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From Jeff Jirsa <Jeff.Ji...@crowdstrike.com>
Subject Re: What's the format of Cassandra's timestamp, microsecond or millisecond?
Date Mon, 10 Aug 2015 16:00:23 GMT
The timestamp is arbitrary precision, selected by the client. If you’re seeing milliseconds
on some data and microseconds on others, then you have one client that’s using microseconds
and another on milliseconds – adjust your clients.



From:  "yhqruc@sina.com"
Reply-To:  "user@cassandra.apache.org", "yhqruc@sina.com"
Date:  Sunday, August 9, 2015 at 10:40 PM
To:  user
Subject:  What's the format of Cassandra's timestamp, microsecond or millisecond?

Hi, All:

    When I use cassandra.thrift API to manipulate the data, the timestamp is in millisecond.
It can be verified in cli:

[default@ks_wwapp] get cf_user['100031'];
=> (super_column=01#uid#,

     (name=0#d#, value=bf86010000000000, timestamp=1438689394196))



   When I use cli to set a column, the timestamp is in microseconds. Such as:

[default@ks_wwapp] get cf_user['100049'];
=> (super_column=sc_name,

     (name=c_name, value=635f76616c7565, timestamp=1439184495344000))



Now, I can't use cassandra.thrift API to update the key 100049. 

What's wrong with cassandra?



Thanks!




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