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From Yang <teddyyyy...@gmail.com>
Subject Re: batch dump of data from cassandra?
Date Mon, 23 May 2011 06:14:30 GMT
Thanks Jonathan.

On Sun, May 22, 2011 at 9:56 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> I'd modify SSTableExport.serializeRow (the sstable2json class) to
> output to whatever system you are targeting.
>
> On Sun, May 22, 2011 at 11:19 PM, Yang <teddyyyy123@gmail.com> wrote:
>> let's say periodically (daily) I need to dump out the contents of my
>> Cassandra DB, and do a import into oracle , or some other custom data
>> stores,
>> is there a way to do it?
>>
>> I checked that you can do multi-get() but you probably can't pass the
>> entire key domain into the API, cuz the entire db would be returned on
>> a single thrift call, and probably overflow the
>> API? plus multi-get underneath just sends out per-key lookups one by
>> one, while I really do not care about which key corresponds to which
>> result, a simple scraping of the underlying SSTable would
>> be perfect, because I could utilize the file cache coherency as I read
>> down the file.
>>
>>
>> Thanks
>> Yang
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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