Re: Hi guys! I am planning to set up a cluster usi...

dhirajk · ‎12-07-2018

I followed this URL and rolled over my sample Ranger KMS key. https://docs.hortonworks.com/HDPDocuments/HDP3/HDP-3.0.1/configuring-hdfs-encryption/content/rolling_over_an_existing_key.html Is there any command or any way to check the version of encrypting key? Please share the information. Thanks in advance.

dhirajk · ‎11-05-2018

If we configure Queue Mapping for Groups to Specific Queues and if a user is part of different groups that are assigned to different queues, then where do user submitted jobs go? user1 is part of group1 mapped to queue 1, also user1 is part of group2 mapped to queue2. If user1 submits a job then where does this job runs in queue1 or queue2? also please share the other possibilities. Thanks, Dhiraj.

dhirajk · ‎10-26-2018

@Anurag Mishra Thanks for the detailed steps, but will snapshot take cares of DDLs too? or do we need to take a DDL and create it manually in the destination cluster? Thanks, Dhiraj.

dhirajk · ‎09-27-2018

Hi, Need help with HBase data migration from one cluster to other cluster. Please share the instructions or any proper articles. Thanks.

dhirajk · ‎06-12-2018

Can we install HiveServer2 and HiveServer2Interactive on the same host? HDP - 2.6.3 Thanks in Advance.

dhirajk · ‎03-29-2018

How to connect Phoenix Query Server using ODBC in Kerberos environment, Please share an article with complete details or process with brief steps. Thanks in advance.

dhirajk · ‎02-07-2018

Hi Lunesa, As you mentioned, you can use 1 server for Ambari Operation Server. 3 Servers for Master Services and 3 for DataNode and Node Manager. If you are planning to setup HA for NameNode and Resource Manager and installing core Hadoop services then you can use a similar model, You can add one more server, in case if you need standalone Ambari views or server for all Hadoop clients. I am planning to use below model to setup sandbox environment. Server 1. Ambari Server Server 2. Active NameNode, Standby Resource Manager, Journal Node, Zookeeper Server, ZKFailoverController. Server 3. Standby NameNode, Active Resource Manager, History Server, App Timeline Server, Journal Node, Zookeeper Server, ZKFailoverController. Server 4. HiveServe2, Hive Metastore, JournalNode, Zookeeper Server, WebHcat Server etc. Server 5. DataNode, NodeManager and other slave components. Server 6. DataNode, NodeManager and other slave components. Server 7. DataNode, NodeManager and other slave components. Server 8: Standalone Ambari Views Server and all Hadoop Clients (Clients like HDFS, Hive etc). (Additional Server) Explore Hortonworks documents on how to setup Ambari and HDP cluster: https://docs.hortonworks.com/ Thanks, Dhiraj.

dhirajk · ‎02-07-2018

How to run the benchmarking tests Teragen, Terasort, and TestDFSIO in Hadoop cloud clusters.

dhirajk · ‎12-06-2017

Please refer https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.3/bk_hive-performance-tuning/content/ch_hive-perf-tuning-intro.html Above link have Prerequisite and steps for HiveServer2 Interactive

dhirajk · ‎12-06-2017

Please share documents/Articles for setting up NameNode HA and Resource manager HA using Ambari. Is the complete process can be done using Ambari? simply by pressing Enable NN HA and followed by routine steps, or do we need to run any additional manual steps in NN Server? Note: Cluster is kerberized, also HBase is installed. Do we need to follow any additional steps in this case? Ambari Version 2.6 HDP Version 2.6.3 Thanks in Advance.

dhirajk · ‎11-09-2017

Please share a method or command to change the service account values in the cluster. While installing HDP 2.6.3, I have used the value for Smoke user as "ambari-qa" and value for Ambari metrics user as "ams", but I want to change it to "ambariqa" and "amshdp". Is there any command or method to change the value of service account? HDP version - 2.6.3 Ambari Version - 2.6.0.0 Thanks in advance.

dhirajk · ‎10-19-2017

Reason for format ZKFC is, Adding service rpc port property in NN: Please look for service rpc port in below link. https://community.hortonworks.com/articles/43838/scaling-the-hdfs-namenode-part-1.html

dhirajk · ‎10-19-2017

To reset ZKFC we have to stop both the ZKFC processes and run the following command as the hdfs super user : hdfs zkfc –formatZK Is this same for Kerberos enabled environment? Do we need to stop all HDFS Services and failover control? Where do we need to run this command in NN or anywhere? HDP Version - 2.4.3 Thanks in advance.

dhirajk · ‎09-19-2017

We have 2 Ambari views instances, So planning to implement Reverse Proxy for 2 Ambari Views Servers. Please share the steps. Thanks in Advance.

dhirajk · ‎08-31-2017

@Sridhar Reddy hbase-daemon.sh is available in given location, But I don't see graceful_stop.sh? Hbase Version is 1.1.2 HDP-2.4.3.0

dhirajk · ‎08-30-2017

Are there any extra steps need to be followed for implementing Ranger Authentication with LDAP for SSL based cluster, DO we need to upload any certs. If yes can you please share the implementation steps in detail. Thanks.

dhirajk · ‎08-29-2017

is it possible to Perform a graceful stop decommission using Ambari.

dhirajk · ‎08-09-2017

Creating new Ambari views instance and using the same database of existing Ambari views instance. is this possible in Ambari 2.4.3, Please share the process or article. Thank you.

dhirajk · ‎08-08-2017

As I know delegate admin user cannot add new policy for new paths but can add more paths under the main path for Ranger policy. My Question is, Can delegate admin user will able to manage "selecting and changing user/group and permissions" in Ranger policy ?

dhirajk · ‎08-07-2017

Thanks for the comment @Sridhar Reddy, will let you once i try this.

dhirajk · ‎08-04-2017

I have decommissioned Node(DataNode and NodeManager) using Ambari, After decommission is successful. The status in NameNode UI and RM UI got updated saying: NameNode - "DeadNodes : 3 (Decommissioned)" RM UI - "Decommissioned Nodes 3" Later I had deleted Decommissioned Nodes from Ambari. At present, NameNode UI status got updated saying: NameNode - "DeadNodes : 0 (Decommissioned)" But RM UI is still remained same: RM UI - "Decommissioned Nodes 3" is there any Amber UI issue ?? or do I need to perform any additional steps ??

dhirajk · ‎08-01-2017

is it possible to have both local and LDAP ID for Ranger Authentication? Right now I am logging into Ranger UI with my local ID and planning to implement ranger authentication using LDAP. After implementation of Ranger authentication with LDAP, I will be able to login Ranger UI with my LDAP ID. what my question is, will my Local ID still work? After changing Ranger authentication method to LDAP.

dhirajk · ‎07-21-2017

Thank you.

dhirajk · ‎07-20-2017

Rolling Vs Express Upgrade Please suggest some good material that gives differences between the two approaches and which approach to use when.

dhirajk · ‎07-20-2017

Is there any procedure to clone an existing Ambari Views? If Yes can any one please share related documents or procedure. Ambari Version 2.4 Thank you.

dhirajk · ‎07-18-2017

@Sindhu Yes, idea is to drop the database and all tables within and to remove the db directory from HDFS too.

dhirajk · ‎07-17-2017

Please follow this Document by Hortonworks to set up config groups: https://docs.hortonworks.com/HDPDocuments/Ambari-2.4.1.0/bk_ambari-user-guide/content/using_host_config_groups.html

dhirajk · ‎07-13-2017

@Sridhar Reddy Using cascade for dropping DB will delete the entire directory of DB in given HDFS location and also data of other DB which are in/under that location of dropped DB. So it is not recommended to use CASCADE for dropping DB.

dhirajk · ‎07-12-2017

@Sridhar Reddy I know, CASCADE will help in dropping the database with tables in it. Is this an only way or are there any best practices?

dhirajk · ‎07-12-2017

@Sridhar Reddy

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Re: Hi guys! I am planning to set up a cluster usi...

How to check version of a Ranger KMS key?

YARN Queue Mapping based on Group

Re: HBase data migration from one cluster to other...

HBase data migration from one cluster to other clu...

Can we install HiveServer2 and HiveServer2Interact...

How to connect Phoenix Query Server using ODBC

Re: Hi guys! I am planning to set up a cluster usi...

How to run the benchmarking tests Teragen, Terasor...

Re: Hive 2 is missing after HDP upgrade

NameNode, Resource Manager HA setup

How to change Services Account values

Re: Format ZKFC(hdfs zkfc –formatZK ) in Kerberos ...

Format ZKFC(hdfs zkfc –formatZK ) in Kerberos envi...

Reverse Proxy for Ambari Views.

Re: Decommission of Region Server

Ranger Authentication using LDAP for SSL based clu...

Decommission of Region Server

Creating new Ambari views instance. (using the sam...

Can delegate admin user will able to manage "selec...

Re: Decommissioned node, Decommission status of No...

Decommissioned node, Decommission status of Node i...

Is it possible to have both local and LDAP ID for ...

Re: Cloning an existing Ambari Views.

Rolling Vs Express Upgrade

Cloning an existing Ambari Views.

Re: How to Drop Hive Database with Tables in it ?

Re: slave nodes with different hardware

Re: How to Drop Hive Database with Tables in it ?

Re: How to Drop Hive Database with Tables in it ?

Re: How to Drop Hive Database with Tables in it ?