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https://issues.apache.org/jira/browse/SPARK-3628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matei Zaharia updated SPARK-3628:
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Target Version/s: 1.1.1, 1.2.0, 1.0.3 (was: 1.1.1, 1.2.0, 0.9.3, 1.0.3)
> Don't apply accumulator updates multiple times for tasks in result stages
> -------------------------------------------------------------------------
>
> Key: SPARK-3628
> URL: https://issues.apache.org/jira/browse/SPARK-3628
> Project: Spark
> Issue Type: Bug
> Reporter: Matei Zaharia
> Priority: Blocker
>
> In previous versions of Spark, accumulator updates only got applied once for
> accumulators that are only used in actions (i.e. result stages), letting you
> use them to deterministically compute a result. Unfortunately, this got
> broken in some recent refactorings.
> This is related to https://issues.apache.org/jira/browse/SPARK-732, but that
> issue is about applying the same semantics to intermediate stages too, which
> is more work and may not be what we want for debugging.
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