Hi Danny, Could you please share your node filter/cluster group pedicate?
Kind regards, Alex. On Mon, May 15, 2017 at 10:49 PM, dany74q [via Apache Ignite Users] < ml+s70518n12861...@n6.nabble.com> wrote: > Hey Alex. > Thanks for the prompt response ! > We actually do employ a node filter - lets say we have N nodes, we deploy > our services to a group B, being roughly N/10 of size (20~ nodes). > > Our services are quite extensive, and so deploying them unevenly across B > causes GCs, stalls and other unfortunate results. > > We have implemented a round robin approach, where we create a cluster > group consisting of one of the nodes in B (node at position counter % > B_size). > But it has many shortcomings - > their deployment predicate is always fixed on that specific node, and it > doesn't scale when adding additional nodes with the same node attribute. > > We're looking for a different solution. > Question - is it possible to have an affinity key deployment strategy, but > not having the services "rebalance" when a node leaves / joins ? > Any other solutions ? > On Mon, May 15, 2017 at 10:12 PM afedotov [via Apache Ignite Users] <[hidden > email] <http:///user/SendEmail.jtp?type=node&node=12861&i=0>> wrote: > >> Danny, in this case, it looks like you are right and the random don't >> provide even distribution. >> To avoid this you could devise a solution based on a node filter if >> affinity deployment doesn't do the trick for you >> https://apacheignite.readme.io/v1.8/docs/service-grid# >> section-node-filter-based-deployment >> >> Kind regards, >> Alex. >> >> On Mon, May 15, 2017 at 8:34 PM, dany74q <[hidden email] >> <http:///user/SendEmail.jtp?type=node&node=12860&i=0>> wrote: >> Hey Alex, >> >> The services are deployed dynamically after all nodes are started. >> It could be the case that the random distribution isn't "random enough" - >> and most of the services are concentrated on specific nodes. >> >> Could we somehow control the way those services are deployed within their >> cluster group, but without an affinity key ? >> >> Would love that ability ! >> >> On Mon, May 15, 2017 at 4:08 PM afedotov [via Apache Ignite Users] <[hidden > email] <http:///user/SendEmail.jtp?type=node&node=12858&i=0>> wrote: > Hi Danny. > > At the moment, cluster singleton services are deployed on a random basis. > How many Ignite nodes do you run? > How did you deploy services: after all the nodes had been started or you > have the services specified in configuration? > > Kind regards, > Alex. > > On Sat, May 13, 2017 at 1:06 AM, dany74q [via Apache Ignite Users] <[hidden > email] <http:///user/SendEmail.jtp?type=node&node=12845&i=0>> wrote: > Hi everyone, > > We use ignite's (1.7.4) service grid to deploy hundreds of (different) > services in our cluster. > There's a behavior we've noticed, once deploying that many services, that > they tend do deploy unevenly in the cluster, > that means that we can get to a point where a great number of services are > deployed on a single node, instead of spreading them out more evenly. > > Is there any way to guarantee a random or even distribution, or a > round-robin deployment policy on our nodes, without using affinity keys > (Partitions may shift, and so services can get cancelled and redeployed > with no reason) ? > > Thanks ! > - Danny > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://apache-ignite-users.70518.x6.nabble.com/How-to- > deploy-ignite-service-evenly-across-the-cluster-tp12674.html > To start a new topic under Apache Ignite Users, email [hidden email] > <http:///user/SendEmail.jtp?type=node&node=12845&i=1> > To unsubscribe from Apache Ignite Users, click here. > NAML > <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://apache-ignite-users.70518.x6.nabble.com/How-to- > deploy-ignite-service-evenly-across-the-cluster-tp12674p12845.html > To unsubscribe from How to deploy ignite service evenly across the cluster > ?, click here. > NAML > <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > > ------------------------------ > View this message in context: Re: How to deploy ignite service evenly > across the cluster ? 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