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Sri Ramya 2013-02-14, 04:35
hi,
How to generate a unique row key for every event in flume- ng??
So that i can store data into cassandra.
Thank you
Madhu Gmail 2013-02-14, 13:11
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
Ralph Goers 2013-02-14, 13:45
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.
Ralph
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
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