[jira] [Commented] (SPARK-15976) Make Stage Numbering determinstic

["Imran Rashid (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-15976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15332686#comment-15332686 ] 

Imran Rashid commented on SPARK-15976:
--------------------------------------

cc [~kayousterhout] [~markhamstra]

> Make Stage Numbering determinstic
> ---------------------------------
>
>                 Key: SPARK-15976
>                 URL: https://issues.apache.org/jira/browse/SPARK-15976
>             Project: Spark
>          Issue Type: Improvement
>          Components: Scheduler
>    Affects Versions: 2.0.0
>            Reporter: Imran Rashid
>
> Stage numbering in spark is non-deterministic.  It never was deterministic, but it *appeared* to be so in most cases.  After SPARK-15927, it is far more random.  Reliable stage numbering would be helpful for internal unit tests, and also for any client code which uses {{SparkListener}} to monitor a job and gauge progress.
> FWIW, I had never even realized that the order was non-deterministic before, and have written plenty of code which assumes some stage numbering.  I expect users may be bitten by this too.  We might even want to try to restore the "usual" ordering from before SPARK-15927.
> Finally it would be nice to restore some of the tests turned off here if possible: https://github.com/apache/spark/pull/13688



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