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https://issues.apache.org/jira/browse/IMPALA-5351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16832845#comment-16832845
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ASF subversion and git services commented on IMPALA-5351:
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Commit 3fb36570ae0c7329cdbe3640515bc3e0cb066c81 in impala's branch
refs/heads/master from helifu
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=3fb3657 ]
IMPALA-5351: Support storing column comment of kudu table
This patch intends to support storing column comment of kudu table
on impala side.
Belows tests passed:
1) creata kudu-table with column comment;
2) alter kudu-table with (add/alter[delete] column comment);
3) show create kudu table;
4) describe kudu-table;
5) invalidate metadata;
6) comment on column is { '' | null | 'comment' }
Change-Id: Ifb3b37eed364f12bdb3c1d7ef5be128f1475936c
Reviewed-on: http://gerrit.cloudera.org:8080/12977
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Handle column comments for Kudu tables
> --------------------------------------
>
> Key: IMPALA-5351
> URL: https://issues.apache.org/jira/browse/IMPALA-5351
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Affects Versions: Impala 2.9.0
> Reporter: Thomas Tauber-Marshall
> Assignee: HeLifu
> Priority: Major
> Labels: kudu
> Fix For: Impala 3.3.0
>
>
> Currently, if a column comment is specified in a CREATE TABLE for a Kudu
> table, we just silently drop it because Kudu does not currently support
> column comments (KUDU-1711).
> One option would be to store the comments in HMS, but splitting the metadata
> between HMS and Kudu is probably more complicated than its worth.
> Most likely, we can just wait for it to be implemented on the Kudu side, but
> before then we may want to consider issuing a warning when people use column
> comments on Kudu tables.
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