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Posted to issues@spark.apache.org by "Jungtaek Lim (Jira)" <ji...@apache.org> on 2021/11/25 03:12:00 UTC

[jira] [Created] (SPARK-37458) Remove unnecessary object serialization on foreachBatch

Jungtaek Lim created SPARK-37458:
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             Summary: Remove unnecessary object serialization on foreachBatch
                 Key: SPARK-37458
                 URL: https://issues.apache.org/jira/browse/SPARK-37458
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 3.3.0
            Reporter: Jungtaek Lim


Currently, ForeachBatchSink leverages ExternalRDD with converting RDD[InternalRow] to RDD[T], to provide Dataset[T] to the user function. This adds SerializeFromObject in the plan, which is actually not required.

We can leverage LogicalRDD instead, to remove SerializeFromObject from the plan.



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