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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