Benjamin Coverston created CASSANDRA-10467:
----------------------------------------------
Summary: QoS for Queries
Key: CASSANDRA-10467
URL: https://issues.apache.org/jira/browse/CASSANDRA-10467
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Benjamin Coverston
Background: As an OLTP system that is based on pipelined execution worker pools
can be saturated with long(er) running calls. When the system is under stress,
those long running calls can make requests that should be short lived requests
take a much longer period of time.
Introduce the concept of QoS into Cassandra for client queries. A few ideas:
1. Allow clients to specify a QoS to be sent to Cassandra from the driver as
part of the protocol.
2. Allow different requests to be tagged based on some simple criteria (perhaps
configured) (i.e. ALLOW FILTERING was part of the query)
3. QOS based on the LUN that is accessed (SSDs get higher QOS than the RAID5)
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
