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https://issues.apache.org/jira/browse/IMPALA-10580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17308128#comment-17308128
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ASF subversion and git services commented on IMPALA-10580:
----------------------------------------------------------
Commit 622e3c95adca5cf30a0aff6542556feab9b8a861 in impala's branch
refs/heads/master from Fucun Chu
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=622e3c9 ]
IMPALA-10580: Implement ds_theta_union_f() function
This function receives two strings that are serialized Apache
DataSketches Theta sketches. Union two sketches and returns the
resulting sketch of union.
Example:
select ds_theta_estimate(ds_theta_union_f(sketch1, sketch2))
from sketch_tbl;
+-------------------------------------------------------+
| ds_theta_estimate(ds_theta_union_f(sketch1, sketch2)) |
+-------------------------------------------------------+
| 15 |
+-------------------------------------------------------+
Change-Id: I8329979b81ceeaad739a43fab79768ca9c2916fa
Reviewed-on: http://gerrit.cloudera.org:8080/17179
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Implement ds_theta_union_f() function.
> --------------------------------------
>
> Key: IMPALA-10580
> URL: https://issues.apache.org/jira/browse/IMPALA-10580
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Fucun Chu
> Assignee: Fucun Chu
> Priority: Major
> Fix For: Impala 4.0
>
>
> This function receives two strings that are serialized Apache DataSketches
> Theta sketches. Union two sketches and returns the resulting sketch of union.
> Example:
> {code:java}
> select ds_theta_estimate(ds_theta_union_f(sketch1, sketch2))
> from sketch_tbl;
> +-------------------------------------------------------+
> | ds_theta_estimate(ds_theta_union_f(sketch1, sketch2)) |
> +-------------------------------------------------------+
> | 15 |
> +-------------------------------------------------------+{code}
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