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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/12/17 07:14:06 UTC

[GitHub] [spark] dongjoon-hyun edited a comment on pull request #34913: [SPARK-37655][CORE] Add `RocksDB` Implementation for `KVStore`

dongjoon-hyun edited a comment on pull request #34913:
URL: https://github.com/apache/spark/pull/34913#issuecomment-996489833


   I don't think we need to support that kind of migration, @gengliangwang .
   > what will happen if a user enables the RocksDB KVStore when there are existing LevelDB files?
   
   The main goal in Apache Spark 3.3 is to support new installation on M1-based machine with additional explicit configuration (the default is LevelDB.) On M1-based machine, both LevelDB and RocksDB do not work. So, there is no previous data on that machines.


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