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https://issues.apache.org/jira/browse/IMPALA-10688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352196#comment-17352196
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ASF subversion and git services commented on IMPALA-10688:
----------------------------------------------------------
Commit 67de4a48b08208b3ebe907b05b303c91b68a20d7 in impala's branch
refs/heads/master from Fucun Chu
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=67de4a4 ]
IMPALA-10688: Implement ds_cpc_stringify() function
This function receives a string that is a serialized Apache
DataSketches CPC sketch and returns its stringified format.
A stringified format should look like and contains the following data:
select ds_cpc_stringify(ds_cpc_sketch(float_col)) from
functional_parquet.alltypestiny;
+--------------------------------------------+
| ds_cpc_stringify(ds_cpc_sketch(float_col)) |
+--------------------------------------------+
| ### CPC sketch summary: |
| lg_k : 11 |
| seed hash : 93cc |
| C : 2 |
| flavor : 1 |
| merged : true |
| intresting col : 0 |
| table entries : 2 |
| window : not allocated |
| ### End sketch summary |
| |
+--------------------------------------------+
Change-Id: I8c9d089bfada6bebd078d8f388d2e146c79e5285
Reviewed-on: http://gerrit.cloudera.org:8080/17373
Tested-by: Impala Public Jenkins <[email protected]>
Reviewed-by: Gabor Kaszab <[email protected]>
> Implement ds_cpc_stringify function
> -----------------------------------
>
> Key: IMPALA-10688
> URL: https://issues.apache.org/jira/browse/IMPALA-10688
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Fucun Chu
> Assignee: Fucun Chu
> Priority: Major
>
> ds_cpc_stringify()receives a string that is a serialized Apache DataSketches
> CPC sketch and returns its stringified format.
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