add close method to aggregators
squigglies ftw
more squigglies
properly close rowiterators
close resources as we iterate over them
fix output timestamps in groupby queries with granularity "all".
fix per tier metrics emission for new balancer
refactor balancer metric emission code
Merge pull request #109 from metamx/fix-groupby-allgran-timestamp

fix output timestamps in groupby queries with granularity "all".
Merge pull request #107 from metamx/aggregator-close

add close method to aggregators
more logging in CEQR to track down NPE
Merge branch 'master' of github.com:metamx/druid
[maven-release-plugin] prepare release druid-0.3.27
[maven-release-plugin] prepare for next development iteration