pan3793 opened a new pull request, #8399:
URL: https://github.com/apache/hadoop/pull/8399
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### Description of PR
Replaces Hadoop's custom native C bindings for ZStandard compression
(`ZStandardCompressor.c`, `ZStandardDecompressor.c`) with the
`com.github.luben:zstd-jni` JVM library. This eliminates the requirement to
build or install libzstd natively, making ZStandard compression available on
all platforms without a native build.
`zstd-jni` is the de facto choice for JVM applications to the zStandard
compression algorithm, it was adopted by many projects - Parquet, Spark, Avro,
Kafka, HBase, ElasticSearch, etc.
It's relatively painful to set up / upgrade native libraries on each Hadoop
client and node, downstream projects like Parquet/Spark/HBase used to choose to
implement their own zstd codec to overcome such a challenge, resulting in a lot
of repetitive work.
### How was this patch tested?
Pass all existing UTs:
- TestZStandardCompressorDecompressor
- TestCodec
- TestCompressionStreamReuse
Will do more manual tests and update results here.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(HADOOP-19855)?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
### AI Tooling
This PR contains content generated by Claude Code (Sonnet 4.6).
- [x] The PR includes the phrase "Contains content generated by <tool>"
where <tool> is the name of the AI tool used.
- [x] My use of AI contributions follows the ASF legal policy
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