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Posted to issues@spark.apache.org by "Aaron Davidson (JIRA)" <ji...@apache.org> on 2015/04/20 04:50:58 UTC

[jira] [Updated] (SPARK-7003) Improve reliability of connection failure detection between Netty block transfer service endpoints

     [ https://issues.apache.org/jira/browse/SPARK-7003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aaron Davidson updated SPARK-7003:
----------------------------------
    Summary: Improve reliability of connection failure detection between Netty block transfer service endpoints  (was: Improve reliability of connection failure between Netty block transfer service endpoints)

> Improve reliability of connection failure detection between Netty block transfer service endpoints
> --------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-7003
>                 URL: https://issues.apache.org/jira/browse/SPARK-7003
>             Project: Spark
>          Issue Type: Bug
>    Affects Versions: 1.3.1
>            Reporter: Aaron Davidson
>            Assignee: Aaron Davidson
>
> Currently we rely on the assumption that an exception will be raised and the channel closed if two endpoints cannot communicate over a Netty TCP channel. However, this guarantee does not hold in all network environments, and SPARK-6962 seems to point to a case where only the server side of the connection detected a fault.
> We should improve robustness of fetch/rpc requests by having an explicit timeout in the transport layer which closes the connection if there is a period of inactivity while there are outstanding requests.



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