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https://issues.apache.org/jira/browse/IMPALA-11739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17640610#comment-17640610
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ASF subversion and git services commented on IMPALA-11739:
----------------------------------------------------------
Commit 3c40919f6e922ef827a4ae8fbc82cb0898de73fd in impala's branch
refs/heads/branch-4.2.0 from gaoxq
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=3c40919f6 ]
IMPALA-11739: Skip pushing down BinaryPredicate with NullLiteral for Iceberg
tables
When iceberg partitioning column filter not NULL or equal NULL, it
throws a ClassCastException. For example: "ERROR: ClassCastException:
org.apache.impala.analysis. NullLiteral cannot be cast to
org.apache.impala.analysis.StringLiteral".
Testing:
- Add 'col=NULL' and 'col!=NULL' queries in iceberg-query.test.
Change-Id: Id6c50978ebac2590622027a239db03f56b082de3
Reviewed-on: http://gerrit.cloudera.org:8080/19270
Reviewed-by: <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
Reviewed-by: Zoltan Borok-Nagy <[email protected]>
> Skip pushing down BinaryPredicate with NullLiteral for Iceberg tables
> ---------------------------------------------------------------------
>
> Key: IMPALA-11739
> URL: https://issues.apache.org/jira/browse/IMPALA-11739
> Project: IMPALA
> Issue Type: Bug
> Reporter: gaoxiaoqing
> Assignee: gaoxiaoqing
> Priority: Major
> Labels: iceberg
>
> Following query throws an Exception, "ERROR: ClassCastException:
> org.apache.impala.analysis.NullLiteral cannot be cast to
> org.apache.impala.analysis.StringLiteral"
> {noformat}
> select * from iceberg_alltypes_part where p_string!=NULL;{noformat}
> When hdfs table filtered not equal null or equal null, it is successful. It
> should keep same.
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