Sahil Takiar 34d132c513 IMPALA-8825: Add additional counters to PlanRootSink ...

Adds the counters RowsSent and RowsSentRate to the PLAN_ROOT_SINK
section of the profile:

  PLAN_ROOT_SINK:
     - PeakMemoryUsage: 4.01 MB (4202496)
     - RowBatchGetWaitTime: 0.000ns
     - RowBatchSendWaitTime: 0.000ns
     - RowsSent: 10 (10)
     - RowsSentRate: 416.00 /sec

RowsSent tracks the number of rows sent to the PlanRootSink via
PlanRootSink::Send. RowsSentRate tracks the rate that rows are sent to
the PlanRootSink.

Adds the counters NumRowsFetched, NumRowsFetchedFromCache, and
RowMaterializationRate to the ImpalaServer section of the profile.

  ImpalaServer:
     - ClientFetchWaitTimer: 11.999ms
     - NumRowsFetched: 10 (10)
     - NumRowsFetchedFromCache: 10 (10)
     - RowMaterializationRate: 9.00 /sec
     - RowMaterializationTimer: 1s007ms

NumRowsFetched tracks the total number of rows fetched by the query,
but does not include rows fetched from the cache. NumRowsFetchedFromCache
tracks the total number of rows fetched from the query results cache.
RowMaterializationRate tracks the rate at which rows are materialized.
RowMaterializationTimer already existed and tracks how much time is
spent materializing rows.

Testing:
* Added tests to test_fetch_first.py and query_test/test_fetch.py
* Enabled some tests in test_fetch_first.py that were pending
the completion of IMPALA-8819
* Ran core tests

Change-Id: Id9e101e2f3e2bf8324e149c780d35825ceecc036
Reviewed-on: http://gerrit.cloudera.org:8080/14180
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Reviewed-by: Sahil Takiar <stakiar@cloudera.com>

2019-09-16 19:36:11 +00:00

3.8 KiB

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