Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@cassandra.apache.org
Received-SPF: pass (nike.apache.org: domain of jiangc@gmail.com designates
 209.85.220.172 as permitted sender)
MIME-Version: 1.0
In-Reply-To: 
 <CAO5xsd0et06gzKCFL2txuSNX+ty5XBBhLUPiR8qZ3hRU9J0Etg@mail.gmail.com>
References: 
 <CAKK9U-AgP+CzaxOxUDeXfQ8ycN_8YSsufj00p=O-Le=92BD__w@mail.gmail.com>
	<CAO5xsd3HUtY7=mNHLXEwRGgJycshrFDfkwzUPuxdpWoVX=Sh7w@mail.gmail.com>
	<CAAam9ssMAoFhSNfeDMtQLMNmsHQOVKeOq5oev5sUmJPK9H3J4g@mail.gmail.com>
	<CAKK9U-CPRKBb4O86-Mo9F8toP6SjUuj02rkSBq+tYL+JKGdX7w@mail.gmail.com>
	<CAO5xsd0et06gzKCFL2txuSNX+ty5XBBhLUPiR8qZ3hRU9J0Etg@mail.gmail.com>
Date: Tue, 30 Aug 2011 09:57:38 -0400
Message-ID: 
 <CAKK9U-ChL_RNOiX=SD8vWheDc1xRqqQ45CsnVLDypCR5tH_W6w@mail.gmail.com>
Subject: Re: Updates lost
From: Jiang Chen <jiangc@gmail.com>
To: user@cassandra.apache.org
Content-Type: text/plain; charset=ISO-8859-1

It's a single node. Thanks for the theory. I suspect part of it may
still be right. Will dig more.

On Tue, Aug 30, 2011 at 9:50 AM, Peter Schuller
<peter.schuller@infidyne.com> wrote:
>> The problem still happens with very high probability even when it
>> pauses for 5 milliseconds at every loop. If Pycassa uses microseconds
>> it can't be the cause. Also I have the same problem with a Java client
>> using Pelops.
>
> You connect to localhost, but is that a single node or part of a
> cluster with RF > 1? If the latter, you need to use QUORUM consistency
> level to ensure that a read sees your write.
>
> If it's a single node and not a pycassa / client issue, I don't know off hand.
>
> --
> / Peter Schuller (@scode on twitter)
>