I only want the code be run once per shard. One way to guarantee that is to do
it in the leader, as there is always one leader per shard. I don't want to run
it in all the replicas. The code to run is "external" it doesn't touch any
document.
Le samedi 8 mai 2021 à 17:21:50 UTC−5, Shawn Heisey <[email protected]> a
écrit :
On 5/8/2021 12:21 PM, Walter Underwood wrote:
> Why do you only want to run it on the leader? This seems like a
> misunderstanding
> of how NRT replication works.
As I understand NRT, any update processor that is configured *before*
DistributedUpdateProcessor in the chain will be run once by the node
that first handles the update (probably the leader), and any processor
that is configured *after* DistributedUpdateProcessor will be run by
every indexing replica.
Can anyone confirm or deny my understanding?
Thanks,
Shawn
