Brachi Packter created BEAM-12393:
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Summary: Beam SQL support for HLL count
Key: BEAM-12393
URL: https://issues.apache.org/jira/browse/BEAM-12393
Project: Beam
Issue Type: Improvement
Components: extensions-java-sketching
Reporter: Brachi Packter
There is support for HLL sketch in Ptransform:
{code:java}
p.apply("Int", Create.of(ints)).apply("IntHLL",
ApproximateCountDistinct.globally()
.withPercision(PRECISION));{code}
or
{code:java}
PCollection<KV<Integer, Long>> result =
p.apply("Long", Create.of(longs)).apply("LongHLL",
ApproximateCountDistinct.perKey());
{code}
But, no support for beam sql.
We can't initiate it to be used in SqlTransform (even the combiner:
HllCountMergePartialFn exists)
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