David,

Are you saying default should be "round_robin"? In case of round_robin and 
more than one endpoint being available it does behave as you expect.

On Wednesday, November 27, 2019 at 10:20:53 AM UTC-8, David M wrote:
>
> Thanks for the answer! I do not think this is a good design. The main goal 
> for hedging is to execute remote call on a different servers. Running 
> heading calls on the same server is worse that not having hedging at all.
> Is there a plan to redesign it ?
>  
>
> On Wednesday, November 20, 2019 at 4:36:33 PM UTC-8, Penn (Dapeng) Zhang 
> wrote:
>>
>> The retry/hedging attempts will always pick an currently available 
>> endpoint provided by the load balancer. If you are using pick_first load 
>> balancing (which is default), it will always provide the first endpoint if 
>> it's available. If you are using round_robin load balancing, then each 
>> retry/hedging attempts will pick next available endpoint from load 
>> balancer, but if 2 out of 3 endpoints are unreachable, it will always use 
>> the only available one. This is by design.
>>
>>
>> On Thursday, November 14, 2019 at 3:20:24 PM UTC-8, David M wrote:
>>>
>>> I am using Java gRPC version 1.24.1. When debugging some timed out 
>>> requests I found out that sometimes client calls all hedging requests ( 3 
>>> in my case) on the same server endpoint.
>>> NameResolver.Listener.onAddresses() got updated with 3 distinct 
>>> endpoints before first call was made.
>>> Is it a bug in gRPC code ? Even if 2 out of 3 servers were unreachable, 
>>> having all hedging attempts go to a single endpoint is not the best option. 
>>>
>>>
>>> status-code=DEADLINE_EXCEEDED status-description=deadline exceeded after 
>>> 9999958644ns. [closed=[], open=[[remote_addr=xxx.com/xxx.xxx.xxx.xxx:
>>> 3112], [remote_addr=xxx.com/xxx.xxx.xxx.xxx:3112], [remote_addr=xxx.com
>>> /xxx.xxx.xxx.xxx:3112]]]
>>>
>>> Thanks,
>>>     David
>>>
>>>
>>>

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