[SPARK-54443][SS] Partition key extraction for all streaming stateful operators #53355
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anishshri-db
reviewed
Dec 6, 2025
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| override def shortName: String = "applyInPandasWithState" | ||
| override def shortName: String = | ||
| StatefulOperatorsUtils.FLAT_MAP_GROUPS_IN_PANDAS_WITH_STATE_EXEC_OP_NAME |
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nice - good to move these to utils
anishshri-db
reviewed
Dec 6, 2025
| val SESSION_WINDOW_STATE_STORE_SAVE_EXEC_OP_NAME = "sessionWindowStateStoreSaveExec" | ||
| val FLAT_MAP_GROUPS_WITH_STATE_EXEC_OP_NAME = "flatMapGroupsWithState" | ||
| val FLAT_MAP_GROUPS_IN_PANDAS_WITH_STATE_EXEC_OP_NAME = "applyInPandasWithState" | ||
| val FLAT_MAP_GROUPS_OP_NAMES: Seq[String] = Seq( |
Contributor
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Ah TWS node names are already here - ok nice
anishshri-db
reviewed
Dec 6, 2025
| val DEDUPLICATE_WITHIN_WATERMARK_EXEC_OP_NAME = "dedupeWithinWatermark" | ||
| val SESSION_WINDOW_STATE_STORE_SAVE_EXEC_OP_NAME = "sessionWindowStateStoreSaveExec" | ||
| val FLAT_MAP_GROUPS_WITH_STATE_EXEC_OP_NAME = "flatMapGroupsWithState" | ||
| val FLAT_MAP_GROUPS_IN_PANDAS_WITH_STATE_EXEC_OP_NAME = "applyInPandasWithState" |
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nit: should we rename as APPLY_IN_PANDAS_WITH_STATE_EXEC ?
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What changes were proposed in this pull request?
We want to extract the same partitioning key, used during shuffle to partition the streaming state, to perform repartition for the operator state. The State store key typically includes the partition key, hence we are extracting it depending on the operator state key schema. Each operator determines how they store data in the state store.
This is to make sure repartition is consistent with how the state will be partitioned during query execution.
Why are the changes needed?
For offline state repartition
Does this PR introduce any user-facing change?
No
How was this patch tested?
New tests for each operator
Was this patch authored or co-authored using generative AI tooling?
No