[AURON #2307] Add @transient to large fields and use NativePartition to reduce serialization overhead#2309
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…uce serialization overhead Introduce NativePartition[P] wrapper to carry original partition payloads through NativeRDD without re-indexing into the partitions array at execution time, which avoids serializing the full partitions array. Key changes: - Add @transient to rddPartitions in NativeRDD - Add NativePartition case class for type-safe partition payload access - Wrap input partitions in NativePartition before NativeRDD creation - Extract original partition via .asInstanceOf[NativePartition[P]].payload
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Which issue does this PR close?
Closes #2307
Rationale for this change
Mark large non-serializable fields with
@transientannotation across NativeExec classes to reduce task serialization size and memory usage.Introduce NativePartition[P] wrapper to carry original partition payloads through NativeRDD without re-indexing into the partitions array at execution time, which avoids serializing the full partitions array.
What changes are included in this PR?
@transientto rddPartitions in NativeRDD@transientto case class parameters in shim Exec classesAre there any user-facing changes?
No.
How was this patch tested?
UTs.