Rahul Mohan created IGNITE-20688:
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Summary: Java Thin Client - Error while deserializing Collection
Key: IGNITE-20688
URL: https://issues.apache.org/jira/browse/IGNITE-20688
Project: Ignite
Issue Type: Bug
Components: binary, thin client
Affects Versions: 2.15, 2.14, 2.13, 2.12, 2.10, 2.9
Reporter: Rahul Mohan
I have encountered an issue in deserializing cache values which are of
Collection type.
The issue occurs if a field in different objects within the collection points
to the same reference.
*Versions:*
org.apache.ignite:ignite-core:2.9.0 to org.apache.ignite:ignite-core:2.15.0
{code:java}
Person.java
public class Person implements Serializable {
private String id;
private String firstName;
private String lastName;
private double salary;
private String country;
private String deleted;
private Set<String> accounts;
}
Client
ClientCacheConfiguration cacheCfg = new
ClientCacheConfiguration().setName(cacheName).
setCacheMode(CacheMode.REPLICATED).
setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
cache = client.getOrCreateCache(cacheCfg);
Set<String> set = new HashSet<>();
set.add("1");
List<Person> persons = new ArrayList<>();
persons.add(new Person("105286a4","Jack","Smith",10000f,
"USA","false", set));
persons.add(new Person("98545b0fd3af","John", "Doe", 500000f,
"Australia","false", null));
persons.add(new Person("98545b0fd3afd","Hari","M",400000f, "India",
null, null));
persons.add(new
Person("985488b0fd3ae","Bugs","Bunny",300000f,"Wabbit Land ", null, set));
cache.put("group1", value) // Write collection to cache
List<Person> persons = (List<Person>) cache.get("group1"); // Get
from cache, Exception here {code}
*Exception:*
{code:java}
class org.apache.ignite.binary.BinaryObjectException: Failed to deserialize
object [typeName=com.ignite.example.model.Person]
at
org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:927)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1764)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1716)
at
org.apache.ignite.internal.binary.GridBinaryMarshaller.deserialize(GridBinaryMarshaller.java:316)
at
org.apache.ignite.internal.client.thin.ClientBinaryMarshaller.deserialize(ClientBinaryMarshaller.java:74)
at
org.apache.ignite.internal.client.thin.ClientUtils.unwrapBinary(ClientUtils.java:557)
at
org.apache.ignite.internal.client.thin.ClientUtils.unwrapCollection(ClientUtils.java:578)
at
org.apache.ignite.internal.client.thin.ClientUtils.unwrapBinary(ClientUtils.java:562)
at
org.apache.ignite.internal.client.thin.ClientUtils.readObject(ClientUtils.java:546)
at
org.apache.ignite.internal.client.thin.TcpClientCache.readObject(TcpClientCache.java:556)
at
org.apache.ignite.internal.client.thin.TcpClientCache.readObject(TcpClientCache.java:561)
at
org.apache.ignite.internal.client.thin.TcpClientCache$$Lambda$395/1950117092.apply(Unknown
Source)
at
org.apache.ignite.internal.client.thin.TcpClientChannel.receive(TcpClientChannel.java:284)
at
org.apache.ignite.internal.client.thin.TcpClientChannel.service(TcpClientChannel.java:219)
at
org.apache.ignite.internal.client.thin.ReliableChannel.service(ReliableChannel.java:198)
at
org.apache.ignite.internal.client.thin.ReliableChannel.affinityService(ReliableChannel.java:261)
at
org.apache.ignite.internal.client.thin.TcpClientCache.cacheSingleKeyOperation(TcpClientCache.java:508)
at
org.apache.ignite.internal.client.thin.TcpClientCache.get(TcpClientCache.java:111)
at
com.ignite.example.service.ApacheIgniteService.printAllKeys(ApacheIgniteService.java:117)
at
com.ignite.example.service.ApacheIgniteService.init(ApacheIgniteService.java:103)
at
com.ignite.example.IgniteCacheExampleApplication.run(IgniteCacheExampleApplication.java:22)
at
org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:768)
at
org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
at
com.ignite.example.IgniteCacheExampleApplication.main(IgniteCacheExampleApplication.java:17)
Caused by: class org.apache.ignite.binary.BinaryObjectException: Failed to read
field [name=accounts]
at
org.apache.ignite.internal.binary.BinaryFieldAccessor.read(BinaryFieldAccessor.java:192)
at
org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:888)
... 24 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -430
at
org.apache.ignite.internal.binary.streams.BinaryHeapInputStream.readByteAndShift(BinaryHeapInputStream.java:120)
at
org.apache.ignite.internal.binary.streams.BinaryAbstractInputStream.readByte(BinaryAbstractInputStream.java:37)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.<init>(BinaryReaderExImpl.java:219)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.<init>(BinaryReaderExImpl.java:186)
at
org.apache.ignite.internal.binary.BinaryUtils.doReadObject(BinaryUtils.java:1801)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1748)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1716)
at
org.apache.ignite.internal.binary.BinaryReaderExImpl.readField(BinaryReaderExImpl.java:1978)
at
org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.read0(BinaryFieldAccessor.java:703)
at
org.apache.ignite.internal.binary.BinaryFieldAccessor.read(BinaryFieldAccessor.java:188)
{code}
*Analysis*
The exception occurs due to a OutOfBounds read happening in
obj = BinaryUtils.doReadObject(in, ctx, ldr, this);
This is because *handlePos* points to a location in the ByteBuffer which is
outside that of the Buffer in the current object resulting in a negative offset
(java.lang.ArrayIndexOutOfBoundsException: {*}-430{*})
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The serialization works and the Byte array response returned from the server
is the same as that was written. It's the way HANDLE types within a Collection
are read that's probably causing this.
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