we get many error like EmulatedXAResource@64deb58f, error code TMNOFLAGS and transaction: [DataNucleus Transaction, ID=Xid=#, enlisted resources=[]] 2017-11-01 10:35:20,363 DEBUG [main]: DataNucleus.Transaction (Log4JLogger.java:debug(58)) - Running enlist operation on resource: org.datanucleus.store.rdbms.ConnectionFactoryImpl$EmulatedXAResource@64deb58f, error code TMNOFLAGS and transaction: [DataNucleus Transaction, ID=Xid=#, enlisted resources=[]] javax.jdo.JDODataStoreException: Error executing SQL query "select "DB_ID" from "DBS"". java.sql.SQLSyntaxErrorException: Table/View 'DBS' does not exist. Caused by: ERROR 42X05: Table/View 'DBS' does not exist. java.lang.RuntimeException: Error applying authorization policy on hive configuration: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient ... View more

yes the parameter is - log4j.appender.DRFA.MaxBackupIndex=30 , and we already restart the hive service , but still files under /var/log/hive not deleted , what are the other checked that we need to do here ? , and what is the frequency that proccess need to delete the files ? ... View more

@uri ben-ari, This value is calculated using the stack advisor 'yarn.nodemanager.resource.memory-mb' = int(round(min(clusterData['containers']* clusterData['ramPerContainer'], nodemanagerMinRam)))) ... View more

cheers @Jay Kumar SenSharma , that solved my other issue ... View more

I belive you need to figure why multiple Spark apps are running. If this is not a production cluster, and no one is going to get affected out of restarting SPARK, you can look into that option. But this just makes me to believe that the configuration settings for SPARK on how many SPARK apps are supposed to run is most probably the difference between two of your clusters. I am not an expert in SPARK to point you to the correct config to look for. ... View more

Jay not in this issue , but I will happy to get tour answer about my quastion from - https://community.hortonworks.com/questions/142356/how-to-recover-the-standby-name-node-in-ambari-clu.html ... View more