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Posted to dev@ozone.apache.org by Hanisha Koneru <hk...@cloudera.com.INVALID> on 2020/12/01 20:30:49 UTC

Re: Enabling Ratis on OM by default

Thank you all the positive feedback.

I did do a comparison testing some time back and at that time, the performance of OM with ratis enabled was around 60% of that of non-ratis. There were multiple improvements made after that so the numbers could have changed.

I will run the tests again with the current code and post my findings.

Thanks
Hanisha

> On Nov 25, 2020, at 10:32 PM, Sammi Chen <sa...@apache.org> wrote:
> 
> +1
> 
> We are considering enabling OM HA in our production cluster in the near
> feature.
> 
> It will be very helpful if there is some performance data for reference.
> 
> 
> Regards,
> Sammi
> 
> On Tue, Nov 24, 2020 at 2:35 AM Hanisha Koneru <hk...@cloudera.com.invalid>
> wrote:
> 
>> Hi All,
>> 
>> I am proposing to enable Ratis by default on Ozone Manager - HDDS-4498 <
>> https://issues.apache.org/jira/browse/HDDS-4498>.
>> 
>> Ratis on OM has been tested extensively and is stable now.
>> 
>> HDDS-4330 is an on-going effort to support bootstrapping a new OM node.
>> The pre-requirement for bootstrapping a new OM node is that the cluster
>> must have ratis enabled OM. This also the pre-requirement for enabling OM
>> HA. Hence, by enabling ratis by default, we get rid of one extra step in
>> enabling HA.
>> 
>> It is simple to upgrade an existing non-ratis cluster to ratis enabled
>> cluster - set ozone.om.ratis.enabled to true and restart the OM.
>> 
>> Thanks
>> Hanisha


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Re: Enabling Ratis on OM by default

Posted by Hanisha Koneru <hk...@cloudera.com.INVALID>.
Hi All,

Here are the results from the OM write performance test on single node ratis enabled OM vs non-ratis OM.
		
		# Keys Per Sec	# Transactions per Sec
Single Node Ratis Enabled OM	4584	9168
Non Ratis OM	8078	16156

Thanks
Hanisha

> On Dec 1, 2020, at 12:30 PM, Hanisha Koneru <hk...@cloudera.com> wrote:
> 
> Thank you all the positive feedback.
> 
> I did do a comparison testing some time back and at that time, the performance of OM with ratis enabled was around 60% of that of non-ratis. There were multiple improvements made after that so the numbers could have changed.
> 
> I will run the tests again with the current code and post my findings.
> 
> Thanks
> Hanisha
> 
>> On Nov 25, 2020, at 10:32 PM, Sammi Chen <sa...@apache.org> wrote:
>> 
>> +1
>> 
>> We are considering enabling OM HA in our production cluster in the near
>> feature.
>> 
>> It will be very helpful if there is some performance data for reference.
>> 
>> 
>> Regards,
>> Sammi
>> 
>> On Tue, Nov 24, 2020 at 2:35 AM Hanisha Koneru <hk...@cloudera.com.invalid>
>> wrote:
>> 
>>> Hi All,
>>> 
>>> I am proposing to enable Ratis by default on Ozone Manager - HDDS-4498 <
>>> https://issues.apache.org/jira/browse/HDDS-4498>.
>>> 
>>> Ratis on OM has been tested extensively and is stable now.
>>> 
>>> HDDS-4330 is an on-going effort to support bootstrapping a new OM node.
>>> The pre-requirement for bootstrapping a new OM node is that the cluster
>>> must have ratis enabled OM. This also the pre-requirement for enabling OM
>>> HA. Hence, by enabling ratis by default, we get rid of one extra step in
>>> enabling HA.
>>> 
>>> It is simple to upgrade an existing non-ratis cluster to ratis enabled
>>> cluster - set ozone.om.ratis.enabled to true and restart the OM.
>>> 
>>> Thanks
>>> Hanisha
>