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https://issues.apache.org/jira/browse/HBASE-20101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16381294#comment-16381294
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Jean-Marc Spaggiari commented on HBASE-20101:
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Kind of!
There is 2 things.
One Chore that can check, eventually, on a specified frequence.
One API call that can trigger a reload for a specific region/CF...
I need this 2nd option because I manually move some blocks to restore locality.
I don't want to force HBase to re-check everything. Since I know which file the
blocks are belonging too, I just need to say to HBase than this specific
Region/CF changed...
> HBase should provide a way to re-validate locality
> --------------------------------------------------
>
> Key: HBASE-20101
> URL: https://issues.apache.org/jira/browse/HBASE-20101
> Project: HBase
> Issue Type: New Feature
> Reporter: Jean-Marc Spaggiari
> Priority: Major
>
> HDFS blocks can move for many reasons. HDFS balancing, lost of a disk, of a
> node, etc. However, today, locality seems to be calculated when the files are
> opened for the first time. Even disabling and re-enabling the regions doesn't
> trigger a re-calculation of the locality.
> We should provide a way to let the user ask for this number to be
> re-calculated.
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