[common][flink] Fix BlobDescriptor lost during shuffle serialization#8494
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writeBlob() and BlobSerializer called blob.toData() which downloads the actual file content for BlobRef, discarding the descriptor metadata. After BinaryRow deserialization the sink receives BlobData instead of BlobRef, causing "Blob data can not convert to descriptor" errors on tables with blob-descriptor-field when source and sink parallelism differ.
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Purpose
close #8493
[common][flink] Fix BlobDescriptor lost during shuffle serialization
writeBlob()andBlobSerializercalledblob.toData()which downloads the actual file content forBlobRef, discarding the descriptor metadata. AfterBinaryRowdeserialization the sink receivesBlobDatainstead ofBlobRef, causing"Blob data can not convert to descriptor"errors on tables withblob-descriptor-fieldwhen source and sink parallelism differ.Tests
org.apache.paimon.flink.BlobTableITCase#testBlobDescriptorFieldStreamingWriteWithShuffleorg.apache.paimon.flink.BlobTableITCase#testBlobDescriptorFieldBatchWriteWithShuffle