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https://issues.apache.org/jira/browse/SPARK-4071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-4071.
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Resolution: Fixed
Fix Version/s: 1.2.0
Issue resolved by pull request 2917
[https://github.com/apache/spark/pull/2917]
> Unroll fails silently if BlockManager size is small
> ---------------------------------------------------
>
> Key: SPARK-4071
> URL: https://issues.apache.org/jira/browse/SPARK-4071
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.1.0
> Reporter: Andrew Or
> Assignee: Andrew Or
> Fix For: 1.2.0
>
>
> In tests, we may want to have BlockManagers of size < 1MB
> (spark.storage.unrollMemoryThreshold). However, these BlockManagers are
> useless because we can't unroll anything in them ever. At the very least we
> need to log a warning.
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