Github user wzhfy commented on the issue:
https://github.com/apache/spark/pull/19560
> Users always do not know there's error in stats.
Isn't there any exceptions or error messages when updating table/stats
fails? I suppose the system is able to know it through logging or protect it by
redo mechanism?
> Help to avoid OOM caused by broadcast join. It's for stability.
This config can't avoid OOM anyway becuase file size is different from
memory usage when broadcast join.
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