Using 3rd party DB together with native persistence (WAS: Getting Invalid state exception when Persistance is enabled.)

[Stanislav Lukyanov]

Hi Prasad,

// Please send different questions separately – this way it’s easier to answer 
and to search for existing answers

> Also, I am loading the cache from oracle table using loadCache method. If the 
> persistence is enabled and if the data is already persisted, I want to make 
> sure that the cache is loaded from persisted data instead of loading it from 
> oracle table using loadCache. Can someone please advise how this can be 
> achieved?


Ignite doesn’t support using 3rd party DBs and native persistence with the same 
cache.
If you need to use both, I’d suggest to create two caches, one backed by Oracle 
and one with enabled Ignite persistence, and alternate between them in your 
application code.

Thanks,
Stan

From: Prasad Bhalerao
Sent: 20 февраля 2018 г. 15:24
To: user@ignite.apache.org
Subject: Getting Invalid state exception when Persistance is enabled.

Hi,

I am starting ignite node in server mode in intellij. I am starting only one 
instance of it. I am using IgniteSpringBean to set configuration and start the 
node as shown below. But when I enable persistence, I get following exception.

Caused by: java.lang.IllegalStateException: Ignite is in invalid state to 
perform this operation. It either not started yet or has already being or have 
stopped [ignite=null, cfg=null]

As per the doc, IgniteSpringBean is responsible for starting the ignite. So how 
to set node to active state in case this case?

Also, I am loading the cache from oracle table using loadCache method. If the 
persistence is enabled and if the data is already persisted, I want to make 
sure that the cache is loaded from persisted data instead of loading it from 
oracle table using loadCache. Can someone please advise how this can be 
achieved?

Code to config ignite and cache:

@Bean
public IgniteSpringBean igniteInstance() {
    IgniteSpringBean ignite = new IgniteSpringBean();
    ignite.active(true);
    ignite.setConfiguration(getIgniteConfiguration());

    return ignite;
}

private IgniteConfiguration getIgniteConfiguration() {

    String HOST = "127.0.0.1:47500..47509";
    TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();
    ipFinder.setAddresses(Collections.singletonList(HOST));

    TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
    discoSpi.setIpFinder(ipFinder);

    IgniteConfiguration cfg = new IgniteConfiguration();
    cfg.setDiscoverySpi(discoSpi);
    cfg.setIgniteInstanceName("springDataNode");
    cfg.setPeerClassLoadingEnabled(false);
    cfg.setRebalanceThreadPoolSize(4);

    DataStorageConfiguration storageCfg = new DataStorageConfiguration();
    storageCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true);
    cfg.setDataStorageConfiguration(storageCfg);

    CacheConfiguration<IPRangeDataKey, IPV4RangeData> ipv4RangeCacheCfg = new 
CacheConfiguration<>("IPV4RangeCache");
    ipv4RangeCacheCfg.setAtomicityMode(CacheAtomicityMode.TRANSACTIONAL);
    ipv4RangeCacheCfg.setWriteThrough(false);
    ipv4RangeCacheCfg.setReadThrough(false);
    ipv4RangeCacheCfg.setRebalanceMode(CacheRebalanceMode.ASYNC);
    
ipv4RangeCacheCfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
    ipv4RangeCacheCfg.setBackups(1);
    Factory<IPV4RangeCacheDataLoader> storeFactory = 
FactoryBuilder.factoryOf(IPV4RangeCacheDataLoader.class);
    ipv4RangeCacheCfg.setCacheStoreFactory(storeFactory);

    cfg.setCacheConfiguration(ipv4RangeCacheCfg);
    return cfg;
}

Thanks,
Prasad