Michael Stack created HBASE-23931:
-------------------------------------
Summary: CatalogJanitor consistency check adds merging regions to
orphan list (tooo)
Key: HBASE-23931
URL: https://issues.apache.org/jira/browse/HBASE-23931
Project: HBase
Issue Type: Bug
Components: hbck2
Reporter: Michael Stack
Fix For: 3.0.0, 2.3.0
When the CJ runs, it does its consistency checking first before figuring if the
current row is that of a splitting or merging region. Down in the guts of
consistency we will check if its a splitting region and then cater
appropriately accommodating daughters, etc. For merge we don't do the same.
We'll actually add merge children parents as orphans. Its transitory but
confusing.
Here is an (ugly) example. Here is how the merge shows in orphans section of
HBCK Report
{code:java}
{ENCODED => 8d4e9d9dbae0a90d47b9f72c89973693, NAME =>
'scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.',
STARTKEY => '\x01\x03\x04\x01\x02\x03', ENDKEY =>
'\x01\x03\x04\x02\x02\x03'}{ENCODED => 62dbb839b3a70d5b670b9a30b0a05648, NAME
=>
'scooter_analytics_segment,\x01\x03\x04\x01\x02\x03\x02\x01\x01\x02201904090000\x00\x00qwest\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0DW:S:P:D\x03\x00\x00\x03,1554833869031.62dbb839b3a70d5b670b9a30b0a05648.',
STARTKEY =>
'\x01\x03\x04\x01\x02\x03\x02\x01\x01\x02201904090000\x00\x00qwest\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0DW:S:P:D\x03\x00\x00\x03',
ENDKEY => '\x01\x03\x04\x02\x01\x01'}{ENCODED =>
8d4e9d9dbae0a90d47b9f72c89973693, NAME =>
'scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.',
STARTKEY => '\x01\x03\x04\x01\x02\x03', ENDKEY =>
'\x01\x03\x04\x02\x02\x03'}{ENCODED => 2666b87ae4b58b05e815a3f14cc33215, NAME
=>
'scooter_analytics_segment,\x01\x03\x04\x02\x01\x01,1583365243857.2666b87ae4b58b05e815a3f14cc33215.',
STARTKEY => '\x01\x03\x04\x02\x01\x01', ENDKEY =>
'\x01\x03\x04\x02\x02\x03'}{code}
Then... here is the row in meta...
{code:java}
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:merge0000, timestamp=1583364483794,
value=PBUF\x08\xE6\xE8\xFC\x9C\xA0-\x12$\x0A\x07default\x12\x19scooter_analytics_segment\x1A\x06\x01\x03\x04\x01\x02\x03"\x06\x01\x03\x04\x02\x02\x03(\x000\x008\x00B
d097cacbd74c36e84a599926547e3249
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:merge0001, timestamp=1583364483794,
value=PBUF\x08\xC8\xF3\xF3\xBD\x8A.\x12$\x0A\x07default\x12\x19scooter_analytics_segment\x1A\x06\x01\x03\x04\x02\x01\x01"\x06\x01\x03\x04\x02\x02\x03(\x000\x008\x00B
6b2ac2d1878e688da50483014fc5ab58
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:regioninfo, timestamp=1583364484283, value={ENCODED =>
8d4e9d9dbae0a90d47b9f72c89973693, NAME =>
'scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.',
STARTKEY => '\x01\x03\x04\x01\x02\x03', ENDKEY =>
'\x01\x03\x04\x02\x02\x03'}
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:seqnumDuringOpen, timestamp=1583364484283,
value=\x00\x00\x00\x00\x00\x00\x010
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:server, timestamp=1583364484283, value=a.example.com:16020
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:serverstartcode, timestamp=1583364484283, value=1583349446638
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:sn, timestamp=1583364483948,
value=a.example.com,16020,1583349446638
scooter_analytics_segment,\x01\x03\x04\x01\x02\x03,1583362144713.8d4e9d9dbae0a90d47b9f72c89973693.
column=info:state, timestamp=1583364484283, value=OPEN
{code}
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