Resolution: Not A Problem
Affects Version/s: None
Fix Version/s: None
The Region GC Procedure only cleans the 'info' column family. We also write a rep_barrier column family as of
HBASE-20115 . HBASE-20117 adds a chore to clean them up after-the-fact. I've not studied how rep_barrier works (There is a comment in MetaTableAccessor to add explaination).
This issue is about adding the deletion of the rep_barrier content on region delete (Duo Zhang will this mess up serial replication?).
I want to clean out these rows. They occasionally can be misinterpreted in such as the hbck report as 'Orphan Regions' or in simple loading tools, we'll find the rep_barrier row and then fail because no accompanying info:regioninfo.
Perhaps removing rep_barrier column family promptly is the wrong thing to do... we need the lag for replication to catch up.... Let me know Duo Zhang.
Here is what they look like:
They get updated on split and when location moves. I don't seem to be able to disable this facility – it is on always. It also called 'unused' in title of