Make compression adaptive with V2 data pages
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 42/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- java
- Domain
- data-engineering
Research direction
Start in parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ColumnChunkPageWriteStore.java at the referenced lines and trace V2 data-page compression handling. Review the relevant existing V2 page-writing tests, then verify that compression is skipped when it provides no meaningful benefit while normal compression remains unchanged.
Written by the indexing model from the issue text.
Description
Describe the enhancement requested
When writing a V2 data page, it seems that compression is always unconditionally enabled even when compression doesn't actually yield any benefits:
https://github.com/apache/parquet-java/blob/0fea3e1e22fffb0a25193e3efb9a5d090899458a/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ColumnChunkPageWriteStore.java#L305-L311
It would be relatively easy to use a hardcoded threshold (for example 98%) above which compression is disabled, which makes reading faster.
Component(s)
Core
- Dominant language
- Java
- Stars
- 3.1k
- Forks
- 1.6k
- Avg merge
- 4d 12h
- Merged PRs (30d)
- 28
Contributor guide
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