Replace AppendableByteArrayInputStream in DirectDruidClient
* Replace with SequenceInputStream fueled by an enumeration of ChannelBufferInputStream which directly wrap the response context ChannelBuffer
ignore benchmark
move IndexTask to use hashed partition; fixes #815
Merge pull request #870 from metamx/fix-index-task

move index task to use hashed partition; fixes #815
Merge remote-tracking branch 'origin/master' into hllSpeedupRebase
Merge remote-tracking branch 'origin/directDruidClientSpeedup' into hllSpeedupRebase
Modify TopNQueryQueryToolChest to use Arrays instead of Lists
Modify TopNQueryQueryToolChest to use Arrays instead of Lists