[GitHub] [iceberg] szehon-ho commented on pull request #4674: Spark-3.2: Avoid duplicate computation of ALL_MANIFESTS metadata table for spark actions

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szehon-ho commented on PR #4674:
URL: https://github.com/apache/iceberg/pull/4674#issuecomment-1118039035

   @RussellSpitzer  pointed me to this, I had a pr is orthogonal to this, to avoid duplicate computation of all_reachable_files here https://github.com/apache/iceberg/pull/3457/files. To me that was the bigger time consumer (exploring all reachable files), though maybe I need to re-do that pr.
   
   Anyway, agree with @RussellSpitzer that maybe cache is a better option than persist (great to see benchmarks for tables with huge snapshots)?  And also it would be better to have it be configurable, and be able to be uncached as soon as possible.


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