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Flume >> mail # dev >> Unique row key

Sri Ramya 2013-02-14, 04:35
Ralph Goers 2013-02-14, 06:27
Madhu Gmail 2013-02-14, 13:11
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Re: Unique row key
Only on a single machine with a single cpu. Multiple machines could still generate the same value. Multiple threads on the same machine could generate the same value.

The uuid log4j 2 uses accounts for this. The Cassandra FAQ wiki page discusses using a uuid but the project it references is unfortunately not thread safe - at least the last I checked.


On Feb 14, 2013, at 5:11 AM, Madhu Gmail <[EMAIL PROTECTED]> wrote:

> you can use time stamp along with nano seconds  which would give unique row key.
> Madhu  Munagala
> (214)679-2872
> On Feb 13, 2013, at 10:35 PM, Sri Ramya <[EMAIL PROTECTED]> wrote:
>> hi,
>> How to generate a unique row key for every event in flume- ng??
>> So that i can store data into cassandra.
>> Thank you