Mate Szalay-Beko created HBASE-25607:
----------------------------------------
Summary: New check in hbck2 to prevent assign of already opened
regions
Key: HBASE-25607
URL: https://issues.apache.org/jira/browse/HBASE-25607
Project: HBase
Issue Type: Improvement
Components: hbase-operator-tools, hbck2
Affects Versions: hbase-operator-tools-1.1.0
Reporter: Mate Szalay-Beko
Assignee: Mate Szalay-Beko
Currently, if we don't have HBASE-24885 on the cluster and we use HBCK2 assigns
command to assign an already OPEN region (even without the --override flag),
then it can cause a stuck Region-In-Transition and a wrong OPENING state in the
meta (or even a double assignment of the same region on two RS).
This happens because the HBase master RPC endpoint doesn't check if the region
is already opened or not. The issue was fixed in HBASE-24885, but it still
remain a problem in previous HBase versions (2.2 and also 2.3.0 and 2.3.1. )
We could add some mechanism into HBCK2 to do a check and don't execute the
assign command if the region is OPEN in the meta. (we could also add a 'force'
flag to bypass this check).
The new check should run only if HBASE-24885 is not present yet on the cluster
(we could validate the cluster version)
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
