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From "Ye Liang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-12767) Cassandra Java Driver 3.1.0 Client-Side timestamp generation issue
Date Tue, 11 Oct 2016 02:07:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15564173#comment-15564173
] 

Ye Liang edited comment on CASSANDRA-12767 at 10/11/16 2:06 AM:
----------------------------------------------------------------

Thank you very much,I specify a server-side timestamp generator to solve this problem.
I notice that when i use a client-side timestamp generator,the cassandra driver still attach
a client-side timestamp to my insert request(with ifnotexist),i want to know when will this
timestamp be replaced to a server-side timestamp.I think it will be replaced in cassandra
server side,if true,can you tell me the source code segment about this in Cassandra2.1.15
source code?


was (Author: lyss):
Thank you very much,I specify a server-side timestamp generator to solve this problem.
I notice that when i use a client-side timestamp generator,the cassandra driver still attach
a server-side timestamp to my insert request(with ifnotexist),i want to know when will this
timestamp be replaced to a server-side timestamp.I think it will be replaced in cassandra
server side,if true,can you tell me the source code segment about this in Cassandra2.1.15
source code?

> Cassandra Java Driver 3.1.0 Client-Side timestamp generation issue
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-12767
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12767
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Cassandra 2.1.15
> Cassandra Java Driver 3.1.0
>            Reporter: Ye Liang
>            Priority: Minor
>
> I use cassandra driver java to do some insert operation.I notice that Cassandra Java
Driver use client-side timestamp as default.
> I make my client server one hour ahead than my cassandra server,then i insert some record
to an exist table and use sstable2json tool to check my record ' s timestamp.
> i find out that if i insert a record with ifnotexist,the record's timestamp used server-side
timestamp,otherwise it use client-side timestamp.
> I think this is a very strange result.



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