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https://issues.apache.org/jira/browse/SPARK-24727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-24727.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 21705
[https://github.com/apache/spark/pull/21705]
> The cache 100 in CodeGenerator is too small for streaming
> ---------------------------------------------------------
>
> Key: SPARK-24727
> URL: https://issues.apache.org/jira/browse/SPARK-24727
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: ant_nebula
> Assignee: Takeshi Yamamuro
> Priority: Major
> Fix For: 2.4.0
>
>
> {code:java}
> org.apache.spark.sql.catalyst.expressions.codegen.CodeGenerator
> private val cache = CacheBuilder.newBuilder().maximumSize(100).build{code}
> The cache 100 in CodeGenerator is too small for realtime streaming
> calculation, although is ok for offline calculation. Because realtime
> streaming calculation is mostly more complex in one driver, and performance
> sensitive.
> I suggest spark support configging for user with default 100, such as
> spark.codegen.cache=1000
>
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