ClassCastException while fetching data from IgniteCache (with custom persistent store)

[amit <ak...@gmail.com>]

hi, i am getting ClassCastException while fetching data from IgniteCache.

below is the code fragment:
CacheConfiguration<SubscriberKey, Subscriber> cacheCfg 
            	= new CacheConfiguration<SubscriberKey,
Subscriber>(CACHE_NAME);
...

IgniteCache<SubscriberKey, Subscriber> cache =
ignite.getOrCreateCache(cacheCfg)
...
logger.debug("data: {}",cache.get(id));    // works fine, prints complete
row
Subscriber val = cache.get(id);      //throws ClassCastException

exception msg:
java.lang.ClassCastException: example.datagrid.model.Subscriber cannot be
cast to example.datagrid.model.Subscriber



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Re: ClassCastException while fetching data from IgniteCache (with custom persistent store)

[Oleks K <ol...@gmail.com>]

I faced the same issue.
It appeared that Spring Boot is adding it's own classloader in "dev" mode.
Everything worked fine after I removed spring boot devtools jar from the
classpath.



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Re: ClassCastException while fetching data from IgniteCache (with custom persistent store)

[amit <ak...@gmail.com>]

Val,
Thanks for the quick reply.
Peer class loading is not configured. and cache is running under spring-boot
app.

you are right is a class-loader issue.





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Re: ClassCastException while fetching data from IgniteCache (with custom persistent store)

[vkulichenko <va...@gmail.com>]

This looks like a class loading issue. Do you have peer class loading
enabled? Are you running within an application server or other environment
with multiple class loaders? I recommend to set a breakpoint inside the
get() method and check why there are classes loaded by different class
loaders.

-Val



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