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https://issues.apache.org/jira/browse/SPARK-37696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nicholas Chammas updated SPARK-37696:
-------------------------------------
Affects Version/s: 3.2.1
> Optimizer exceeds max iterations
> --------------------------------
>
> Key: SPARK-37696
> URL: https://issues.apache.org/jira/browse/SPARK-37696
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.2.0, 3.2.1
> Reporter: Denis Tarima
> Priority: Minor
>
> A specific scenario causing Spark's failure in tests and a warning in
> production:
> 21/12/20 06:45:24 WARN BaseSessionStateBuilder$$anon$2: Max iterations (100)
> reached for batch Operator Optimization before Inferring Filters, please set
> 'spark.sql.optimizer.maxIterations' to a larger value.
> 21/12/20 06:45:24 WARN BaseSessionStateBuilder$$anon$2: Max iterations (100)
> reached for batch Operator Optimization after Inferring Filters, please set
> 'spark.sql.optimizer.maxIterations' to a larger value.
>
> To reproduce run the following commands in `spark-shell`:
> {{// define case class for a struct type in an array}}
> {{case class S(v: Int, v2: Int)}}
>
> {{// prepare a table with an array of structs}}
> {{Seq((10, Seq(S(1, 2)))).toDF("i", "data").write.saveAsTable("tbl")}}
>
> {{// select using SQL and join with a dataset using "left_anti"}}
> {{spark.sql("select i, data[size(data) - 1].v from
> tbl").join(Seq(10).toDF("i"), Seq("i"), "left_anti").show()}}
>
> The following conditions are required:
> # Having additional `v2` field in `S`
> # Using `{{{}data[size(data) - 1]{}}}` instead of `{{{}element_at(data,
> -1){}}}`
> # Using `{{{}left_anti{}}}` in join operation
>
> The same behavior was observed in `master` branch and `3.1.1`.
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