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https://issues.apache.org/jira/browse/HBASE-23931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Stack resolved HBASE-23931.
-----------------------------------
Resolution: Cannot Reproduce
Resolving as incomplete for the moment.
Merge should be deleting the two parents as it adds the child yet nothing in
log on why the parents persist.
We might want to add to consistency check handling of this condition but
resolving for now... till get more detail.
> 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
> Priority: Major
> 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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