OpenTSDB/opentsdb — pull request #313 by jesse5e (2014-04-15 19:08:38+00:00)
Title: Fix incorrect downsampling unit

The bug incorrectly assumed the downsampling unit was second while computing
start and end time of HBase scan.
- Fixed the math.
- Suffixed the field name with _ms.
- Added unit tests to address the bug.
* downsample and downsampleMilliseconds.
- Added a nested helper class for unit tests to access private methods.
- Factored out the unit tests related to downsampling from the huge
TestTsdbQuery.java. It was too big for Eclipse to run.