It certainly is supported and is expected to work. Note that it can take upto 2 
x leader election timeout (not sure what it's set to, can be seconds to tens of 
seconds) for CDS to stabilized after such an excercise.
     >> What is the default leader election timeout? Where do we check that?
           Currently we are waiting till DATASTORE sync_status becomes true. 
But will that fluctuate?

Thanks,
Faseela

-----Original Message-----
From: Robert Varga <n...@hq.sk> 
Sent: Wednesday, March 13, 2019 2:49 PM
To: Faseela K <faseel...@ericsson.com>; Jaya Priyadarshini 
<jaya.priyadarsh...@ericsson.com>; Dayavanti Gopal Kamath 
<dayavanti.gopal.kam...@ericsson.com>
Cc: netvirt-...@lists.opendaylight.org; controller-dev@lists.opendaylight.org
Subject: Re: Netvirt 3 node CSIT HA Tests - failure debugging

On 13/03/2019 08:38, Faseela K wrote:
> +Robert
> 
> Robert,

Hello,

> 
>     Jaya is trying the below steps in a 3 node ODL Cluster :
> 
>  1. Take Down ODL1 and ODL2
>      1. Check all VM connectivities are intact even if 2 nodes are 
> down  2. Bring Up ODL1 and ODL2, sequentially as below
> 
> a.  ClusterManagement.Start Single Member    /1    msg=up: ODL3, down:
> ODL1, ODL2    wait_for_sync=False/
> 
> b.  ClusterManagement.Start Single Member    /2    msg=up: ODL1, ODL3,
> down: ODL2/
> 
>  3. Take Down ODL2 and ODL3, sequentially
> 
> Once step 3 is performed, many of the subsequent tests fail, before we 
> dig into the details of the specific test cases that fail, wanted to 
> know whether the above procedure of

I am not sure what you mean. With two out of three nodes out the cluster cannot 
make any progress...

> Bringing UP and Bringing Down ODL nodes are supported, and expected to 
> work, or do we have to add any additional delay?

It certainly is supported and is expected to work. Note that it can take upto 2 
x leader election timeout (not sure what it's set to, can be seconds to tens of 
seconds) for CDS to stabilized after such an excercise.

Regards,
Robert

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