[HBASE-22236] AsyncNonMetaRegionLocator should not cache HRegionLocation with null location

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.2.0, 2.3.0, 2.1.5
• Component/s: asyncclient
• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 14/Apr/19 08:16
• Updated: 17/May/19 00:17
• Resolved: 30/Apr/19 09:27

Description

https://builds.apache.org/job/HBase-Flaky-Tests/job/master/2992/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.client.TestAsyncTableGetMultiThreaded-output.txt/*view*/

After this line

2019-04-14 04:44:41,736 INFO  [PEWorker-12] procedure2.ProcedureExecutor(1410): Finished pid=117, state=SUCCESS, hasLock=false; TransitRegionStateProcedure table=hbase:meta, region=1588230740, REOPEN/MOVE in 2.0690sec

Seems we just do nothing until the test is timed out.

And there is no main thread in the output hanging thread, which is a bit strange, although all the get threads are hanging there.

Let me add some logs for better debugging first.