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https://issues.apache.org/jira/browse/HBASE-4120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13143315#comment-13143315
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Ted Yu commented on HBASE-4120:
-------------------------------
In Performance_of_Table_priority.pdf attached to this JIRA, you can see
performance charts illustrating the benefits of table prioritization.
>From Liu Jia:
After we finished the HBase_isolation_and_allocation_user_guide.pdf there were
about twelve servers in the cluster,
and from the screen shots in the HBase_isolation_and_allocation_user_guide.pdf
you can see there are at least 700 regions on region server.
Prior to that we had two engineers working on this functionality for about 1.5
month.
Most of time, there are at least three projects running on this cluster.
Applications can share the cluster and run concurrently.
Some of the aplications like TaoBao's data cube has about 1TB data per month
and another application (user behavior tracking) has about 800GB data per day
but we only keep two days' data. The number of write requests is about 30000
per second,with record size of about 70B. These two aplications had run on this
cluster separately
for at least one month.
> isolation and allocation
> ------------------------
>
> Key: HBASE-4120
> URL: https://issues.apache.org/jira/browse/HBASE-4120
> Project: HBase
> Issue Type: New Feature
> Components: master, regionserver
> Affects Versions: 0.90.2, 0.90.3, 0.90.4, 0.92.0
> Reporter: Liu Jia
> Assignee: Liu Jia
> Fix For: 0.94.0
>
> Attachments: Design_document_for_HBase_isolation_and_allocation.pdf,
> Design_document_for_HBase_isolation_and_allocation_Revised.pdf,
> HBase_isolation_and_allocation_user_guide.pdf,
> Performance_of_Table_priority.pdf, System Structure.jpg, TablePriority.patch,
> TablePriority_v8_for_trunk.patch
>
>
> The HBase isolation and allocation tool is designed to help users manage
> cluster resource among different application and tables.
> When we have a large scale of HBase cluster with many applications running on
> it, there will be lots of problems. In Taobao there is a cluster for many
> departments to test their applications performance, these applications are
> based on HBase. With one cluster which has 12 servers, there will be only one
> application running exclusively on this server, and many other applications
> must wait until the previous test finished.
> After we add allocation manage function to the cluster, applications can
> share the cluster and run concurrently. Also if the Test Engineer wants to
> make sure there is no interference, he/she can move out other tables from
> this group.
> In groups we use table priority to allocate resource, when system is busy; we
> can make sure high-priority tables are not affected lower-priority tables
> Different groups can have different region server configurations, some groups
> optimized for reading can have large block cache size, and others optimized
> for writing can have large memstore size.
> Tables and region servers can be moved easily between groups; after changing
> the configuration, a group can be restarted alone instead of restarting the
> whole cluster.
> git entry : https://github.com/ICT-Ope/HBase_allocation .
> We hope our work is helpful.
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