Fix edge cases in HLL folding

Make RabbitMQ Firehose resilient to broker deconnections

upgrade jetty version

Removed duplicated dependency

Improve ingestion MR job completion time.

CombineTextInputFormat instead of TextInputFormat combines multiple splits for a single mapper and reduces the strain on hadoop platform. It greatly improves job completion time as there are fewer number of mappers to bookkeep.

CombineTextInputFormat instead of TextInputFormat combines multiple splits for a single mapper and reduces the strain on hadoop platform. It greatly improves job completion time as there are fewer number of mappers to bookkeep.

upgrade jetty version to 9.1.5.v20140505

Add a context to force 2 pass algorithm for topNs

make timeline findOvershadowed a set

Snapshot coordinator state before running anything

fix BatchServerInventoryViewTest waitForSync() logic

Make tests pass with Java 8

changed the url for kafka wget (old one was 404)