[jira] [Updated] (TEZ-1656) Grouping of splits should maintain the original ordering of splits within a group

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

     [ https://issues.apache.org/jira/browse/TEZ-1656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha updated TEZ-1656:
----------------------------
    Attachment: TEZ-1656.1.patch

[~vikram.dixit] Please review. Thanks. The patch ensures that ordering is maintained while collecting remainder splits for rack level grouping. Test for it added.

> Grouping of splits should maintain the original ordering of splits within a group
> ---------------------------------------------------------------------------------
>
>                 Key: TEZ-1656
>                 URL: https://issues.apache.org/jira/browse/TEZ-1656
>             Project: Apache Tez
>          Issue Type: Task
>            Reporter: Bikas Saha
>            Assignee: Bikas Saha
>         Attachments: TEZ-1656.1.patch
>
>
> Sometimes the original splits may have an ordering (eg. splits from a sorted file). Maintaining the ordering of splits inside a group maintains the sort order.
> The node level grouping maintains ordering. When collecting leftover groups for rack level grouping, the ordering is lost in current code.



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