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https://issues.apache.org/jira/browse/HBASE-13811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570198#comment-14570198
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Duo Zhang edited comment on HBASE-13811 at 6/3/15 3:02 AM:
-----------------------------------------------------------

Write a testcase. It fails for me with
{noformat}
java.lang.AssertionError: actual array was null
        at 
org.apache.hadoop.hbase.regionserver.TestSplitWalDataLoss.test(TestSplitWalDataLoss.java:153)
{noformat}

I think the fix should also be applied to branch-1.1 since it will cause data 
loss even if we turn off flush per CF(but no issues if you turn on DLR...). 
[~ndimiduk]


was (Author: apache9):
Write a testcase. It fails for me with
{noformat}
java.lang.AssertionError: actual array was null
        at 
org.apache.hadoop.hbase.regionserver.TestSplitWalDataLoss.test(TestSplitWalDataLoss.java:153)
{noformat}

I think the fix should also be applied to branch-1.1 since it will cause data 
loss even if we turn off flush per CF. [~ndimiduk]

> Splitting WALs, we are filtering out too many edits -> DATALOSS
> ---------------------------------------------------------------
>
>                 Key: HBASE-13811
>                 URL: https://issues.apache.org/jira/browse/HBASE-13811
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 2.0.0, 1.2.0
>            Reporter: stack
>            Assignee: stack
>            Priority: Critical
>             Fix For: 2.0.0, 1.2.0
>
>         Attachments: 13811.branch-1.txt, 13811.txt, HBASE-13811.testcase.patch
>
>
> I've been running ITBLLs against branch-1 around HBASE-13616 (move of 
> ServerShutdownHandler to pv2). I have come across an instance of dataloss. My 
> patch for HBASE-13616 was in place so can only think it the cause (but cannot 
> see how). When we split the logs, we are skipping legit edits. Digging.



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