Reynold Xin created SPARK-26222:
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Summary: Scan: track file listing time
Key: SPARK-26222
URL: https://issues.apache.org/jira/browse/SPARK-26222
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 2.4.0
Reporter: Reynold Xin
We should track file listing time and add it to the scan node's SQL metric, so
we have visibility how much is spent in file listing. It'd be useful to track
not just duration, but also start and end time so we can construct a timeline.
This requires a little bit design to define what file listing time means, when
we are reading from cache, vs not cache.
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