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https://issues.apache.org/jira/browse/SPARK-30494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17064093#comment-17064093
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Dongjoon Hyun commented on SPARK-30494:
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Hi, [~cltlfcjin]. How about older versions, 2.3.4 and 2.4.5?
> Duplicates cached RDD when create or replace an existing view
> -------------------------------------------------------------
>
> Key: SPARK-30494
> URL: https://issues.apache.org/jira/browse/SPARK-30494
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Lantao Jin
> Priority: Major
>
> We can reproduce by below commands:
> {code}
> beeline> create or replace temporary view temp1 as select 1
> beeline> cache table tempView
> beeline> create or replace temporary view temp1 as select 1, 2
> beeline> cache table tempView
> {code}
> The cached RDD for plan "select 1" stays in memory forever until the session
> close. This cached data cannot be used since the view temp1 has been replaced
> by another plan. It's a memory leak.
> assert(spark.sharedState.cacheManager.lookupCachedData(sql("select 1,
> 2")).isDefined)
> assert(spark.sharedState.cacheManager.lookupCachedData(sql("select
> 1")).isDefined)
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