[
https://issues.apache.org/jira/browse/SPARK-43385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hyukjin Kwon updated SPARK-43385:
---------------------------------
Fix Version/s: (was: 3.5.0)
> The Generator's statistics should be ratio times greater than the child nodes
> -----------------------------------------------------------------------------
>
> Key: SPARK-43385
> URL: https://issues.apache.org/jira/browse/SPARK-43385
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: yikaifei
> Priority: Minor
>
> The Generator's statistics should be ratio times greater than the child nodes.
> Generator is an expression that produces zero or more rows given a single
> input row.
> If `UserDefinedGenerator` and `HiveUDTF` were used, the output could be N
> times that of the child node, resulting in a statistical error.
> Because of incorrect statistics, Spark may select an incorrect execution
> plan. For example, if `BroadcastHashJoinExec` is selected, the Job fails to
> broadcast buildSide.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
