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https://issues.apache.org/jira/browse/HIVE-25459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
László Bodor updated HIVE-25459:
--------------------------------
Description:
given this query:
{code}
CREATE TABLE map_of_doubles (
id int,
doubleMap map<double, double>
) stored as orc;
insert overwrite table map_of_doubles SELECT 1, MAP(CAST(1.0 as DOUBLE), null,
CAST(2.0 as DOUBLE), CAST(3.0 as DOUBLE));
select id, doubleMap from map_of_doubles;
select id, doubleMap[1] from map_of_doubles group by id, doubleMap[1]; -- this
fails
{code}
error is:
{code}
Caused by: java.lang.ClassCastException:
org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector cannot be cast to
org.apache.hadoop.hive.ql.exec.vector.LongColumnVector
at
org.apache.hadoop.hive.ql.exec.vector.expressions.VectorUDFMapIndexLongScalar.findScalarInMap(VectorUDFMapIndexLongScalar.java:67)
at
org.apache.hadoop.hive.ql.exec.vector.expressions.VectorUDFMapIndexBaseScalar.evaluate(VectorUDFMapIndexBaseScalar.java:132)
at
org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:146)
... 23 more
{code}
> Wrong VectorUDFMapIndexBaseScalar child class is used, leading to
> ClassCastException
> ------------------------------------------------------------------------------------
>
> Key: HIVE-25459
> URL: https://issues.apache.org/jira/browse/HIVE-25459
> Project: Hive
> Issue Type: Bug
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
>
> given this query:
> {code}
> CREATE TABLE map_of_doubles (
> id int,
> doubleMap map<double, double>
> ) stored as orc;
> insert overwrite table map_of_doubles SELECT 1, MAP(CAST(1.0 as DOUBLE),
> null, CAST(2.0 as DOUBLE), CAST(3.0 as DOUBLE));
> select id, doubleMap from map_of_doubles;
> select id, doubleMap[1] from map_of_doubles group by id, doubleMap[1]; --
> this fails
> {code}
> error is:
> {code}
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector cannot be cast to
> org.apache.hadoop.hive.ql.exec.vector.LongColumnVector
> at
> org.apache.hadoop.hive.ql.exec.vector.expressions.VectorUDFMapIndexLongScalar.findScalarInMap(VectorUDFMapIndexLongScalar.java:67)
> at
> org.apache.hadoop.hive.ql.exec.vector.expressions.VectorUDFMapIndexBaseScalar.evaluate(VectorUDFMapIndexBaseScalar.java:132)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:146)
> ... 23 more
> {code}
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