[infinispan-issues] [JBoss JIRA] Updated: (ISPN-1244) Data loss possible during state transfer when numOwners == 1

[Manik Surtani (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-1244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manik Surtani updated ISPN-1244:
--------------------------------

              Status: Pull Request Sent  (was: Coding In Progress)
    Git Pull Request: https://github.com/infinispan/infinispan/pull/447


> Data loss possible during state transfer when numOwners == 1
> ------------------------------------------------------------
>
>                 Key: ISPN-1244
>                 URL: https://issues.jboss.org/browse/ISPN-1244
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Cache
>    Affects Versions: 5.0.0.CR7
>         Environment: single machine (Mac is my case)
>            Reporter: Alex Heneveld
>            Assignee: Manik Surtani
>
> I have a test (below) which creates a CacheManager and Cache, sets a value, waits a bit, creates another CacheManager and Cache, then tries to get the value from the first cache.  Only it gets null instead -- from both caches!
> Am new to Infinispan but discussed with Sanne who recommended to file as a bug.
> Originally discussed in community forum [here|http://community.jboss.org/message/615497].
> {code}
>     public void bug() throws InterruptedException {
>         EmbeddedCacheManager cm1 = newCM();
>         Cache c1 = cm1.getCache("x");
>         c1.put("key", "value");
>         Thread.sleep(3000);
>         EmbeddedCacheManager cm2 = newCM();
>         System.out.println(c1.get("key"));  //always says "value"
>         Cache c2 = cm2.getCache("x");
>         System.out.println(c1.get("key"));  //says null sometimes
>         assert c1.get("key") != null : "value at cache 1 was lost";        
>         cm1.stop();
>         cm2.stop();
>     }
>     public EmbeddedCacheManager newCM() {
>         GlobalConfiguration gc = GlobalConfiguration.getClusteredDefault();
>         Configuration cfg = new Configuration().fluent()
>             .mode(Configuration.CacheMode.DIST_SYNC)
>             .hash().numOwners(1)
>             .clustering().l1().disable()
>             .build();
>         return new DefaultCacheManager(gc, cfg);
>     }        
> {code}
> (BTW changing to REPL_SYNC, or numOwners(2), it works fine.)

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