This seems to be the real issue:

SEVERE: Mapped exception to response: 503 (Service Unavailable)
javax.ws.rs.WebApplicationException: java.io.IOException: 
java.lang.RuntimeException: java.lang.OutOfMemoryError: Direct buffer memory

If you're using a Sun JVM, you can change that by using the option 
-XX:MaxDirectMemorySize=<size>. By default, the size is 64M.

Best regards,

    - Andy


--- On Fri, 10/8/10, Jack Levin <magn...@gmail.com> wrote:

> From: Jack Levin <magn...@gmail.com>
> Subject: jstack of rest server thats toast.
> To: user@hbase.apache.org
> Date: Friday, October 8, 2010, 12:43 PM
> jstack http://pastebin.com/juF2JX0S and errors: http://pastebin.com/jiT3NeU1
> 
> After moderate load, rest server dies, any ideas why?
> 
> -Jack
> 


      

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