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Posted to reviews@spark.apache.org by "dongjoon-hyun (via GitHub)" <gi...@apache.org> on 2026/03/21 19:26:40 UTC
[PR] [SPARK-56127] Use `zulu-openjdk-alpine` to minimize the Docker image [spark-kubernetes-operator]
dongjoon-hyun opened a new pull request, #568:
URL: https://github.com/apache/spark-kubernetes-operator/pull/568
### What changes were proposed in this pull request?
This PR achieves a 13.8% reduction in Docker image size (268MB -> 231MB) by migrating to an Alpine-based runtime.
```diff
$ docker images apache/spark-kubernetes-operator:0.9.0-SNAPSHOT
IMAGE ID DISK USAGE CONTENT SIZE EXTRA
-apache/spark-kubernetes-operator:0.9.0-SNAPSHOT a89965d688a9 811MB 268MB
+apache/spark-kubernetes-operator:0.9.0-SNAPSHOT c1a9534afdcd 659MB 231MB
```
### Why are the changes needed?
The Alpine-based image is smaller than the Ubuntu-based image, reducing the final Docker image size. This project explicitly excludes all native dependencies (netty-tcnative, rocksdb, snappy, zstd, etc.), making the Alpine transition safe.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Manual Docker image build and verification.
### Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Code (claude-opus-4-6)
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Re: [PR] [SPARK-56127] Use `zulu-openjdk-alpine` to minimize the Docker image [spark-kubernetes-operator]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on PR #568:
URL: https://github.com/apache/spark-kubernetes-operator/pull/568#issuecomment-4104115499
Merged to main
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Re: [PR] [SPARK-56127] Use `zulu-openjdk-alpine` to minimize the Docker image [spark-kubernetes-operator]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun closed pull request #568: [SPARK-56127] Use `zulu-openjdk-alpine` to minimize the Docker image
URL: https://github.com/apache/spark-kubernetes-operator/pull/568
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Re: [PR] [SPARK-56127] Use `zulu-openjdk-alpine` to minimize the Docker image [spark-kubernetes-operator]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on PR #568:
URL: https://github.com/apache/spark-kubernetes-operator/pull/568#issuecomment-4104087628
Thank you, @peter-toth !
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