Details
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New Feature
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Status: Resolved
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Major
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Resolution: Fixed
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1.8.0
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None
Description
Concatenating two files together currently requires reading the source files and rewriting the content from scratch. This ends up taking a lot of memory, even if the data is already encoded correctly and blocks just need to be appended and have their metadata updated. Merging two files should be fast and not take much memory.
Attachments
Issue Links
- is cloned by
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PARQUET-1465 CLONE - Add a way to append encoded blocks in ParquetFileWriter
- Resolved
- relates to
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HIVE-9490 [Parquet] Support Alter Table/Partition Concatenate
- Open
- links to