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https://issues.apache.org/jira/browse/SPARK-20782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-20782.
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Resolution: Incomplete
> Dataset's isCached operator
> ---------------------------
>
> Key: SPARK-20782
> URL: https://issues.apache.org/jira/browse/SPARK-20782
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Jacek Laskowski
> Priority: Trivial
> Labels: bulk-closed
>
> It'd be very convenient to have {{isCached}} operator that would say whether
> a query is cached in-memory or not.
> It'd be as simple as the following snippet:
> {code}
> // val q2: DataFrame
> spark.sharedState.cacheManager.lookupCachedData(q2.queryExecution.logical).isDefined
> {code}
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