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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] Updated: (ZOOKEEPER-327) document effects (latency) of storing large amounts of data in znodes
Date Thu, 05 Mar 2009 22:39:56 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Hunt updated ZOOKEEPER-327:
-----------------------------------

    Fix Version/s:     (was: 3.1.1)

> document effects (latency) of storing large amounts of data in znodes
> ---------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-327
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-327
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: documentation
>            Reporter: Patrick Hunt
>            Priority: Minor
>             Fix For: 3.2.0
>
>
> znodes have max 1mb of data storage. using zk to store large amounts of data can negatively
impact latency as seen by clients - the server needs to serve the data. often it's a better
idea to store a "token" (say a uri) in the znode pointing to a large data block stored elsewhere
(filesystem? memcached, etc...) this offloads zk and reduces latency impact
> we should have details of this in the forrest docs.

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