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Install

Install this package:

emerge -a dev-db/postgresql-hll

If the package is masked, you can unmask it using the autounmask tool or standard emerge options:

autounmask dev-db/postgresql-hll

Or alternatively:

emerge --autounmask-write -a dev-db/postgresql-hll

Package Information

Description:

This Postgres module introduces a new data type hll which is a HyperLogLog data structure. HyperLogLog is a fixed-size, set-like structure used for distinct value counting with tunable precision. For example, in 1280 bytes hll can estimate the count of tens of billions of distinct values with only a few percent error. In addition to the algorithm proposed in the original paper, this implementation is augmented to improve its accuracy and memory use without sacrificing much speed. See below for more details. This postgresql-hll extension was originally developed by the Science team from Aggregate Knowledge, now a part of Neustar. Please see the acknowledgements section below for details about its contributors.

Homepage:

https://github.com/citusdata/postgresql-hll

License:

Apache-2.0

Versions

Metadata

Description

• This Postgres module introduces a new data type hll which is a HyperLogLog data structure. HyperLogLog is a fixed-size, set-like structure used for distinct value counting with tunable precision. For example, in 1280 bytes hll can estimate the count of tens of billions of distinct values with only a few percent error. In addition to the algorithm proposed in the original paper, this implementation is augmented to improve its accuracy and memory use without sacrificing much speed. See below for more details. This postgresql-hll extension was originally developed by the Science team from Aggregate Knowledge, now a part of Neustar. Please see the acknowledgements section below for details about its contributors.

Maintainers

• Dan Molik (dan@d3fy.net) - Type: person

<pkgmetadata>
	<maintainer type="person">
		<email>dan@d3fy.net</email>
		<name>Dan Molik</name>
	</maintainer>
	<longdescription lang="en">
		This Postgres module introduces a new data type hll which is a HyperLogLog
		data structure. HyperLogLog is a fixed-size, set-like structure used for
		distinct value counting with tunable precision. For example, in 1280 bytes hll
		can estimate the count of tens of billions of distinct values with only a few
		percent error.

		In addition to the algorithm proposed in the original paper, this
		implementation is augmented to improve its accuracy and memory use without
		sacrificing much speed. See below for more details.

		This postgresql-hll extension was originally developed by the Science team
		from Aggregate Knowledge, now a part of Neustar. Please see the
		acknowledgements section below for details about its contributors.
	</longdescription>
</pkgmetadata>

Lint Warnings

• [Warning] USE flag 'static-libs' in ebuild 2.18 is not documented in metadata.xml
• [Error] Missing md5-cache for ebuild postgresql-hll-2.18

USE Flags

Manage flags for this package: euse -i <flag> -p dev-db/postgresql-hll | euse -E <flag> -p dev-db/postgresql-hll | euse -D <flag> -p dev-db/postgresql-hll

Manifest