About manish1

manish1 · ‎07-07-2017

@Jorge Luis Hernandez Olmos I'm happy it worked for you. Sometimes, it happens and I always prefer to take care of mysql from CLI first. As always, if you find this post helpful, don't forget to "accept" answer.

manish1 · ‎07-06-2017

@Jorge Luis Hernandez Olmos Please check the log file (usually at /var/log/mysql/) and look for the actual error. Also check if there any stale instance of mysqld, is already running. To check this, please execute following command: ps -ef | grep mysql If you find any running instance then try to stop mysqld gracefully and if it does not work then kill the daemon. Now try again to start mysql from Ambari.

manish1 · ‎07-06-2017

@Smart Solutions No changes would be required for ZooKeeper. Unfortunatley, load-balancing of Hive Server2 feature is not available in HDP currently. Hopefully in future release. As always, if you find this post helpful, don't forget to "accept" answer.

manish1 · ‎07-05-2017

@pavan p As gnovak mentioned, you can track long running jobs from ResourceManager UI. Here are the steps: 1. Login to Ambari 2. Click on YARN (under Services) 3. Click on Quick Links 4. Click on resource Manager UI 5. By default you will see a list of all submitted jobs 6. Click on "Jobs -> Running" from left hand side menu. It will show you all jobs which are running currently. 7. Then click on sort by StartTime. Please let me know if it works for you.

manish1 · ‎07-05-2017

Your Network team can create a DNS Name and can add both the hiverserver2 IPs under this DNS in either round robin or load-balance mode. Then, you can use the DNS name and 10000 port in the Knox configuration to submit hive jobs. It should provide what you are looking for. Please let me know.

manish1 · ‎06-12-2017

I would to like to install and configure all the services using LDAP service accounts and they are not default local accounts like (hdfs -> opthdfs, hive -> opthive etc..). I'm installing using Ambari. I was able to replace most of the default service account with the LDAP service accounts. But, could not find a way to use custom service accounts for Livy server and Zeppelin. Is there any way to use custom service account for these services using Ambari?

manish1 · ‎03-02-2017

Awesome. Thanks for the link.

manish1 · ‎03-02-2017

Thanks @Deepak Sharma How about Hive HA? Does Zookeeper do the same for Multiple Hive Server2 & Hive-Metastore? What changes do we need to make at client side for Hive HA?

manish1 · ‎03-02-2017

HBase HA documentation says: "Once running two or more HBase Masters, HBase uses ZooKeeper for coordination of the active Master." Can you give me more detail on how to use Zookeeper to coordinate two HBase master servers? Also what changes a client program needs to make, which was referring to the original HBase Master earlier? For example: After making NN HA, we always use nameservice, instead of nn1 or nn2.

manish1 · ‎12-31-2016

@vamsi valiveti a> This slide is from Hortonworks Training course. The course/slides are available to paid customers only. b> i> there is nothing like grouping ii> Shuffle happens when data move from Map to reduce (please see the diagram) and Merge happens during sort phase at Reducer side.

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