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From Jan Kesten <j.kes...@enercast.de>
Subject Re: Read after Write inconsistent at times
Date Fri, 24 Feb 2017 08:07:15 GMT
Hi,

are your nodes at high load? Are there any dropped messages (nodetool 
tpstats) on any node?

Also have a look at your system clocks. C* needs them in thight sync - 
via ntp for example. Side hint: if you use ntp use the same set of 
upstreams on all of your nodes - ideal your own one. Using pool.ntp.org 
might lead to minimal dirfts in time across your cluster.

Another thing that could help you out is using client side timestamps: 
https://docs.datastax.com/en/developer/java-driver/3.1/manual/query_timestamps/ 
(of course only when you are using a single client or all clients are in 
sync via ntp).


Am 24.02.2017 um 07:29 schrieb Charulata Sharma (charshar):
>
> Hi All,
>
> In my application sometimes I cannot read data that just got inserted. 
> This happens very intermittently. Both write and read use LOCAL QUOROM.
>
> We have a cluster of 12 nodes which spans across 2 Data Centers and a 
> RF of 3.
>
> Has anyone encountered this problem and if yes what steps have you 
> taken to solve it
>
> Thanks,
> Charu

-- 
Jan Kesten, mailto:j.kesten@enercast.de
Tel.: +49 561/4739664-0 FAX: -9 Mobil: +49 160 / 90 98 41 68
enercast GmbH Universitätsplatz 12 D-34127 Kassel HRB15471
http://www.enercast.de Online-Prognosen für erneuerbare Energien
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