Andrew Kyle Purtell created HBASE-25829:
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Summary: SPLIT state detritus
Key: HBASE-25829
URL: https://issues.apache.org/jira/browse/HBASE-25829
Project: HBase
Issue Type: Bug
Affects Versions: 2.4.3
Reporter: Andrew Kyle Purtell
Fix For: 3.0.0-alpha-1, 2.5.0, 2.4.3
Seen after an integration test load with 'calm' monkey, so this happened in the
happy path.
There were no errors accessing all loaded table data, however whenever the
balancer runs there are a number of concerning INFO level log messages printed
of the form _assignment.RegionStates: Skipping, no server for state=SPLIT,
location=null, table=TABLENAME_
For example:
{noformat}
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=087fb2f7847c2fc0a0b85eb30a97036e
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=0952b94a920454afe9c40becbb7bf205
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=f87a8b993f7eca2524bf2331b7ee3c06
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=74bb28864a120decdf0f4956741df745
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=bc918b609ade0ae4d5530f0467354cae
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=183a199984539f3917a2f8927fe01572
2021-04-30 02:02:09,286 INFO [master/ip-172-31-58-47:8100.Chore.2]
assignment.RegionStates: Skipping, no server for state=SPLIT, location=null,
table=IntegrationTestLoadCommonCrawl, region=6cc5ce4fb4adc00445b3ec7dd8760ba8
{noformat}
The HBCK chore notices them but does nothing:
"Loaded *80 regions *from in-memory state of AssignmentManager"
"Loaded *73 regions from 5 regionservers' reports* and found 0 orphan regions"
"Loaded 3 tables 80 regions from filesystem and found 0 orphan regions"
{noformat}
2021-04-30 02:02:09,300 INFO [master/ip-172-31-58-47:8100.Chore.1]
master.HbckChore: Loaded 80 regions from in-memory state of AssignmentManager
2021-04-30 02:02:09,300 INFO [master/ip-172-31-58-47:8100.Chore.1]
master.HbckChore: Loaded 73 regions from 5 regionservers' reports and found 0
orphan regions
2021-04-30 02:02:09,306 INFO [master/ip-172-31-58-47:8100.Chore.1]
master.HbckChore: Loaded 3 tables 80 regions from filesystem and found 0 orphan
regions
{noformat}
This repeats indefinitely.
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