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https://issues.apache.org/jira/browse/CALCITE-4108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156088#comment-17156088
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Roman Churganov edited comment on CALCITE-4108 at 7/11/20, 6:15 PM:
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obviously the problem is on our side, we use our own implementation for the
Schema, and Calcite expects the java.lang.Double type for the FLOAT Schema type
was (Author: rrrrrr111):
obviously that the problem is on our side, we use our own implementation for
the Schema, and Calcite expects the java.lang.Double type for the FLOAT Schema
type
> ClassCastException: java.lang.Float cannot be cast to java.lang.Double
> ----------------------------------------------------------------------
>
> Key: CALCITE-4108
> URL: https://issues.apache.org/jira/browse/CALCITE-4108
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.23.0
> Environment: JDK 1.8
> Reporter: Roman Churganov
> Assignee: Feng Zhu
> Priority: Critical
>
> running a query like :
> {{select tp.o, MAX( tp.n )}}
> {{ from tp join o on tp.o = o.k}}
> {{ group by tp.o}}
> type of tp.n in Schema is FLOAT, value of tp.n returned from table is of type
> java.lang.Float, Calcite makes grouping internally and get error
>
> {{java.lang.ClassCastException: java.lang.Float cannot be cast to
> java.lang.Doublejava.lang.ClassCastException: java.lang.Float cannot be cast
> to java.lang.Double at Baz$1.apply(Unknown Source) at Baz$1.apply(Unknown
> Source) at Baz$1.apply(Unknown Source) at
> org.apache.calcite.adapter.enumerable.SequencedAdderAggregateLambdaFactory$AccumulatorAdderSeq.apply(SequencedAdderAggregateLambdaFactory.java:81)
> at
> org.apache.calcite.linq4j.EnumerableDefaults.groupBy_(EnumerableDefaults.java:806)
> at
> org.apache.calcite.linq4j.EnumerableDefaults.groupBy(EnumerableDefaults.java:739)
> at
> org.apache.calcite.linq4j.DefaultEnumerable.groupBy(DefaultEnumerable.java:299)
> at Baz.bind(Unknown Source)}}
>
>
>
>
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