[spark] Add spark tiering service - #3099
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April 23, 2026 06:09
Extract engine-agnostic split generation from fluss-flink so that other engines (e.g. Spark tiering) can reuse it. Replace FlinkRuntimeException with FlussRuntimeException to drop the Flink dependency.
Port the Spark tiering implementation onto the phase1 extraction: reuse TieringSplitGenerator, TieringCommitter, TieringSplit and TableBucketWriteResult from fluss-client, populate splitIndex and tieringRoundTimestamp via TieringSplit#copy, and adapt to the TieringCommitResult getter API. Adds fluss-spark-tiering entry-point module and Paimon-based integration tests.
Convert the mutable Buffer from asScala to an immutable Seq before passing splits to runTieringRddJob, since Seq means immutable.Seq in Scala 2.13.
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Purpose
Linked issue: close #2985
Brief change log
Tests
API and Format
Documentation