@ARUNKUMAR RAMASAMY Good to take Ambari DB back up before going to start maintanance. ... View more

@Timothy Spann I don't think HDP supporting Pig on Spark http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.4.0/bk_spark-guide/content/ch_introduction-spark.html ... View more

data set size please? ... View more

Is NN OS RAID configured?if yes, then i don't think it's required any additional backup. Just FYI on what we are doing: 1) Our Master Nodes(NN & RM) are RAID configured 2) Taking DB ( ambari,Hue,OOzie etc) backup regularly. 3) HDFS Data backup using Falcon/distcp/Snapshot 4) /etc/hadoop/conf 5) /usr/hdp/2.3.4.0-3485/ I hope this will help:) ... View more

@Roberto Sancho Yes, We can take NN & DN Configurations backup /etc/hadoop/conf --for hadoop configuration files /usr/hdp/2.3.4.0-3485 --ref for all the jars like sqoop jars etc ... View more

@sameer lail Go to Ambari-> HDFS and search for dfs.datanode.data.dir then go to your Linux server and navigate to respective directories to see the data. Ex: [root@adcp DATA]# pwd /DATA [root@adcpDATA]#ls -lrt drwxr-xr-x. 3 root root 4096 Dec 15 2014 sdd1 drwxr-xr-x. 3 root root 4096 Dec 15 2014 sdc1 drwxr-xr-x. 3 root root 4096 Dec 15 2014 sdf1 drwxr-xr-x. 3 root root 4096 Dec 15 2014 sde1 drwxr-xr-x. 3 root root 4096 Dec 15 2014 sdg1 ... View more

Hue Officially version is available in HDP2.3.4 stack ... View more

Yes, Oozie is not yet integrated with Amabri, I think they will continue with Hue for couple of HDP releases. ... View more

In addition don't forget to re-start Amabri-server after making above mentioned changes. ... View more