HadoopDruidIndexerJob: Fix NPE
[maven-release-plugin] prepare release druid-0.4.12.1
[maven-release-plugin] prepare for next development iteration
DbConnectorConfig: Serialization is hard
[maven-release-plugin] prepare release druid-0.4.12.2
[maven-release-plugin] prepare for next development iteration
fix currSize bug and maxTime bugs
fix according to CR
[maven-release-plugin] prepare release druid-0.4.12.3
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release druid-0.4.12.4
[maven-release-plugin] prepare for next development iteration
Merge branch 'druid-0.4.12.x'

Conflicts:
	client/pom.xml
	common/pom.xml
	examples/pom.xml
	index-common/pom.xml
	indexer/pom.xml
	indexer/src/test/java/com/metamx/druid/indexer/HadoopDruidIndexerConfigTest.java
	merger/pom.xml
	pom.xml
	realtime/pom.xml
	server/pom.xml
	services/pom.xml