Fix Iceberg scheduling failure due to dynamic filters #17871
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`IcebergSplitSource` could fail with `Split source must be finished before TableExecuteSplitsInfo is read` in the following scenario - `getNextBatch` called, initializing `fileScanIterator` and `fileTasksIterator`, but not consuming them fully - dynamic filters completes - `getNextBatch` called, crossing dynamic filter with table predicate, concluding it's none, calling `finish()` and returning NO_MORE_SPLITS_BATCH (signalling the source is finished) - `getTableExecuteSplitsInfo` is called by `SourcePartitionedScheduler`. The invocation fails because `isFinished` returns false, as `fileTasksIterator` isn't consumed.
losipiuk
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Jun 13, 2023
raunaqmorarka
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Jun 13, 2023
findepi
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IcebergSplitSourcecould fail withSplit source must be finished before TableExecuteSplitsInfo is readin the following scenariogetNextBatchcalled, initializingfileScanIteratorandfileTasksIterator, but not consuming them fullygetNextBatchcalled, crossing dynamic filter with table predicate, concluding it's none, callingfinish()and returning NO_MORE_SPLITS_BATCH (signalling the source is finished)getTableExecuteSplitsInfois called bySourcePartitionedScheduler. The invocation fails becauseisFinishedreturns false, asfileTasksIteratorisn't consumed.