He Liangliang created HBASE-9817:
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Summary: Add throughput quota and enforce hard limits
Key: HBASE-9817
URL: https://issues.apache.org/jira/browse/HBASE-9817
Project: HBase
Issue Type: New Feature
Components: Coprocessors
Reporter: He Liangliang
Assignee: He Liangliang
There is planning to add region count and table count quota mentioned in
HBASE-8410. However, it's also quite useful to control the requesting
throughput inside the region server. For example, we don't want a data dumping
task affecting the online services and it's better to enforce the throughput
quota inside HBase. Another common scenario is multi-tenancy, i.e. a cluster is
shared by multiple applications.
The following rules will be supported:
1. per user quota
limits the total read/write throughput initiated by a single user on any
table.
2. per (user, table) quota
limits the total read/write throughput initiated by a single user on a
specified table.
The implementation will use coprocessor to intercept and check each request on
each region. And each region server allocate a portion of quota from the total
specified quota (for that user or user + table) based on the portion of active
regions (the whole cluster or the specified table) assigned on that region
server. The request will be rejected or delayed if the limit is reached.
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