Reo-LEI commented on pull request #3120:
URL: https://github.com/apache/iceberg/pull/3120#issuecomment-962838534


   @rdblue @stevenzwu @kbendick @jackye1995 Thanks every one for review! As 
Ryan's 
[comment](https://github.com/apache/iceberg/pull/3120#discussion_r742123603), 
current implementation will violates Spark's threading model. And since I start 
work on #3323, I think we should improve the read performance by rewrite data 
files and delete files in time, maybe this PR is not necessary. I will do some 
test after I finish #3323 and see how much benefit this optimization can bring, 
and then consider whether we still need this optimization. Thanks every one's 
work again!


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