TreeMap deserialization error

[ghost]

From michael....@gmail.com on April 29, 2013 10:15:36

What steps will reproduce the problem?
test code:
bean for serialization
public class TreeMapSerializerTestData implements Serializable {
private static final long serialVersionUID = 8449423540690186724L;

public String x1 = "abc";
private Map<String, String> treeMap;
public String x2 = "abc";
public String x3 = "def";

public TreeMapSerializerTestData() {
treeMap = new TreeMap<String, String>(new FakeComparator());
}

public TreeMapSerializerTestData(Map<String, String> init) {
treeMap = new TreeMap<String, String>(new FakeComparator());
treeMap.putAll(init);
}

public static class FakeComparator implements Comparator<String>, Serializable {
private static final long serialVersionUID = 3667761299603933963L;

@OverRide
public int compare(String o1, String o2) {
return o2.compareTo(o1);
}
}
}

client code:
public void testTreeMap2() {
TreeMapSerializerTestData tm =
new TreeMapSerializerTestData(ImmutableMap.of("zxczxc", "qweasd", "fghfghd", "567652", "vbnvbn", "2013-04-29"));

Kryo kryo = new Kryo();
Output output = new Output(16384, 1024*1024);
kryo.writeClassAndObject(output, tm);
output.close();

byte[] bytes = output.toBytes();
TreeMapSerializerTestData utm = (TreeMapSerializerTestData) kryo.readClassAndObject(new Input(bytes));

assertEquals(utm, tm);
}

What is the expected output? What do you see instead?
I expect test passed, but get exception instead:

com.esotericsoftware.kryo.KryoException: java.lang.IndexOutOfBoundsException: Index: 120, Size: 2
Serialization trace:
treeMap (com.zina.serializer.beans.test.TreeMapSerializerTestData)
at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:626)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221)
at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:729)
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 120, Size: 2
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at com.esotericsoftware.kryo.util.MapReferenceResolver.getReadObject(MapReferenceResolver.java:42)
at com.esotericsoftware.kryo.Kryo.readReferenceOrNull(Kryo.java:773)
at com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:697)
at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:122)
at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:17)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:648)
at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:605)
... 26 more


What version of the Kryo are you using?
2.21 has this issue, 2.20 - no

Please provide any additional information below.
Any class that contains TreeMap fails to deserialize - sometimes get java.lang.IndexOutOfBoundsException, sometimes class cast exception

Original issue: http://code.google.com/p/kryo/issues/detail?id=112

[ghost]

From mat...@peel.com on May 09, 2013 13:00:45

I'm experiencing the same problem with using Kryo 2.21 -- and my class contains TreeMap:

May 09 19:47:42 ERROR - Something went wrong: java.lang.IndexOutOfBoundsException: Index: 118, Size: 0
java.lang.IndexOutOfBoundsException: Index: 118, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:571)
at java.util.ArrayList.get(ArrayList.java:349)
at com.esotericsoftware.kryo.util.MapReferenceResolver.getReadObject(MapReferenceResolver.java:42)
at com.esotericsoftware.kryo.Kryo.readReferenceOrNull(Kryo.java:773)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:624)
at java.lang.Thread.run(Thread.java:679)

[ghost]

From romixlev on July 23, 2013 06:21:04

Hi Michael,

Yes. This is a bug and it is now fixed in trunk, i.e. in the v2.22-SNAPSHOT
Thanks for reporting it!

-Leo

Status: Verified

[ink-ua]

Hi,

I have a similar IndexOutOfBoundsException error with Kryo 2.21 and ConcurrentHashMap, but in my case it's a new field added to the new version of class. Could someone please point out which commit fixed this issue? So I can check if this fixes my issue. Unfortunately we can't just upgrade to kryo 2.22 or more because of binary incompatibility of serialized data.

Thanks in advance

[romix]

If I'm not mistaken, this is this commit:
00ffc7e