[
https://issues.apache.org/jira/browse/HBASE-8015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14142204#comment-14142204
]
Andrew Purtell commented on HBASE-8015:
---------------------------------------
bq. Do different namespaces for the same table name create different tables
directories in hdfs and are maintained in different region files?
Yes
bq. How does this affect namenode memory if I want to have one namespace per
user and I have a million users registered to my system. Will this scale?
As you would anticipate, eventually not, depending on how many tables each user
creates and the capabilities of the namenode. I believe the intent of
namespaces is to support multitenancy where a tenant shares a namespace and is
a department or similar grouping within a larger organization. The namespace is
a supergroup of tables sharing common ACLs, quotas, and the like.
bq. I would like namespace to be totally logical separation all sharing the
same region file. Is this case?
No it is not and this would be a substantial change.
> Support for Namespaces
> ----------------------
>
> Key: HBASE-8015
> URL: https://issues.apache.org/jira/browse/HBASE-8015
> Project: HBase
> Issue Type: New Feature
> Reporter: Francis Liu
> Assignee: Francis Liu
> Attachments: HBASE-8015_draft_94.patch, Namespace Design.pdf
>
>
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
