[jira] [Assigned] (SPARK-19753) Remove all shuffle files on a host in case of slave lost of fetch failure

["Wenchen Fan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-19753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan reassigned SPARK-19753:
-----------------------------------

    Assignee: Sital Kedia

> Remove all shuffle files on a host in case of slave lost of fetch failure
> -------------------------------------------------------------------------
>
>                 Key: SPARK-19753
>                 URL: https://issues.apache.org/jira/browse/SPARK-19753
>             Project: Spark
>          Issue Type: Bug
>          Components: Scheduler
>    Affects Versions: 2.0.1
>            Reporter: Sital Kedia
>            Assignee: Sital Kedia
>             Fix For: 2.3.0
>
>
> Currently, when we detect fetch failure, we only remove the shuffle files produced by the executor, while the host itself might be down and all the shuffle files are not accessible. In case we are running multiple executors on a host, any host going down currently results in multiple fetch failures and multiple retries of the stage, which is very inefficient. If we remove all the shuffle files on that host, on first fetch failure, we can rerun all the tasks on that host in a single stage retry. 



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