Lantao Jin created SPARK-30494:
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Summary: 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
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
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 This cached data cannot be used since the view temp1 has been replaced
by another plan.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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