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Posted to issues@hbase.apache.org by "James Page (Commented) (JIRA)" <ji...@apache.org> on 2012/03/01 12:48:00 UTC
[jira] [Commented] (HBASE-5502) region_mover.rb fails to load
-ROOT- region back to original server in deployment with no user tables.
[ https://issues.apache.org/jira/browse/HBASE-5502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219971#comment-13219971 ]
James Page commented on HBASE-5502:
-----------------------------------
Same applies to regions containing tables with no data.
> region_mover.rb fails to load -ROOT- region back to original server in deployment with no user tables.
> ------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5502
> URL: https://issues.apache.org/jira/browse/HBASE-5502
> Project: HBase
> Issue Type: Bug
> Components: scripts
> Affects Versions: 0.92.0
> Environment: Ubuntu precise
> Reporter: James Page
> Priority: Minor
>
> The region_mover loadRegion function incorrectly uses 'isSuccessfulScan':
> {noformat}
> for r in regions
> exists = false
> begin
> exists = isSuccessfulScan(admin, r)
> rescue org.apache.hadoop.hbase.NotServingRegionException => e
> $LOG.info("Failed scan of " + e.message)
> end
> {noformat}
> isSuccessfulScan throws an exception when it fails rather than returning status.
> As a result empty regions don't get restored - this is the case in a fresh install (which is how I discovered this) with no user table.
> Modifying the code to set exists IF isSuccessfulScan does not throw an exception worked for me:
> {noformat}
> for r in regions
> exists = false
> begin
> isSuccessfulScan(admin, r)
> exists = true
> rescue org.apache.hadoop.hbase.NotServingRegionException => e
> $LOG.info("Failed scan of " + e.message)
> end
> {noformat}
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