joshelser commented on a change in pull request #45: HBASE-23371 [HBCK2]
Provide client side method for removing ghost regions in meta.
URL:
https://github.com/apache/hbase-operator-tools/pull/45#discussion_r369681199
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File path: hbase-hbck2/README.md
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@@ -148,6 +148,29 @@ Command:
to finish parent and children. This is SLOW, and dangerous so use
selectively. Does not always work.
+ extraRegionsInMeta <NAMESPACE|NAMESPACE:TABLENAME>...
+ Options:
+ -f, --fix fix meta by removing all extra regions found.
+ Reports regions present on hbase:meta, but with no related
+ directories on the file system. Needs hbase:meta to be online.
+ For each table name passed as parameter, performs diff
+ between regions available in hbase:meta and region dirs on the given
+ file system. Extra regions would get deleted from Meta
+ if passed the --fix option.
+ NOTE: Before deciding on use the "--fix" option, it's worth check if
+ reported extra regions are overlapping with existing valid regions.
+ If so, then "extraRegionsInMeta --fix" is indeed the optimal solution.
+ Otherwise, "assigns" command is the simpler solution, as it recreates
+ regions dirs in the filesystem, if not existing.
+ An example triggering extra regions report for tables 'table_1'
+ and 'table_2', under default namespace:
+ $ HBCK2 extraRegionsInMeta default:table_1 default:table_2
Review comment:
Does the user have to provide the implicit `default` namespace?
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