Ted Yu updated HBASE-16423:
         Assignee: Jianwei Cui
     Hadoop Flags: Reviewed
    Fix Version/s: 1.4.0

Test failures were not related to patch.

> Add re-compare option to VerifyReplication to avoid occasional inconsistent 
> rows
> --------------------------------------------------------------------------------
>                 Key: HBASE-16423
>                 URL: https://issues.apache.org/jira/browse/HBASE-16423
>             Project: HBase
>          Issue Type: Improvement
>          Components: Replication
>    Affects Versions: 2.0.0
>            Reporter: Jianwei Cui
>            Assignee: Jianwei Cui
>            Priority: Minor
>             Fix For: 2.0.0, 1.4.0
>         Attachments: HBASE-16423-v1.patch, HBASE-16423-v2.patch
> Because replication keeps eventually consistency, VerifyReplication may 
> report inconsistent rows if there are data being written to source or peer 
> clusters during scanning. These occasionally inconsistent rows will have the 
> same data if we do the comparison again after a short period. It is not easy 
> to find the really inconsistent rows if VerifyReplication report a large 
> number of such occasionally inconsistency. To avoid this case, we can add an 
> option to make VerifyReplication read out the inconsistent rows again after 
> sleeping a few seconds and re-compare the rows during scanning. This behavior 
> follows the eventually consistency of hbase's replication. Suggestions and 
> discussions are welcomed.

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