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Re: Is there a way to change a folder owner from A...

by Guru Guru in Support Questions
‎07-12-2016 09:40 PM
‎07-12-2016 09:40 PM
@Beverley Andalora Not possible from Ambari File View, but you can use linux command to change it hdfs dfs -chown [-R] [OWNER][:[GROUP]] PATH... Example: hdfs dfs -chown falcon /path/filename ... View more

Re: Datanode fails to start from command line but ...

by Guru Guru in Support Questions
‎07-11-2016 11:06 PM
‎07-11-2016 11:06 PM
One more thing I want to add is you need to run this using ambari user, in my case root otherwise if I used hdfs user I got same problem. I'm sure this has to do with file permissions. ... View more

Re: Datanode fails to start from command line but ...

by Guru Guru in Support Questions
‎07-11-2016 11:02 PM
‎07-11-2016 11:02 PM
@Xiaoyu Yao Correct, I was missing the config, thanks. I realize I could of also checked on the Operations Running if I clicked for more details. Thanks! ... View more

Datanode fails to start from command line but star...

by Guru Guru in Support Questions
‎07-11-2016 10:23 PM
1 Kudo
‎07-11-2016 10:23 PM
1 Kudo
I'm starting the datanode using /usr/hdp/2.4.2.0-258/hadoop/sbin/hadoop-daemon.sh start datanode I think there may be an environment variable related, but I also tried to source . /etc/hadoop/conf/./hadoop-env.sh Here is the complete error I'm getting: 2016-07-11 18:21:06,436 ERROR datanode.DataNode (DataNode.java:secureMain(2545)) - Exception in secureMain java.lang.RuntimeException: Cannot start secure DataNode without configuring either privileged resources or SASL RPC data transfer protection and SSL for HTTP. Using privileged resources in combination with SASL RPC data transfer protection is not supported. at org.apache.hadoop.hdfs.server.datanode.DataNode.checkSecureConfig(DataNode.java:1217) at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1103) at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:432) at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2423) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2310) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2357) at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2538) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2562) 2016-07-11 18:21:06,438 INFO util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1 2016-07-11 18:21:06,445 INFO datanode.DataNode (LogAdapter.java:info(47)) - SHUTDOWN_MSG: ... View more
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Re: In Sandbox, HDP 2.5, getting a Hive Cli error

by Guru Guru in Support Questions
‎07-06-2016 07:21 PM
2 Kudos
‎07-06-2016 07:21 PM
2 Kudos
@Timothy Spann Try setting hive.security.authorization.manager=org.apache.hadoop.hive.ql.security.authorization.plugin.sqlstd.SQLStdHiveAuthorizerFactory in hive-site and hive.security.authorization.enabled=false You can search on ambari Hive for those configurations and test after changing them. ... View more

Re: What client jars do I need to import in projec...

by Guru Guru in Support Questions
‎07-06-2016 01:11 PM
1 Kudo
‎07-06-2016 01:11 PM
1 Kudo
Thank you @Pierre Villard, I will try using maven instead of trying to resolve dependencies myself ... View more

What client jars do I need to import in project fo...

by Guru Guru in Support Questions
‎07-05-2016 05:37 PM
1 Kudo
‎07-05-2016 05:37 PM
1 Kudo
Found hadoop-core-1.0.3.jar is for v1 only, and haven't found which ones to use with v2. I got Sandbox, but could not fine the correct client jar to use. Could you please point it out? ... View more
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Re: Ambari Stale Alert

by Guru Guru in Support Questions
‎07-04-2016 06:10 PM
‎07-04-2016 06:10 PM
@Luis Picazo When there are large number of components, the alert checks do not space out and would fail more often. Did you restarted the ambari-agent? ... View more

Re: Ambari Stale Alert

by Guru Guru in Support Questions
‎07-04-2016 04:53 PM
‎07-04-2016 04:53 PM
@Luis Picazo First identify the Ambari Agent nodes which have got this problem. Then from Ambari 2.2 try increasing alter_grace_period from default of 5 seconds to 10. Can be modified in /etc/ambari-agent/conf/ambari-agent.ini Previous 2.2 see https://community.hortonworks.com/questions/9762/how-to-get-rid-of-stale-alerts-in-ambari.html ... View more

Re: FQDNs - are they necessary?

by Guru Guru in Support Questions
‎07-01-2016 08:59 PM
‎07-01-2016 08:59 PM
@ed day FQDN is required if you are not using DNS/reverse DNS. See: http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.2.0/bk_Installing_HDP_AMB/content/_check_dns.html Looks like you are not using DNS, make sure to run the command: hostname -f This should return the <fully.qualified.domain.name> you just set on each node of cluster. And should match /etc/hosts file. Also make sure the network file contains correct information: vi /etc/sysconfig/network NETWORKING=yes HOSTNAME=<fully.qualified.domain.name> I recommend you follow prepare environment part of the documentation step by step: http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.2.0/bk_Installing_HDP_AMB/content/_prepare_the_environment.html ... View more
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