srowen opened a new pull request #26911: Remove usage of Guava that breaks in 27; replace with workalikes URL: https://github.com/apache/spark/pull/26911 ### What changes were proposed in this pull request? Remove usages of Guava that no longer work in Guava 27, and replace with workalikes. I'll comment on key types of changes below. ### Why are the changes needed? Hadoop 3.2.1 uses Guava 27, so this helps us avoid problems running on Hadoop 3.2.1+ and generally lowers our exposure to Guava. ### Does this PR introduce any user-facing change? Should not be, but see notes below on hash codes and toString. ### How was this patch tested? Existing tests will verify whether these changes break anything for Guava 14. I manually built with an updated version and it compiles with Guava 27; tests running manually locally now.
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