HIVE-6976: Show query id only when there's jobs on the cluster (Gunther Hagleitner, reviewed by Sergey Shelukhin)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1594102 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7011: HiveInputFormat's split generation isn't thread safe (Gunther Hagleitner, reviewed by Vikram Dixit K)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1594103 13f79535-47bb-0310-9956-ffa450edef68