The bit array data structure is implemented in Java as the BitSet class. Unfortunately, this fails to scale without compression.
JavaEWAH is a word-aligned compressed variant of the Java bitset class. It uses a 64-bit run-length encoding (RLE) compression scheme.
The goal of word-aligned compression is not to achieve the best compression, but rather to improve query processing time. Hence, we try to save CPU cycles, maybe at the expense of storage. However, the EWAH scheme we implemented is ...
Artifacts using JavaEWAH version 0.3.2 (9)
Hive is a data warehouse infrastructure built on top of Hadoop see
http://wiki.apache.org/hadoop/Hive
Last Release on Apr 8, 2014
Relocated → org.spark-project.hive »
hive-exec
This bundle will export packages from javaewah.jar
Last Release on Feb 24, 2013
Relocated → com.googlecode.javaewah »
JavaEWAH
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