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From Zhong Li <...@voxeo.com>
Subject Re: data deleted came back after 9 days.
Date Tue, 17 Aug 2010 16:35:13 GMT
<GCGraceSeconds>864000</GCGraceSeconds>
It is default  10 days.

I checked all system.log, all nodes are connected, although not all  
the time, but they reconnected after a few minutes. None of node  
disconnected more than GC grace seconds.

Best,

On Aug 17, 2010, at 11:53 AM, Peter Schuller wrote:

>>> We have 10 nodes cross  5 datacenters. Today I found a strange  
>>> thing. On
>>> one node, few data deleted came back after 8-9 days.
>>>
>>> The data saved on a node and retrieved/deleted on another node in  
>>> a remote
>>> datacenter. The CF is a super column.
>>>
>>> What is possible causing this?
>
> What is your GC grace seconds set to? Is it lower than 8-9 days, and
> is it possible one or more nodes were disconnected from the remainder
> of the cluster for a period longer than the GC grace seconds?
>
> See: http://wiki.apache.org/cassandra/DistributedDeletes
>
> -- 
> / Peter Schuller


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