[flink] Support blob compaction for data evolution tables#7932
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JingsongLi merged 18 commits intoMay 22, 2026
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- Should blob compaction be controlled by option
- In CompactPlanner and DataEvolution CompactTask, the logic for parsing the field ID of blob files is basically the same.
JingsongLi
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May 22, 2026
| .rawConvertible(false) | ||
| .build(); | ||
| RecordReader<InternalRow> reader = | ||
| store.newDataEvolutionRead().withReadType(blobWriteType).createReader(dataSplit); |
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You should use blob-as-descriptor to read blob.
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| <td>The TTL in rocksdb index for cross partition upsert (primary keys not contain all partition fields), this can avoid maintaining too many indexes and lead to worse and worse performance, but please note that this may also cause data duplication.</td> | ||
| </tr> | ||
| <tr> | ||
| <td><h5>data-evolution.compaction.blob.enabled</h5></td> |
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blob-compaction.enabled
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+1 |
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Purpose
Enable Flink data-evolution compaction to plan and execute blob compaction tasks.
This implements
DataEvolutionCompactTasksupport forblobTaskby rewriting dedicated blob files withMultipleBlobFileWriter. It also enables the Flink data-evolution compact source to plan blob tasks.The reader path now also supports blob-only merge groups, which is required when a data-evolution blob task contains multiple blob fields without the corresponding normal data file in the same split.
Tests
mvn -pl paimon-core -DfailIfNoTests=false -Dtest=MultipleBlobTableTest#testDataEvolutionBlobCompaction testmvn -pl paimon-flink/paimon-flink-common -DfailIfNoTests=false -Dtest=BlobTableITCase#testBlobCompaction+testMultipleBlobCompaction testmvn -pl paimon-core -DfailIfNoTests=false -Dtest=MultipleBlobTableTest testmvn -pl paimon-flink/paimon-flink-common -DfailIfNoTests=false -Dtest=BlobTableITCase test