branch-4.1: [fix](streaming-job) Avoid NPE on cross-table DML during snapshot chunk read #63435#63503
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…nk read (#63435) ### What problem does this PR solve? During the snapshot phase, the chunk reader (`IncrementalSourceScanFetcher`) consumes from a change-event queue that may also contain DML records from **other tables** being captured concurrently. When such a foreign-table record reached `isChangeRecordInChunkRange`, the code compared it against the **current chunk's** PK range via `isRecordBetween(...)`. Two problems: 1. The foreign table's schema may not yet be loaded for this fetcher, so extracting its PK throws NPE. 2. Even if the schema were loaded, the foreign table's PK columns do not necessarily align with this chunk's bounds, so any range comparison is meaningless and the record would be incorrectly merged into the wrong chunk's output buffer. This patch adds an explicit `TableId` check at the very start of `isChangeRecordInChunkRange`: records whose `TableId` does not match `currentSnapshotSplit.getTableId()` are skipped before any PK-based comparison runs.
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run buildall |
yiguolei
approved these changes
May 22, 2026
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Cherry-picked from #63435