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From "Andrey Stepachev (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-5238) Add a log4j category for all edits to META/ROOT
Date Wed, 25 Mar 2015 23:06:55 GMT

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Andrey Stepachev edited comment on HBASE-5238 at 3/25/15 11:06 PM:
-------------------------------------------------------------------

ok, merged to master, thank you.
whenever HBASE-12990 will be merged, this can be backported to branch-1


was (Author: octo47):
ok, merged in master, thank you.
whenever HBASE-12990 will be merged, this can be backported to branch-1

> Add a log4j category for all edits to META/ROOT
> -----------------------------------------------
>
>                 Key: HBASE-5238
>                 URL: https://issues.apache.org/jira/browse/HBASE-5238
>             Project: HBase
>          Issue Type: New Feature
>          Components: regionserver
>    Affects Versions: 2.0.0
>            Reporter: Todd Lipcon
>            Assignee: Andrey Stepachev
>            Priority: Minor
>              Labels: beginner
>             Fix For: 2.0.0
>
>         Attachments: HBASE-5238.patch, HBASE-5238.patch, HBASE-5238.v2.patch, meta2.log
>
>
> Occasionally we run into bugs that have corrected META and written some bad data to META/ROOT
but it's difficult to understand the order in which things happened. One option is to dump
the HLog contents from the servers that hosted META at that time, but then it's interspersed
with all other data. It would be nice to add a Log4j Logger to which we log all edits being
applied to META and ROOT in textual form at DEBUG level. Then it would be easier to do a cluster-wide
log grep to see what happened when.



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