[core] Introduce deletion files to DataSplit #2988
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JingsongLi
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Zouxxyy
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Mar 12, 2024
paimon-core/src/main/java/org/apache/paimon/table/source/DeletionFile.java
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| file.schemaId(), fileName, file.fileSize(), file.level()); | ||
| if (deletionFile != null) { | ||
| DeletionVector deletionVector = | ||
| DeletionVector.read(fileIO, deletionFile); |
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Maybe can add this to IndexFileHandler, readDeletionVector contains version and crc verification
public DeletionVector readDeletionVector(DeletionFile deletionFile) {
return deletionVectorsIndex.readDeletionVector(
new Path(deletionFile.path()),
Pair.of(deletionFile.offset(), deletionFile.length()));
}
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I don't want introduce IndexFileHandler here, imagine a C++Reader, which should not rely on any complex classes, the simpler the better.
| if (deletionFile != null) { | ||
| DeletionVector deletionVector = | ||
| DeletionVector.read(fileIO, deletionFile); | ||
| reader = ApplyDeletionVectorReader.create(reader, deletionVector); |
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Worry about conflicts with readerFactoryBuilder.withDeletionVectorSupplier in the future
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Purpose
Deletion file should be in Split, and the reader should respect deletion files in Split, instead of reading deletion manifest again which is very costly.
Tests
API and Format
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