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Posted to dev@atlas.apache.org by Rishabh Bhardwaj <rb...@gmail.com> on 2016/01/22 07:20:43 UTC

Atlas with hbase/solr/kafka

Hi,

I have two instance of atlas (I1,I2) pointing to same hbase/solr/kafka as
backend.
When I am creating type/entity something from I1 they are not visible from
I2.
I need to restart the I2 to reflect and see the changes.
Can someone throw some light on this behaviour ? and what is to be done to
have both the instances (I1 & I2) to be in sync with hbase.
I read the HA document and it says at present ATLAS can have only one
active service and in future ATLAS wills support HA for webserive.
Do we have any JIRA open for above requirement ?

Thanks,
Rishabh.

Re: Atlas with hbase/solr/kafka

Posted by Hemanth Yamijala <yh...@gmail.com>.
Hi Rishabh,

There are several reasons why we are currently looking at a single *active*
instance of Atlas. The server caches a few types as an optimization. Also,
our current tests show an unlocked version of HBase as backing store for
Titan performs better. Until we find a way around some of these
constraints, it is likely to remain this way.

Please note that we are thinking of supporting an active-passive
arrangement of Atlas with automated failover for a reasonable HA solution.

What is your requirement for multiple *active* instances? Could you please
share your requirements / thoughts?

Thanks
hemanth

On Fri, Jan 22, 2016 at 11:50 AM, Rishabh Bhardwaj <rb...@gmail.com>
wrote:

> Hi,
>
> I have two instance of atlas (I1,I2) pointing to same hbase/solr/kafka as
> backend.
> When I am creating type/entity something from I1 they are not visible from
> I2.
> I need to restart the I2 to reflect and see the changes.
> Can someone throw some light on this behaviour ? and what is to be done to
> have both the instances (I1 & I2) to be in sync with hbase.
> I read the HA document and it says at present ATLAS can have only one
> active service and in future ATLAS wills support HA for webserive.
> Do we have any JIRA open for above requirement ?
>
> Thanks,
> Rishabh.
>