[HBASE-7777] HBCK check for lingering split parents should check for child regions

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.94.6, 0.95.0
• Component/s: hbck, regionserver
• Hadoop Flags: Reviewed
• Assignee: Enis Soztutar
• Reporter: Enis Soztutar
• Created: 06/Feb/13 00:57
• Updated: 23/Aug/18 13:54
• Resolved: 09/Feb/13 01:48

Description

HBCK checks for split parent regions being in meta and hdfs, and reports this as a transient error.

However, split parents, by design, linger around for some time, until its children stops referring to it.
Instead we should check whether the children are there, and do not report anything if it is so.

Issue Links

• breaks: HBASE-21105 TestHBaseFsck failing in branch-1, branch-1.4, branch-1.3 with NPE
• is related to: HBASE-7721 Atomic multi-row mutations in META