GitHub user iyerr3 opened a pull request:
https://github.com/apache/incubator-madlib/pull/135
Sketch: Remove per-tuple checks
Some of the sketch functions have checks running for each tuple in their
aggregate. These checks include invalid transition state and invalid
types for input data. The checks are important for the functions if run
outside an aggregate context, but are a waste of cycles when called as
an agg. The checks include caql calls that were estimated to eat a large
chunk of the runtime. This work removes these checks - the average time
saved is estimated to be around 35% for datasets ranging in size from 10
million to 1 billion tuples.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/iyerr3/incubator-madlib
bugfix/sketch_catalog_checks
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-madlib/pull/135.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #135
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commit 617408a73ef32f25d2f8ae72ce3e9bc78cd10a4a
Author: Rahul Iyer <ri...@apache.org>
Date: 2017-05-16T22:38:08Z
Sketch: Remove per-tuple checks
Some of the sketch functions have checks running for each tuple in their
aggregate. These checks include invalid transition state and invalid
types for input data. The checks are important for the functions if run
outside an aggregate context, but are a waste of cycles when called as
an agg. The checks include caql calls that were estimated to eat a large
chunk of the runtime. This work removes these checks - the average time
saved is estimated to be around 35% for datasets ranging in size from 10
million to 1 billion tuples.
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