question How to create Namespace in hbase? in Archives of Support Questions (Read Only)

How to create Namespace in hbase?

rammohanciber — Fri, 07 Oct 2016 11:13:55 GMT

Need steps for creation of the Namespace.

Re: How to create Namespace in hbase?

sunile_manjee — Fri, 07 Oct 2016 11:16:16 GMT

@Rammohan Reddy This is documented here

http://hbase.apache.org/book.html#_namespace

Just go to hbase shell and execute command.

21.1. Namespace management

A namespace can be created, removed or altered. Namespace membership is determined during table creation by specifying a fully-qualified table name of the form:

<code><table namespace>:<table qualifier>

Example 12. Examples

<code>#Create a namespace
create_namespace 'my_ns'

<code>#create my_table in my_ns namespace
create 'my_ns:my_table', 'fam'

<code>#drop namespace
drop_namespace 'my_ns'

<code>#alter namespace
alter_namespace 'my_ns', {METHOD => 'set', 'PROPERTY_NAME' => 'PROPERTY_VALUE'}

Re: How to create Namespace in hbase?

rammohanciber — Fri, 07 Oct 2016 12:49:23 GMT

Thanks Sunile for the information.

Re: How to create Namespace in hbase?

rammohanciber — Fri, 07 Oct 2016 12:49:56 GMT

Thanks for the information Sunile

Re: How to create Namespace in hbase?

LesterMartin — Sun, 05 Mar 2017 08:50:26 GMT

As a quick follow-up to @Sunile Manjee's perfect answer, check out https://martin.atlassian.net/wiki/x/0zToBQ for how to grant DBA-level privileges to these new namespaces. Heck, here it is in from the shell's perspective.

grant 'the_username', 'RWXC', '@my_ns'

Re: How to create Namespace in hbase?

geko — Wed, 26 Apr 2017 21:23:38 GMT

Hi,

although @Lester Martin and @Sunile Manjee answered perfectly, just a minor addition. If you want to assign privileges to a _group_ instead of single user, then also use '@'-prefix, like e.g.:

grant '@admingroup', 'RWXC', '@my_ns'

Re: How to create Namespace in hbase?

aps — Fri, 06 Jul 2018 20:39:25 GMT

Will it be possible to create namespace on the custom hdfs path ?