Hadoop QA commented on ZOOKEEPER-327:

+1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 787907.

    +1 @author.  The patch does not contain any @author tags.

    +0 tests included.  The patch appears to be a documentation patch that 
doesn't require tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of 
release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: 
Findbugs warnings: 
Console output: 

This message is automatically generated.

> 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
>            Assignee: Benjamin Reed
>            Priority: Minor
>             Fix For: 3.2.0
>         Attachments: ZOOKEEPER-327.patch
> 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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