Github user felixcheung closed the pull request at:
https://github.com/apache/spark/pull/17909
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GitHub user felixcheung opened a pull request:
https://github.com/apache/spark/pull/17909
[SPARK-20661][WIP] try to dump table names
## What changes were proposed in this pull request?
.. to see what tables are leaked.
Do not merge
## How was this patch
