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From Josh Elser <>
Subject Re: sync datacenter
Date Wed, 09 Sep 2015 16:35:27 GMT
The Import/Export route won't have any downtime on the "source" system. 
You can clone the source table, and use that to run the export. On the 
"destination" system, yes, you will only have the data since the last 

One thing I didn't think about before is that I'm not sure you can 
import to a table that already exists. If you're doing this on a regular 
schedule, you would have to do some extra coordination. These snapshots 
are full-snapshosts. There is no incremental snapshot support.

As the source table grow, yes, copying the data from one system to the 
other (typically, using distcp) will take more and more time.

The above limitations are the base for what the replication feature aims 
to solve. Import/Export table, however, are much more simple and 
well-tested than replication.

z11373 wrote:
> Thanks Josh for the links.
> It seems to me if we're going with ImportTable, it'll incur downtime when
> importing the data to target table?
> Also, the table is growing as the time goes, so the whole export/import
> table process may take longer time going forward, is that correct?
> Thanks,
> Z
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