@Huahua Wei Please login into the Grafana as admin, then go to Datasources and test connection. If that fails, instead of Ambari metrics collector hostname, try adding IP and see if you face the same issue. ... View more

@Anuraj Pandey Try this: cd /usr/lib/python2.6/site-packages/resource_monitoring/psutil make install ambari-metrics-monitor restart ... View more

I think the Spark exam is currently on HDP 2.4, which is Spark 1.6. https://community.hortonworks.com/questions/50206/which-version-of-spark-is-available-hdpcdspark.html ... View more

This is a bug: https://issues.apache.org/jira/browse/AMBARI-18387 Fixed in Ambari 2.5 ... View more

@MARUTHU PANDIYAN JAYARAMAN If nodemanager.recovery.enabled is set to true, please set it to false and try starting the nodemanager. This should get you unblocked. NM is failing during recovery: 2016-11-16 23:49:26,076 INFO recovery.NMLeveldbStateStoreService (NMLeveldbStateStoreService.java:initStorage(927)) - Using state database at /var/log/hadoop-yarn/nodemanager/recovery-state/yarn-nm-state for recovery 2016-11-16 23:49:26,299 INFO recovery.NMLeveldbStateStoreService$LeveldbLogger (NMLeveldbStateStoreService.java:log(969)) - Recovering log #362 2016-11-16 23:49:26,306 INFO recovery.NMLeveldbStateStoreService$LeveldbLogger (NMLeveldbStateStoreService.java:log(969)) - Delete type=3 #361 2016-11-16 23:49:26,306 INFO recovery.NMLeveldbStateStoreService$LeveldbLogger (NMLeveldbStateStoreService.java:log(969)) - Delete type=0 #362 2016-11-16 23:49:26,681 INFO service.AbstractService (AbstractService.java:noteFailure(272)) - Service org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService failed in state INITED; cause: org.iq80.leveldb.DBException: Invalid argument: not an sstable (bad magic number) org.iq80.leveldb.DBException: Invalid argument: not an sstable (bad magic number) ... View more

@Savanna Endicott I think you have set HADOOP_HOME:-/usr/hdp/current/hadoop It should be HADOOP_HOME:-/usr/hdp/current/hadoop-client linexec is under hadoop-client folder. ... View more

We checked this over webex on case yesterday. Issue was with structured-out-*.json. Ambari agent log indicated that the file that it was looking for is structured-out-<>.json. /var/lib/ambari-agent/data/structured-out-status.json to backup and restarted agent. This fixed this issue. ... View more