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https://issues.apache.org/jira/browse/IGNITE-7662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Valentin Kulichenko closed IGNITE-7662.
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> Slow event listener's work
> --------------------------
>
> Key: IGNITE-7662
> URL: https://issues.apache.org/jira/browse/IGNITE-7662
> Project: Ignite
> Issue Type: Wish
> Components: cache
> Affects Versions: 2.2
> Reporter: Ruslan Gilemzyanov
> Priority: Minor
>
> I wroted some code that can run Ignite server node and attached to it
> EventListener. Then I putted 10 elements on the cache, and for each element
> recorded a time difference between putting and catching.
> *When I created one server node and put 10 elements in IgniteCache I've got
> good results. For 10 elements it was:*
> EventListener - diff between put and listener - 51
> EventListener - diff between put and listener - 2
> EventListener - Time diff between put and listener - 1
> EventListener - Time diff between put and listener - 1
> EventListener - Time diff between put and listener - 1
> EventListener - Time diff between put and listener - 2
> EventListener - Time diff between put and listener - 2
> EventListener - Time diff between put and listener - 2
> EventListener - Time diff between put and listener - 2
> EventListener - Time diff between put and listener - 1
> *The results were the same when I added one node* (Topology snapshot became:
> [ver=2, servers=2, clients=0, CPUs=4, heap=3.6GB]).
> *But when i applied setBackups(1) to IgniteCache the results became weird:*
> EventListener - Time diff between put and listener - 573
> EventListener - Time diff between put and listener - 573
> EventListener - Time diff between put and listener - 570
> EventListener - Time diff between put and listener - 571
> EventListener - Time diff between put and listener - 571
> EventListener - Time diff between put and listener - 571
> EventListener - Time diff between put and listener - 571
> EventListener - Time diff between put and listener - 561
> EventListener - Time diff between put and listener - 560
> *My code for creating an IgniteCache and attaching to it event listener is
> very simple:*
> {code:java}
> Ignite ignite = Ignition.start("ignite.xml"))
> CacheConfiguration<String, Long> cfg = new CacheConfiguration<>();
> cfg.setCacheMode(CacheMode.PARTITIONED);
> cfg.setAtomicityMode(CacheAtomicityMode.ATOMIC);
> cfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_ASYNC);
> cfg.setName("myCache");
> cfg.setBackups(1);
> IgniteCache<String, Long> cache = ignite.getOrCreateCache(cfg);
> ContinuousQuery<String, Long> query = new ContinuousQuery<>();
> query.setLocalListener(new EventListener());
> query.setLocal(true);
> QueryCursor<Cache.Entry<String, Long>> cursor = cache.query(query);
> {code}
> In my listener I just print this message:
> EventListener - diff between put and listener
> You can look at it on [github|https://github.com/ruslangm/ignite-sample], it
> is really so simple.
> Is Ignite really so slow in listening events when there are exist backups?
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