Anupam Yadav created SPARK-56955:
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Summary: Arrow/Netty memory allocator fails on JDK 25 (affects
spark-shell --remote)
Key: SPARK-56955
URL: https://issues.apache.org/jira/browse/SPARK-56955
Project: Spark
Issue Type: Bug
Components: Connect
Affects Versions: 4.2.0
Reporter: Anupam Yadav
On JDK 25 + UBI 10 (Red Hat Enterprise Linux 10.1), spark-shell --remote fails
to start due to Arrow/Netty memory allocator incompatibility:
ExceptionInInitializerError in DefaultAllocationManagerFactory
Caused by: UnsupportedOperationException at EmptyByteBuf.memoryAddress()
This affects any code path that initializes Arrow (Spark Connect client,
vectorized readers, etc.).
Reported by dongjoon-hyun on PR #55720.
Workaround: skip affected tests on JDK 25+ (PR #55999).
Root fix: needs Arrow/Netty update to support JDK 25.
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