Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Plain View
Flume >> mail # user >> Re: Unique row key


Twitter had opensourced snowflake back in 2010
https://github.com/twitter/snowflake
The repo hasn't been updated in a while, but I do see a fork, which
has been fairly actively developed.
https://github.com/dgkim84/snowflake

On Thu, Feb 14, 2013 at 8:45 AM, Ralph Goers <[EMAIL PROTECTED]> wrote:
> 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
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB