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Posted to issues-all@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2020/07/29 07:57:00 UTC

[jira] [Created] (IMPALA-10017) Implement ds_kll_union() function

Gabor Kaszab created IMPALA-10017:
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             Summary: Implement ds_kll_union() function
                 Key: IMPALA-10017
                 URL: https://issues.apache.org/jira/browse/IMPALA-10017
             Project: IMPALA
          Issue Type: New Feature
          Components: Backend, Frontend
            Reporter: Gabor Kaszab


Similarly to https://issues.apache.org/jira/browse/IMPALA-9633 DataSketches KLL also has union functionality.

ds_kll_union() expects a dataset of STRINGs (e.g. column of a table) that represents serialized KLL sketches and returns a single STRING that is the received sketches unioned and serialized.



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