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https://issues.apache.org/jira/browse/HBASE-16578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15483333#comment-15483333
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Jingcheng Du edited comment on HBASE-16578 at 9/12/16 7:38 AM:
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Thanks [~huaxiang]. Good finding!
The scanners in MOB rely on the maxSeqId in StoreFiles.
I debug this issue, and find that the maxSeqId is not loaded by {{StoreFile}}
in {{StoreFileScanner.getScannersForStoreFiles()}} in {{Compactor.compact()}}.
Would you like to give a patch to fix this? Override this compact method to
create readers of StoreFiles in {{DefaultMobCompactor}} or create readers of
the StoreFile before they are sorted in
{{StoreFileScanner.getScannersForStoreFiles()}}?
Thanks.
was (Author: [email protected]):
Thanks [~huaxiang]. Good finding!
The scanners in MOB rely on the maxSeqId in StoreFiles.
I debug this issue, and find that the maxSeqId is not loaded by {{StoreFile}}
in {{StoreFileScanner.getScannersForStoreFiles()}} in {{Compactor.compact()}}.
Would you like to give a patch to fix this? Override this compact method in
{{DefaultMobCompactor}} or create readers of the StoreFile before they are
sorted in {{StoreFileScanner.getScannersForStoreFiles()}}?
Thanks.
> Mob data loss after mob compaction and normal compcation
> --------------------------------------------------------
>
> Key: HBASE-16578
> URL: https://issues.apache.org/jira/browse/HBASE-16578
> Project: HBase
> Issue Type: Bug
> Components: mob
> Affects Versions: 2.0.0
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Attachments: TestMobCompaction.java, TestMobCompaction.java
>
>
> I have a unittest case, which could explore the mob data loss issue. The root
> cause is that with the following line:
> https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mob/compactions/PartitionedMobCompactor.java#L625
> It will make the old mob reference cell win during compaction.
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