Fix summary of driver counts in query info
Fix blocked writer leaks in SharedBuffer

Remove old unused buffer apis
[maven-release-plugin] prepare release 0.48
[maven-release-plugin] prepare for next development iteration
Protect against bad Hadoop input formats
[maven-release-plugin] prepare release 0.49
[maven-release-plugin] prepare for next development iteration
Make data source creation more readable
Cleanup AbstractConfigurationAwareModule
Remove MetadataResource
Refactor MetadataDaoUtils
Remove extra database aliases
Rename annotation for LocalStorageManager
Incomplete extraction of CoordinatorModule
Change default max split size
Remove legacy config names
Improve speed of TABLESAMPLE tests
Long/Double Approximate Average Operators
Fix license of ClassInfoLoader
Update README