KAFKA-727 broker can still expose uncommitted data to a consumer; reviewed by Neha Narkhede
KAFKA-714: ConsoleConsumer throws SocketTimeoutException when fetching topic metadata; reviewed by Neha Narkhede
KAFKA-730: Update zookeeper classpath in system_test/migration_tool_testsuite/0.7/bin/kafka-run-class.sh; reviewed by Neha Narkhede