Since this is the community that's likely to be interested, I wanted to
spread some word about a project I've been working on in my spare time:
Cosmos.
https://github.com/joshelser/cosmos
The point of Cosmos is to provide an efficient, easy-to-use interface
around Accumulo for the general purpose of counting and filtering of a
data set. At a glance, it accepts Multimaps of data, and provides
mechanism to fetch records by column, fetch records by column with value
filtering, and count unique values across records in a column (groupBy).
It also contains a very simple internal timing/tracing API (much less
granular than Accumulo's tracing library), and a (very) rough web
interface for viewing said traces. Additionally, Cosmos contains a
simple example of its API using a public dataset of ~350K records
provided by the city of Chicago (https://data.cityofchicago.org/).
Cosmos' design lends itself well to multiple users accessing the same
Accumulo instance, deferring to Accumulo or ZooKeeper to do
synchronization/persistence when necessary. It aims at abstracting some
of the difficulty in using Accumulo away from the user to make the
application developer's life a bit easier.
And, as you'd expect, Apache licensed and compatible with Apache
Accumulo 1.4.4 and 1.5.0.
I'd love to hear what people think. Any feedback is welcome.
- Josh
