Csaba Ringhofer created IMPALA-14838:
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Summary: TotalHasDeferredRPCsTime is not set if deferred_rpcs_ is
never empty
Key: IMPALA-14838
URL: https://issues.apache.org/jira/browse/IMPALA-14838
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Csaba Ringhofer
Saw these conflicting counters in a cancelled profile:
- TotalHasDeferredRPCsTime: 0.000ns
- TotalRPCsDeferred: 1.36K (1364)
The issue is that TotalHasDeferredRPCsTime is only increased when the queue
gets empty so will be 0 if the query is cancelled while the queue was never
depleted:
https://github.com/apache/impala/blob/ef2d50e68987ccbf713122b8f301709a874c5121/be/src/runtime/krpc-data-stream-recvr.cc#L339
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