiplier is not properly reset when the currentPath is changed (in ReplicationSource.java).
> 2. ReplicationExecutor sometime removes files to replicate from the queue too early,
resulting in corresponding edits missing. Here the problem is due to the fact the log-file
length that the replication executor finds is not the most updated one, and hence it doesn't
read anything from there, and ultimately, when there is a log roll, the replication-queue
gets a new entry, and the executor drops the old entry out of the queue.

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