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https://issues.apache.org/jira/browse/HBASE-21745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16888182#comment-16888182
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stack commented on HBASE-21745:
-------------------------------
bq. Taking a look at the refguide, we should at least mention healthy meta ==
healthy upgrade. I can add a note...
Done by HBASE-22685.
Putting a quote from [~zghaobac] that I like here so it gets more of an
'airing'. Its about hbck/hbck2, etc. (Paraphrased because I'm trying to commit
it as comment against the Hbck Interface).
{code}
+// The Hbck interface should only support methods which are about "fixing".
The "checking" work
+// can be done elsewhere -- Canary or by Master: E.g. we can add a chore
thread in master to
+// check for wrong circumstance and show badness in Master web ui. --
paraphrase of
+// Guanghao Zhang from
https://issues.apache.org/jira/browse/HBASE-22673?focusedCommentId=16882591&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16882591
{code}
> Make HBCK2 be able to fix issues other than region assignment
> -------------------------------------------------------------
>
> Key: HBASE-21745
> URL: https://issues.apache.org/jira/browse/HBASE-21745
> Project: HBase
> Issue Type: Umbrella
> Components: hbase-operator-tools, hbck2
> Reporter: Duo Zhang
> Assignee: stack
> Priority: Critical
>
> This is what [~apurtell] posted on mailing-list, HBCK2 should support
> * -Rebuild meta from region metadata in the filesystem, aka offline meta
> rebuild.-
> * Fix assignment errors (undeployed regions, double assignments (yes, should
> not be possible), etc)
> * Fix region holes, overlaps, and other errors in the region chain
> * Fix failed split and merge transactions that have failed to roll back due
> to some bug (related to previous)
> * -Enumerate store files to determine file level corruption and sideline
> corrupt files-
> * -Fix hfile link problems (dangling / broken)-
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