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https://issues.apache.org/jira/browse/IMPALA-10440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17270608#comment-17270608
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ASF subversion and git services commented on IMPALA-10440:
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Commit 5852a0028b2b89d64f2b3281c91c3e23f2788f14 in impala's branch
refs/heads/master from Fucun Chu
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=5852a00 ]
IMPALA-10440: Import Theta functionality from DataSketches
This patch imports the functionality needed for Theta approximate
algorithm from Apache DataSketches.
First, I updated our existing snapshot of DataSketches to the
following commit:b2f749ed5ce6ba650f4259602b133c310c3a5ee4"
Merge pull request #182 from chufucun/include_type"
This affects files originated from hll/, kll/ and theta/ directories
of the DataSketches repo.
Then I copied all the files needed for Theta into our snapshot
directory.
Browse the source files here:
https://github.com/apache/datasketches-cpp/tree/b2f749ed5ce6ba650f4259602b133c310c3a5ee4
Change-Id: I8485d6829f50b130c84ec8bef0a4b5895255ba6c
Reviewed-on: http://gerrit.cloudera.org:8080/16959
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Import Theta functionality from DataSketches
> --------------------------------------------
>
> Key: IMPALA-10440
> URL: https://issues.apache.org/jira/browse/IMPALA-10440
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend
> Reporter: Fucun Chu
> Assignee: Fucun Chu
> Priority: Major
> Fix For: Impala 4.0
>
>
> Import Theta from DataSketches into Impala:
> https://github.com/apache/datasketches-cpp/tree/master/theta/include
> Include it in the build system and make sure that theta_sketch.hpp
> theta_union.hpp and theta_intersection.hpp can be included into Impala source
> files and also verify with tests that the basic functionality such as sketch
> creation, update() and get_result() can be invoked.
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