This is an automated email from the ASF dual-hosted git repository. jackie pushed a commit to branch fasthll_doc in repository https://gitbox.apache.org/repos/asf/incubator-pinot.git
commit f51b5d89ca30d2219fd36289ada312bbb3401801 Author: Jackie (Xiaotian) Jiang <[email protected]> AuthorDate: Tue May 28 15:26:22 2019 -0700 Update the documentation for FASTHLL For serialized HyperLogLog, FASTHLL performs worse than DISTINCTCOUNTHLL, which is counter-intuitive. Update the documentation for that, and will deprecate FASTHLL and FASTHLLMV in the future. --- docs/pql_examples.rst | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/docs/pql_examples.rst b/docs/pql_examples.rst index ef69609..17f0359 100644 --- a/docs/pql_examples.rst +++ b/docs/pql_examples.rst @@ -148,7 +148,8 @@ Supported aggregations on single-value columns * ``MINMAXRANGE`` * ``DISTINCTCOUNT`` * ``DISTINCTCOUNTHLL`` -* ``FASTHLL`` +* ``FASTHLL`` (**WARN**: will be deprecated soon. ``FASTHLL`` stores serialized HyperLogLog in String format, which performs + worse than ``DISTINCTCOUNTHLL``, which supports serialized HyperLogLog in BYTES (byte array) format) * ``PERCENTILE[0-100]``: e.g. ``PERCENTILE5``, ``PERCENTILE50``, ``PERCENTILE99``, etc. * ``PERCENTILEEST[0-100]``: e.g. ``PERCENTILEEST5``, ``PERCENTILEEST50``, ``PERCENTILEEST99``, etc. @@ -163,7 +164,8 @@ Supported aggregations on multi-value columns * ``MINMAXRANGEMV`` * ``DISTINCTCOUNTMV`` * ``DISTINCTCOUNTHLLMV`` -* ``FASTHLLMV`` +* ``FASTHLLMV`` (**WARN**: will be deprecated soon. It does not make lots of sense to configure serialized HyperLogLog + column as a dimension) * ``PERCENTILE[0-100]MV``: e.g. ``PERCENTILE5MV``, ``PERCENTILE50MV``, ``PERCENTILE99MV``, etc. * ``PERCENTILEEST[0-100]MV``: e.g. ``PERCENTILEEST5MV``, ``PERCENTILEEST50MV``, ``PERCENTILEEST99MV``, etc. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
