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https://issues.apache.org/jira/browse/HBASE-13806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566883#comment-14566883
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Jingcheng Du commented on HBASE-13806:
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Thanks guys for comments.
bq. The idea here is that we read a hfile, and if we have the mob refs present
on a cell, we verify that the corresponding mob file is present. Furthermore,
we could verify if the mob value cell is present
I think in this patch, we should do same things as what is done in
HFileCorruptionChecker where only opening a reader to a HFile. We can file
another JIRA to detect the missed mob files which needs a full table scan I am
afraid (In the current implementation of HFile.main() it does the full table
scan, we need resolve the reference to mob file in that scan).
bq. But this tool just try create a reader on the HFiles and not really reading
Cells out of it. So may be we will have the ref cell -> mob cell check as an
other tool or so? Or am I missing some thing?
You are right Anoop. This one is just to find all the mob files and check
whether they are corrupt. We need another JIRA to check the missed mob cells.
bq. But this would need a full table scan also? Are you just plan to check the
integrity of the MOB files?
This is used to check the corruption of mob files, we need another JIRA to
check the integrity, I am afraid we have to do a full table scan like what has
been implemented for normal tables (We need to resolve the reference cell to
the mob cell if any).
> Check the mob files when there are mob-enabled columns in
> HFileCorruptionChecker
> --------------------------------------------------------------------------------
>
> Key: HBASE-13806
> URL: https://issues.apache.org/jira/browse/HBASE-13806
> Project: HBase
> Issue Type: Sub-task
> Components: mob
> Affects Versions: hbase-11339
> Reporter: Jingcheng Du
> Assignee: Jingcheng Du
> Fix For: hbase-11339
>
>
> Now in HFileCorruptionChecker, it only checks the files in regions. We need
> check the mob files too if there are mob-enabled columns in that table.
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