How many zookeepers do you have? How many collections? What is there size?
How much CPU / memory do you give per container? How much heap in comparison to
total memory of the container ?
> Am 03.09.2019 um 17:49 schrieb Andrew Kettmann <andrew.kettm...@evolve24.com>:
>
> Currently our 7.7.2 cluster has ~600 hosts and each collection is using an
> autoscaling policy based on system property. Our goal is a single core per
> host (container, running on K8S). However as we have rolled more
> containers/collections into the cluster any creation/move actions are taking
> a huge amount of time. In fact we generally hit the 180 second timeout if we
> don't schedule it as async. Though the action gets completed anyway. Looking
> at the code, it looks like for each core it is considering the entire cluster.
>
> Right now our autoscaling policies look like this, note we are feeding a
> sysprop on startup for each collection to map to specific containers:
>
> "FOO_CUSTOMER":[
> {
> "replica":"#ALL",
> "sysprop.HELM_CHART":"FOO_CUSTOMER",
> "strict":"true"},
> {
> "replica":"<2",
> "node":"#ANY",
> "strict":"false"}]
>
> Does name based filtering allow wildcards ? Also would that likely fix the
> issue of the time it takes for Solr to decide where cores can go? Or any
> other suggestions for making this more efficient on the Solr overseer? We do
> have dedicated overseer nodes, but the leader maxes out CPU for awhile while
> it is thinking about this.
>
> We are considering putting each collection into its own zookeeper
> znode/chroot if we can't support this many nodes per overseer. I would like
> to avoid that if possible, but also creating a collection in sub 10 minutes
> would be neat too.
>
> I appreciate any input/suggestions anyone has!
>
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> Andrew Kettmann
> DevOps Engineer
> P: 1.314.596.2836
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