[jira] [Updated] (TEZ-221) Deadlock in DAGSchedulerMRR when setting slow start to 0.5f on a small cluster

["Bikas Saha (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha updated TEZ-221:
---------------------------

    Attachment: TEZ-221.5.patch

Fixes in logic based on more manual testing.
                
> Deadlock in DAGSchedulerMRR when setting slow start to 0.5f on a small cluster
> ------------------------------------------------------------------------------
>
>                 Key: TEZ-221
>                 URL: https://issues.apache.org/jira/browse/TEZ-221
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: yeshavora
>            Assignee: Bikas Saha
>              Labels: TEZ-0.2.0
>         Attachments: TEZ-221.1.patch, TEZ-221.2.patch, TEZ-221.3.patch, TEZ-221.4.preemption.patch, TEZ-221.5.patch
>
>
> generate 10GB data using randomwriter and run sort job using tez-mapreduce-example.jar on single node cluster. The job runs very slow. 

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