aajisaka opened a new pull request, #58909:
URL: https://github.com/apache/spark/pull/58909
### What changes were proposed in this pull request?
Fix integer overflow in GcmTransportCipher
### Why are the changes needed?
To fix shuffle error in large shuffle block (>2GB) when AES-GCM is enabled
for RPC encryption:
```
26/09/09 16:18:07 WARN
org.apache.spark.network.server.TransportChannelHandler: Exception in
connection from <host:port>
java.lang.IllegalArgumentException
at java.nio.Buffer.limit(Buffer.java:275)
at
org.apache.spark.network.crypto.GcmTransportCipher$DecryptionHandler.channelRead(GcmTransportCipher.java:458)
...
```
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Added regression tests. Also, applied the patch and ran Spark jobs with 3GB
shuffle blocks successfully in Spark on YARN cluster.
### Was this patch authored or co-authored using generative AI tooling?
Generated-by: OpenCode (GPT-5.6 Sol)
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