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https://issues.apache.org/jira/browse/SPARK-20782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16482195#comment-16482195
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Soham Aurangabadkar commented on SPARK-20782:
---------------------------------------------
Hello, I was looking at this issue. A workaround that according to me could be
used using existing APIs is:
{{dataset.storageLevel.equals(StorageLevel.NONE)}}
The reason I think it's accurate is because {{storageLevel}} checks pretty much
exactly what the suggestion in the issue is. Apologies if I'm mistaken.
What do you'll think? Thanks!
[~jlaskowski] [~cloud_fan] [~maropu]
> 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
>
> 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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