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Posted to dev@usergrid.apache.org by "Todd Nine (JIRA)" <ji...@apache.org> on 2015/10/13 21:22:05 UTC

[jira] [Updated] (USERGRID-1048) When reading messages from SQS an elevated consistency may be needed with latent replication

     [ https://issues.apache.org/jira/browse/USERGRID-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Nine updated USERGRID-1048:
--------------------------------
    Summary: When reading messages from SQS an elevated consistency may be needed with latent replication  (was: When reading messages from SQS under load an elevated consistency may be needed)

> When reading messages from SQS an elevated consistency may be needed with latent replication
> --------------------------------------------------------------------------------------------
>
>                 Key: USERGRID-1048
>                 URL: https://issues.apache.org/jira/browse/USERGRID-1048
>             Project: Usergrid
>          Issue Type: Story
>            Reporter: Todd Nine
>            Assignee: Todd Nine
>            Priority: Blocker
>
> Occasionally Cassandra multi-region replication lags during high load.  During this high load, messages fail to process because it cannot read the entity from Cassandra.  Rather than fail, we should retry with a high consistency level of quorum in all regions to ensure we replicate the data correctly.



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