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https://issues.apache.org/jira/browse/WAVE-399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836075#comment-13836075
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Yuri Zelikov commented on WAVE-399:
-----------------------------------

it wasn't high on priorities list since there's already a working file system 
based persistence and we still have stability issues with wave server.
I think that at the time the original persistence was implemented, MongoDb 
couldn't support write acknowledgment, which is crucial for keeping the deltas 
records consistent. 

> Mongodb delta store
> -------------------
>
>                 Key: WAVE-399
>                 URL: https://issues.apache.org/jira/browse/WAVE-399
>             Project: Wave
>          Issue Type: Improvement
>            Reporter: Frank Ren
>




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