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