[
https://issues.apache.org/jira/browse/IGNITE-5966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172949#comment-16172949
]
Pavel Konstantinov commented on IGNITE-5966:
--------------------------------------------
Tried to execute
{code}
public static void main(String[] args) throws Exception {
try (Ignite ignite = Ignition.start("sample-client.xml")) {
System.out.println(">>> Loading caches...");
System.out.println(">>> Loading cache: ActCache");
ignite.cache("ActCache").loadCache(null);
System.out.println(">>> All caches loaded!");
System.out.format("1->%s\n", ignite.cache("ActCache").get(10));
}
}
{code}
and got the following exception
{code}
Exception in thread "main" javax.cache.integration.CacheLoaderException:
javax.cache.CacheException: Failed to find mapping description [cache=ActCache,
typeId=class java.lang.Integer]. Please configure JdbcType to associate cache
'ActCache' with JdbcPojoStore.
at
org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.loadFromStore(GridCacheStoreManagerAdapter.java:327)
at
org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.load(GridCacheStoreManagerAdapter.java:282)
at
org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.loadAllFromStore(GridCacheStoreManagerAdapter.java:418)
at
org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.loadAll(GridCacheStoreManagerAdapter.java:384)
at
org.apache.ignite.internal.processors.cache.GridCacheAdapter$15.call(GridCacheAdapter.java:2024)
at
org.apache.ignite.internal.processors.cache.GridCacheAdapter$15.call(GridCacheAdapter.java:2022)
at
org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:6629)
at
org.apache.ignite.internal.processors.closure.GridClosureProcessor$2.body(GridClosureProcessor.java:967)
at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.cache.CacheException: Failed to find mapping description
[cache=ActCache, typeId=class java.lang.Integer]. Please configure JdbcType to
associate cache 'ActCache' with JdbcPojoStore.
at
org.apache.ignite.cache.store.jdbc.CacheAbstractJdbcStore.entryMapping(CacheAbstractJdbcStore.java:654)
at
org.apache.ignite.cache.store.jdbc.CacheAbstractJdbcStore.load(CacheAbstractJdbcStore.java:830)
at
org.apache.ignite.internal.processors.cache.CacheStoreBalancingWrapper.load(CacheStoreBalancingWrapper.java:98)
at
org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.loadFromStore(GridCacheStoreManagerAdapter.java:316)
... 11 more
{code}
> IgniteCache#get() fails with "Requesting mapping from grid failed" when
> deserialising binary object loaded from CacheJdbcPojoStoreFactory
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-5966
> URL: https://issues.apache.org/jira/browse/IGNITE-5966
> Project: Ignite
> Issue Type: Bug
> Environment: Ignite 2.1.4
> Reporter: Alexey Kukushkin
> Assignee: Alexey Kukushkin
> Fix For: 2.3
>
>
> STEPS TO REPRODUCE
> 1. A running MySQL database with at least one table with an Integer key and
> some data
> 2. Use WebConsole to automatically generate an Ignite project from the RDBMS.
> In the WebConsole add a cache for the table containing data
> 3. Build the project
> 4. Start the cluster (run ServerNodeSpringStartup)
> 5. Load the data (run LoadCaches)
> 6. Run simple "get data" code against the running cluster with the data
> loaded. Make sure you do NOT keep binary and do NOT put anything to the cache
> except loading data on step #5. For example, if the cache is "AircraftCache",
> the type is "Aircraft" and a row with ID 1 exists in the DB, then:
> IgniteCache<Integer, Aircraft> aircraftCache =
> ignite.getOrCreateCache("AircraftCache");
> System.out.format("1->%s\n", aircraftCache.get(1));
> EXPECTED:
> 1...5: Project is generated, cluster runs, data is loaded
> 6: The entry with ID 1 is output to the console
> ACTUAL:"
> 1..5: As expected
> 6: javax.cache.CacheException: class
> org.apache.ignite.IgniteCheckedException: Requesting mapping from grid failed
> for [platformId=0, typeId=-1267085398]
> ANALYSIS
> The “typeId -> MappedName” mappings are stored in the
> MarshallerContextImpl$allCaches[platformId] map.
> My understanding is according to the existing implementations it is expected
> the mapping will always be registered when BinaryContext#descriptorForClass()
> -> MarshallerContextImpl#registerClassName(typeId) is called either from
> BinaryWriterExImpl or BinaryReaderExImpl.
> However, that mechanism is never called when
> CacheJdbcPojoStore@buildBinaryObject builds the object, calling
> BinaryObjectBuilderImpl#build(). The latter method still requests
> BinaryContext#updateMetadata, which updates
> CacheObjectBinaryProcessorImpl#metadataFileStore on all server nodes. But the
> metadataFileStore is not the place where MarshallerContextImpl get mappings
> from.
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