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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (SPARK-26327) Metrics in FileSourceScanExec not update correctly
Date Mon, 10 Dec 2018 15:24:00 GMT


ASF GitHub Bot commented on SPARK-26327:

xuanyuanking opened a new pull request #23277: [SPARK-26327][SQL] Metrics in FileSourceScanExec
not update correctly
   ## What changes were proposed in this pull request?
   As the description in [SPARK-26327](,
`postDriverMetricUpdates` was called on wrong place cause this bug, fix this by split the
initializing of `selectedPartitions` and metrics updating logic. Add the updating logic in
`inputRDD` initializing which can take effect in both code generation node and normal node.
   ## How was this patch tested?
   New test case in `SQLMetricsSuite`.
   Manual test:
   |         | Before | After |
   | CodeGen |![image](|![image](|
   | Normal  |![image](|![image](|

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> Metrics in FileSourceScanExec not update correctly
> --------------------------------------------------
>                 Key: SPARK-26327
>                 URL:
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Yuanjian Li
>            Priority: Major
> As currently approach in `FileSourceScanExec`, the metrics of "numFiles" and "metadataTime"(fileListingTime)
were updated while lazy val `selectedPartitions` initialized. But `selectedPartitions` will
be initialized by `metadata` at first, which is called by `queryExecution.toString` in `SQLExecution.withNewExecutionId`.
So while the `SQLMetrics.postDriverMetricUpdates` called, there's no corresponding liveExecutions
in SQLAppStatusListener, the metrics update is not work.

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