[
https://issues.apache.org/jira/browse/SPARK-16713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-16713:
------------------------------------
Assignee: (was: Apache Spark)
> Limit codegen method size to 8KB
> --------------------------------
>
> Key: SPARK-16713
> URL: https://issues.apache.org/jira/browse/SPARK-16713
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, SQL
> Affects Versions: 2.0.0
> Reporter: Qifan Pu
>
> Ideally, we would wish codegen methods to be less than 8KB for bytecode size.
> Beyond 8K JIT won't compile and can cause performance degradation. We have
> seen this for queries with wide schema (30+ fields), where
> agg_doAggregateWithKeys() can be more than 8K. This is also a major reason
> for performance regression when we enable fash aggregate hashmap (such as
> using VectorizedHashMapGenerator.scala).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
