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[python] Introduce merge_map aggregator function#8727

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JingsongLi merged 5 commits into
apache:masterfrom
PyRSA:feature/pypaimon-merge-map-agg-impl
Jul 23, 2026
Merged

[python] Introduce merge_map aggregator function#8727
JingsongLi merged 5 commits into
apache:masterfrom
PyRSA:feature/pypaimon-merge-map-agg-impl

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@PyRSA

@PyRSA PyRSA commented Jul 19, 2026

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Purpose

This PR introduces the Python FieldMergeMapAgg implementation and aligns the Python merge_map aggregation behavior with the Java implementation.

The changes include:

  • Implement FieldMergeMapAgg in Python.
  • Support map merge and retract operations.
  • Add unit tests.

Tests

  • python -m pytest pypaimon/tests/test_field_aggregators.py::FieldMergeMapAggTest -q
  • python -m pytest pypaimon/tests/test_aggregation_e2e.py -q
  • python -m pytest pypaimon/tests/test_aggregation_merge_function.py -q
  • git diff --check

@JingsongLi

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+1

@JingsongLi

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Test failed

@PyRSA

PyRSA commented Jul 21, 2026

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Test failed

The failure appears to be unrelated to this PR. It is caused by a transient dependency download failure in the paimon-jindo module. I'll wait for CI to be rerun.

GET request of: com/aliyun/jindodata/jindo-core/6.9.1/jindo-core-6.9.1.jar from jindodata failed: Read timed out 

@JingsongLi

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+1

@JingsongLi
JingsongLi merged commit 5fb075c into apache:master Jul 23, 2026
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2 participants