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https://issues.apache.org/jira/browse/IMPALA-12019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724439#comment-17724439
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ASF subversion and git services commented on IMPALA-12019:
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Commit 87852704516b598e463de65ddfbddca371b74140 in impala's branch
refs/heads/master from Daniel Becker
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=878527045 ]
IMPALA-12147: Allow collections of fixed length types as non-passthrough
children of unions
IMPALA-12019 implemented support for collections of fixed length types
in the sorting tuple. This was made possible by implementing the
materialisation of these collections.
Building on this, this change allows such collections as non-passthrough
children of UNION ALL operations. Note that plain UNIONs are not
supported for any collections for other reasons and this patch does not
affect them or any other set operation.
Testing:
Tests in nested-array-in-select-list.test and
nested-map-in-select-list.test check that
- the newly allowed cases work correctly and
- the correct error message is given for collections of variable length
types.
Change-Id: I14c13323d587e5eb8a2617ecaab831c059a0fae3
Reviewed-on: http://gerrit.cloudera.org:8080/19903
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Support ORDER BY for arrays of fixed length types in select list
> ----------------------------------------------------------------
>
> Key: IMPALA-12019
> URL: https://issues.apache.org/jira/browse/IMPALA-12019
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend, Frontend
> Reporter: Daniel Becker
> Assignee: Daniel Becker
> Priority: Major
>
> As a first stage of IMPALA-10939, we should implement support for ORDER BY
> for arrays that only contain fixed length types. That way the implementation
> could be almost the same as the existing handling of strings.
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