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Posted to dev@zookeeper.apache.org by "Henry Robinson (JIRA)" <ji...@apache.org> on 2010/03/13 01:41:27 UTC
[jira] Created: (ZOOKEEPER-699) Optimizations for WAN Deployments
Optimizations for WAN Deployments
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Key: ZOOKEEPER-699
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-699
Project: Zookeeper
Issue Type: Wish
Reporter: Henry Robinson
Optimizations for WAN Deployments
Possible Mentor
Henry Robinson (henry at apache dot org)
Requirements
Java, some networking familiarity
Description
ZK 3.3.0 added observers which are non-voting members of a ZK ensemble. One use case for observers is as a proxy to a remote voting ensemble, say in a different data center. Since observers do not need to vote, there are less strict latency requirements on the delivery of messages to them. WAN traffic is also expensive. This project would investigate and implement batching of messages to observers, and potential mechanisms for decreasing the number of messages that need to be sent. For example, a destructive update to a znode twice in a row does not theoretically need to be sent twice - although making this work correctly with ZAB will be a challenge.
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[jira] Updated: (ZOOKEEPER-699) GSoC 2010: Optimizations for WAN
Deployments
Posted by "Henry Robinson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ZOOKEEPER-699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Henry Robinson updated ZOOKEEPER-699:
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Summary: GSoC 2010: Optimizations for WAN Deployments (was: Optimizations for WAN Deployments)
> GSoC 2010: Optimizations for WAN Deployments
> --------------------------------------------
>
> Key: ZOOKEEPER-699
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-699
> Project: Zookeeper
> Issue Type: Wish
> Reporter: Henry Robinson
>
> Optimizations for WAN Deployments
> Possible Mentor
> Henry Robinson (henry at apache dot org)
> Requirements
> Java, some networking familiarity
> Description
> ZK 3.3.0 added observers which are non-voting members of a ZK ensemble. One use case for observers is as a proxy to a remote voting ensemble, say in a different data center. Since observers do not need to vote, there are less strict latency requirements on the delivery of messages to them. WAN traffic is also expensive. This project would investigate and implement batching of messages to observers, and potential mechanisms for decreasing the number of messages that need to be sent. For example, a destructive update to a znode twice in a row does not theoretically need to be sent twice - although making this work correctly with ZAB will be a challenge.
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