[flink] Support bounded streaming read for Fluss source - #4022
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naivedogger wants to merge 4 commits into
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[flink] Support bounded streaming read for Fluss source#4022naivedogger wants to merge 4 commits into
naivedogger wants to merge 4 commits into
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Similar to the Kafka connector's bounded read, a streaming job can now read from a given starting position up to a given stopping position and then finish, which is useful for replaying a bounded time range of the log, backfilling and archiving. - FlinkSource reports BOUNDED when stopping offsets are supplied, and passes them through createEnumerator/restoreEnumerator. - FlinkSourceEnumerator treats a streaming read with stopping offsets as bounded: one-time partition discovery and NoMoreSplits signaling, so the job finishes once all splits reach their stopping offsets. - scan.bounded.mode is supported for log tables, the changelog of primary key tables (earliest/latest/timestamp startup mode) and the $changelog/$binlog virtual tables; the full startup mode of primary key tables and the datalake union read are rejected explicitly. - FlussSourceBuilder#setBounded(OffsetsInitializer) enables bounded streaming reads in the DataStream API.
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Purpose
Linked issue: close #4021
Brief change log
Tests
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