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Re: Best practices to work Sqoop, HDFS and Hive

by Master Mentor in Support Questions
‎03-02-2017 12:58 PM
‎03-02-2017 12:58 PM
Here's a good article for that https://community.hortonworks.com/articles/85165/scheduled-incremental-ingestion-of-ms-sql-data-to.html ... View more

Re: Hbase get operation performence

by Master Mentor in Support Questions
‎03-02-2017 08:58 AM
‎03-02-2017 08:58 AM
Then the opposite is true, if you only have 100mb of data, why do you need so many regions? Typically in HDP we default to 10GB per region. ... View more

Re: Hbase get operation performence

by Master Mentor in Support Questions
‎03-02-2017 08:32 AM
‎03-02-2017 08:32 AM
HBase scales as the number of RS goes up, with only two RS, I can't think of any way to make things faster. Do you need to fetch all of the column? Typically, you'd want to move less-frequently column data to either to its own table or new column family. That way only most relevant data is being fetched. That also makes single row span multiple files thereby improving IO. ... View more

Re: SmartSense for Mobile Phones

by Master Mentor in Support Questions
‎03-01-2017 02:11 PM
‎03-01-2017 02:11 PM
If you can browse to Ambari on your phone you should be able to see alerts, you can also receive email alerts. Smartsense does not have a mobile version, you can use one of the supported browsers http://docs.hortonworks.com/HDPDocuments/SS1/SmartSense-1.3.1/bk_installation/content/browser_requirements.html ... View more

Re: Hbase get operation performence

by Master Mentor in Support Questions
‎03-01-2017 02:06 PM
‎03-01-2017 02:06 PM
I'm afraid we need more info from you, like how your regions are split, how big is your cluster, are you writing all your rows to one RS. ... View more

Re: Has anyone had any experiences with connecting...

by Master Mentor in Support Questions
‎03-01-2017 02:02 PM
‎03-01-2017 02:02 PM
There are a few examples available on HCC, here's one my colleague created https://community.hortonworks.com/content/kbentry/47854/accessing-facebook-page-data-from-apache-nifi.html ... View more

Re: Block users from creating new notebooks in Zep...

by Master Mentor in Support Questions
‎03-01-2017 03:36 AM
‎03-01-2017 03:36 AM
More specifically http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_zeppelin-component-guide/content/config-access-control-notes.html ... View more

Re: Block users from creating new notebooks in Zep...

by Master Mentor in Support Questions
‎03-01-2017 03:34 AM
‎03-01-2017 03:34 AM
Yes, please take a look at http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_zeppelin-component-guide/content/config-access-control.html ... View more

Re: Generic SqlManager.listDatabases() not impleme...

by Master Mentor in Support Questions
‎03-01-2017 01:31 AM
‎03-01-2017 01:31 AM
Netezza list-databases command is not supported, please see the sqoop user guide for special note https://sqoop.apache.org/docs/1.4.6/SqoopUserGuide.html#_example_invocations_8 I am curious whether using --direct mode implemented the list-databases option, please try and if you can report back. Note This only works with HSQLDB, MySQL and Oracle. When using with Oracle, it is necessary that the user connecting to the database has DBA privileges. ... View more

Re: Hbase Region Server and Data Node Decommission

by Master Mentor in Support Questions
‎02-28-2017 09:12 PM
1 Kudo
‎02-28-2017 09:12 PM
1 Kudo
1. Yes, you have to go to host and decommission RS first, it will put HBase RS into drain mode, then you can continue with decommissioning DN. 2. RS can live without DN but due to data locality it is best to coexist 3.see #1 https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_administration/content/ch_slave_nodes.html ... View more
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Last Visited ‎08-15-2019 06:35 AM
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