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https://issues.apache.org/jira/browse/SPARK-33098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruce Robbins resolved SPARK-33098.
-----------------------------------
Resolution: Duplicate
> Explicit or implicit casts involving partition columns can sometimes result
> in a MetaException.
> -----------------------------------------------------------------------------------------------
>
> Key: SPARK-33098
> URL: https://issues.apache.org/jira/browse/SPARK-33098
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Bruce Robbins
> Priority: Major
>
> The following cases throw
> {{MetaException(message:Filtering is supported only on partition keys of type
> string)}}
> {noformat}
> sql("create table test (a int) partitioned by (b int) stored as parquet")
> sql("insert into test values (1, 1), (1, 2), (2, 2)")
> // These throw MetaExceptions
> sql("select * from test where b in ('2')").show(false)
> sql("select * from test where cast(b as string) = '2'").show(false)
> sql("select * from test where cast(b as string) in ('2')").show(false)
> sql("select * from test where cast(b as string) in (2)").show(false)
> sql("select cast(b as string) as b from test where b in ('2')").show(false)
> sql("select cast(b as string) as b from test").filter("b = '2'").show(false)
> // [1]
> sql("select cast(b as string) as b from test").filter("b in (2)").show(false)
> // [2]
> sql("select cast(b as string) as b from test").filter("b in
> ('2')").show(false)
> sql("select * from test where cast(b as string) > '1'").show(false)
> sql("select cast(b as string) b from test").filter("b > '1'").show(false) //
> [3]
> // [1] but not sql("select cast(b as string) as b from test where b =
> '2'").show(false)
> // [2] but not sql("select cast(b as string) as b from test where b in
> (2)").show(false)
> // [3] but not sql("select cast(b as string) b from test where b >
> '1'").show(false)
> {noformat}
> The message ("Filtering is supported only on partition keys of type string")
> is misleading. Filter *is* supported on integer columns, for example.
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