Javier Akira Luca de Tena created HBASE-24903:
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Summary: 'scandetail' log message is missing when responseTooSlow
happens in the rpc that closes the scanner
Key: HBASE-24903
URL: https://issues.apache.org/jira/browse/HBASE-24903
Project: HBase
Issue Type: Bug
Affects Versions: 1.4.13
Reporter: Javier Akira Luca de Tena
'scandetail' log message is missing when responseTooSlow happens in the rpc
that closes the scanner.
RSRpcServices.closeScanner is called before logging the slowLog in
RPCServer.logResponse.
Since closeScanner removes the scanner entry from scanners map, logResponse
can't find scanDetails when calling RSRpcServices.getScanDetailsWithId.
I have reproduced it by exhausting the region (no more results in the region),
which sets moreResultsInRegion = false and cause to closeScanner in same rpc
[https://github.com/apache/hbase/blob/c2e0cf989e4a86169219161d4d889db80288e636/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java#L3235-L3237]
At least, this seems the behavior in branch-1.
I think this bug was introduced at
https://issues.apache.org/jira/browse/HBASE-17489.
Note that this is a completely different case than
https://issues.apache.org/jira/browse/HBASE-24282.
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