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https://issues.apache.org/jira/browse/HBASE-5238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14365313#comment-14365313
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Andrey Stepachev commented on HBASE-5238:
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removed META: prefix.
it is "off" by default, because it logs into DEBUG facility. So basically it
can be turned ON whenever level is changed to DEBUG.
> 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
> Attachments: HBASE-5238.patch, HBASE-5238.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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