[GitHub] [spark] tgravescs commented on pull request #39845: [SPARK-42277][CORE] Use RocksDB for `spark.history.store.hybridStore.diskBackend` by default

["tgravescs (via GitHub)" <gi...@apache.org>]

tgravescs commented on PR #39845:
URL: https://github.com/apache/spark/pull/39845#issuecomment-1413922796

   so if user is upgrading and want to reuse the disk contents, they have to explicitly set to leveldb, correct?  might be good to have release notes about this.


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