feat(datastream): add Modify Data Streams API to add/remove backing indices#22316

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Commits on Jun 25, 2026

Add Modify Data Streams API to add/remove backing indices
Madhan
committed
no-mistakes(review): Fix data stream modify NPEs, mapper leak, and cross-stream guard
Madhan
committed
no-mistakes(lint): Apply Spotless formatting to data stream files
Madhan
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Add indices.modify_data_stream to HLRC notRequiredApi allowlist
Madhan
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no-mistakes(review): Reject generation-conflicting backing index name; use value equality in mapper
Madhan
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Add unit tests for DataStream add/remove backing index and timestamp meta-field merge
Madhan
committed
Add unit test covering ModifyDataStreams client wiring
Madhan
committed