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Posted to issues@spark.apache.org by "Yuanjian Li (Jira)" <ji...@apache.org> on 2021/04/21 09:18:00 UTC

[jira] [Created] (SPARK-35172) Implementation for RocksDBCheckpointMetadata

Yuanjian Li created SPARK-35172:
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             Summary: Implementation for RocksDBCheckpointMetadata
                 Key: SPARK-35172
                 URL: https://issues.apache.org/jira/browse/SPARK-35172
             Project: Spark
          Issue Type: Sub-task
          Components: Structured Streaming
    Affects Versions: 3.2.0
            Reporter: Yuanjian Li


The RocksDBCheckpointMetadata persists the metadata for each committed batch in JSON format. The schema for the object contains all RocksDB file names and the number of total keys.
The metadata binds closely with the directory structure of RocksDBFileManager, as described in the design doc - [Directory Structure and Format for Files stored in DFS|https://docs.google.com/document/d/10wVGaUorgPt4iVe4phunAcjU924fa3-_Kf29-2nxH6Y/edit#heading=h.zgvw85ijoz2]



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