Get rid of getStringPoints and getNumericPoints from reader; improve instrumentation
Fix AstyanaxWriter instrumentation
Fix tests
Remove unused methods, whitespace fixes
Do not lock the entire map
clean up logging, modify metric namespacing
oops compiler error
Fix NPE
Merge pull request #179 from lakshmi-kannan/fix_NPE_PR175

Modify Instrumentation -- based off of PR 175