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https://issues.apache.org/jira/browse/SPARK-56227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18068486#comment-18068486
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Akira Ajisaka commented on SPARK-56227:
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PR is available [https://github.com/apache/spark/pull/55028] for review
> Fix GcmTransportCipher to correctly handle multiple messages per channel
> ------------------------------------------------------------------------
>
> Key: SPARK-56227
> URL: https://issues.apache.org/jira/browse/SPARK-56227
> Project: Spark
> Issue Type: Bug
> Components: Security
> Affects Versions: 3.5.8, 4.1.1
> Reporter: Akira Ajisaka
> Priority: Major
>
> AES-GCM for RPC encryption was introduced by SPARK-47172, however, now the
> feature doesn't correctly handle multiple messages per channel. In YARN
> application, the auth handshake succeeds but all post-auth RPC messages are
> dropped or corrupted, leaving the channel hung until YARN kills the container.
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