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Posted to issues@spark.apache.org by "Shixiong Zhu (JIRA)" <ji...@apache.org> on 2019/03/25 22:33:00 UTC

[jira] [Created] (SPARK-27275) Potential corruption in EncryptedMessage.transferTo

Shixiong Zhu created SPARK-27275:
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             Summary: Potential corruption in EncryptedMessage.transferTo
                 Key: SPARK-27275
                 URL: https://issues.apache.org/jira/browse/SPARK-27275
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.4.0
            Reporter: Shixiong Zhu
            Assignee: Shixiong Zhu


`EncryptedMessage.transferTo` has a potential corruption issue. When the underlying buffer has more than `1024 * 32` bytes (this should be rare but it could happen in error messages that send over the wire), it may just send a partial message as `EncryptedMessage.count` becomes less than `transferred`. This will cause the client hang forever (or timeout) as it will wait until receiving expected length of bytes,  or weird errors (such as corruption or silent correctness issue) if the channel is reused by other messages.



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