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From DuyHai Doan <doanduy...@gmail.com>
Subject Re: Oracle TIMESTAMP(9) equivalent in Cassandra
Date Thu, 29 Oct 2015 11:42:49 GMT
You can use TimeUUID data type and provide the value yourself from client
side.

The Java driver offers an utility class
com.datastax.driver.core.utils.UUIDs and the method timeBased() to generate
the TimeUUID.

 The precision is only guaranteed up to 100 nano seconds. So you can have
possibly 10k distincts values for 1 millsec. For your requirement of 20k
per sec, it should be enough.

On Thu, Oct 29, 2015 at 12:10 PM, <chandrasekar.krc@wipro.com> wrote:

> Hi,
>
>
>
> Oracle Timestamp data type supports fractional seconds (upto 9 digits, 6
> is default). What is the Cassandra equivalent data type for Oracle
> TimeStamp nanosecond precision.
>
>
>
> This is required for determining the order of insertion of record where
> the number of records inserted per sec is close to 20K. Is TIMEUUID an
> alternate functionality which can determine the order of record insertion
> in Cassandra ?
>
>
>
> Regards, Chandra Sekar KR
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