Re: How to retrieve data from Collocated Cache with Simple Key

[Vladislav Pyatkov]

I am sorry for mistake Kamal...
On Jun 6, 2016 3:34 PM, "Kamal" <kamaltar...@gmail.com> wrote:

> Hi,
>
>     I've gone through the affinity collocation[1] example to understand how
> data gets collocated across caches. In my example, I found that I'm not
> able
> to retrieve data from collocated cache with simple key.
>
> I mean.
>
> Cache<AffinityKey&lt;String>, Person> personCache = ..;
> personCache.get(new AffinityKey<>(key, affKey)); // returns value
> personCache.get(new AffinityKey<>(key)); // throws NPE
>
> Exception in thread "main" java.lang.NullPointerException
>         at
>
> org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction.partition(RendezvousAffinityFunction.java:428)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheAffinityManager.partition(GridCacheAffinityManager.java:206)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheContext.toCacheKeyObject(GridCacheContext.java:1801)
>         at
>
> org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.get(GridDhtAtomicCache.java:339)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:4650)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:1391)
>         at
>
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.get(IgniteCacheProxy.java:907)
>         at
>
> my.apache.ignite.examples.collocation.CacheCollocationExample.main(CacheCollocationExample.java:69)
>
> In some scenarios, I have to fetch data from cache by simple key.
>
> [1]: https://apacheignite.readme.io/docs/affinity-collocation
> CacheCollocationExample.java
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/n5452/CacheCollocationExample.java
> >
> Company.java
> <http://apache-ignite-users.70518.x6.nabble.com/file/n5452/Company.java>
> Person.java
> <http://apache-ignite-users.70518.x6.nabble.com/file/n5452/Person.java>
>
>
>
>
> --
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>