java.lang.RuntimeException: org.apache.tez.dag.api.SessionNotRunning: TezSession has already shutdown. No cluster diagnostics found" for some of the jobs I am running. The cluster are heavily loaded. I am suspecting this to be some kind of time-out issue. Any pointer or tez setting that needs to be looked into would be helpful. From the log I can infer even the application has not started.Logs:16/04/09 14:15:11 WARN conf.HiveConf: HiveConf of name hive.semantic.analyzer.factory.impl does not existLogging initialized using configuration in file:/etc/hive/conf/hive-log4j.propertiesSLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/usr/hdp/22.214.171.124-2/hadoop/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:file:/usr/hdp/126.96.36.199-2/hive/lib/hive-jdbc-0.14.0.2.2.4.2-2-standalone.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]Exception in thread "main" java.lang.RuntimeException: org.apache.tez.dag.api.SessionNotRunning: TezSession has already shutdown. No cluster diagnostics found.