Kurt Deschler created IMPALA-12176:
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Summary: Improve client fetch metrics
Key: IMPALA-12176
URL: https://issues.apache.org/jira/browse/IMPALA-12176
Project: IMPALA
Issue Type: Improvement
Reporter: Kurt Deschler
Assignee: Kurt Deschler
These changes address limitations with the current metrics:
* ClientFetchWaitTimer includes both Thrift serialization/write and client
time.
* RowMaterializationTimer includes both coordinator fetch time and time to
convert rows to the client protocol.
Proposed changes:
* Add CreateResultSetTime metric to PLAN_ROOT_SINK node in the query profile.
This will isolate the cost to convert fetched rows to the client protocol.
* Add read/write times for RPCs in /rpcz webui. These will be hidden by
default with a checkbox to enable display.
* Show client RPC read/write/count stats in the query profile
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