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https://issues.apache.org/jira/browse/SPARK-26327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16716117#comment-16716117
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ASF GitHub Bot commented on SPARK-26327:
----------------------------------------
SparkQA commented on issue #23277: [SPARK-26327][SQL] Metrics in
FileSourceScanExec not update correctly
URL: https://github.com/apache/spark/pull/23277#issuecomment-446064532
**[Test build #99940 has
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99940/testReport)**
for PR 23277 at commit
[`0e00aa7`](https://github.com/apache/spark/commit/0e00aa7a219805f3d14ca4d222df4a922a34d825).
* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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> Metrics in FileSourceScanExec not update correctly
> --------------------------------------------------
>
> Key: SPARK-26327
> URL: https://issues.apache.org/jira/browse/SPARK-26327
> 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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