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https://issues.apache.org/jira/browse/IGNITE-4327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15705102#comment-15705102
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Alexander Paschenko commented on IGNITE-4327:
---------------------------------------------
This problem arises primarily because current implementation of binary
marshaller does not unmarshal arrays of types like {{Byte}}, {{Long}}, etc.
(wrappers for primitive types), as well as any JDK types properly - it always
treats them as {{Object[]}}. So after {{SELECT}} has returned an {{Object[]}}
instead of {{Byte[]}}, we can't set that returned array as a value of
{{Byte[]}} field (metadata check properly fails).
At a glance, the problem could disappear if we just change type of array from
{{Byte[]}} to {{byte[]}}, but this does not help as long as Ignite's internals
always wrap arrays into H2's {{ValueArray}} without component type specified,
and, moreover, always deserializes it as an array of {{Object[]}} s.
So, in a nutshell, binary engine can't deserialize {{Byte[]}} fields
(separately) while SQL engine can't serialize a {{byte[]}} (or any other
primitive array) at all.
These problems will be stated in separate issues and linked to this one as
subtasks.
> Failed to INSERT array of Bytes from SELECT
> -------------------------------------------
>
> Key: IGNITE-4327
> URL: https://issues.apache.org/jira/browse/IGNITE-4327
> Project: Ignite
> Issue Type: Bug
> Components: binary, SQL
> Affects Versions: 1.8
> Reporter: Alexander Paschenko
> Fix For: 2.0
>
> Attachments: IGNITE-4327.zip
>
>
> An attempt to INSERT binary object having a {{Byte[]}} typed field from
> {{SELECT *}} yeilds following exception (initially observed in IGNITE-4323):
> {code}
> Exception in thread "main" javax.cache.CacheException: class
> org.apache.ignite.IgniteCheckedException: Can not set [Ljava.lang.Byte; field
> org.apache.ignite.testtools.model.AllTypes.bytesCol to [Ljava.lang.Object;
> at
> org.apache.ignite.internal.processors.cache.GridCacheUtils.convertToCacheException(GridCacheUtils.java:1440)
> at
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.cacheException(IgniteCacheProxy.java:2183)
> at
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.get(IgniteCacheProxy.java:1125)
> at
> org.apache.ignite.examples.datagrid.ExtSqlExample.main(ExtSqlExample.java:237)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
> Caused by: class org.apache.ignite.IgniteCheckedException: Can not set
> [Ljava.lang.Byte; field org.apache.ignite.testtools.model.AllTypes.bytesCol
> to [Ljava.lang.Object;
> at
> org.apache.ignite.internal.util.IgniteUtils.cast(IgniteUtils.java:7185)
> at
> org.apache.ignite.internal.util.future.GridFutureAdapter.get0(GridFutureAdapter.java:169)
> at
> org.apache.ignite.internal.util.future.GridFutureAdapter.get(GridFutureAdapter.java:118)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.get(GridDhtAtomicCache.java:482)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:4783)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:1395)
> at
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.get(IgniteCacheProxy.java:1118)
> ... 6 more
> Caused by: java.lang.IllegalArgumentException: Can not set [Ljava.lang.Byte;
> field org.apache.ignite.testtools.model.AllTypes.bytesCol to
> [Ljava.lang.Object;
> at
> sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164)
> at
> sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168)
> at
> sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
> at java.lang.reflect.Field.set(Field.java:741)
> at
> org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.read(BinaryFieldAccessor.java:643)
> at
> org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:829)
> at
> org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1498)
> at
> org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1450)
> at
> org.apache.ignite.internal.binary.BinaryObjectImpl.deserializeValue(BinaryObjectImpl.java:637)
> at
> org.apache.ignite.internal.binary.BinaryObjectImpl.value(BinaryObjectImpl.java:142)
> at
> org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinary(CacheObjectContext.java:272)
> at
> org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:160)
> at
> org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:147)
> at
> org.apache.ignite.internal.processors.cache.GridCacheContext.unwrapBinaryIfNeeded(GridCacheContext.java:1760)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.GridPartitionedSingleGetFuture.setResult(GridPartitionedSingleGetFuture.java:630)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.GridPartitionedSingleGetFuture.onResult(GridPartitionedSingleGetFuture.java:492)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtCacheAdapter.processNearSingleGetResponse(GridDhtCacheAdapter.java:155)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.access$2200(GridDhtAtomicCache.java:125)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$12.apply(GridDhtAtomicCache.java:440)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$12.apply(GridDhtAtomicCache.java:435)
> at
> org.apache.ignite.internal.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:827)
> at
> org.apache.ignite.internal.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:369)
> at
> org.apache.ignite.internal.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:293)
> at
> org.apache.ignite.internal.processors.cache.GridCacheIoManager.access$000(GridCacheIoManager.java:95)
> at
> org.apache.ignite.internal.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:238)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1082)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:710)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.access$1700(GridIoManager.java:102)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager$5.run(GridIoManager.java:673)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Process finished with exit code 1
> {code}
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