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Posted to dev@ignite.apache.org by "HAOFENG DENG (Jira)" <ji...@apache.org> on 2020/02/05 08:14:00 UTC
[jira] [Created] (IGNITE-12623) ClassCastException on Thin client
when get cache value with List and Map
HAOFENG DENG created IGNITE-12623:
-------------------------------------
Summary: ClassCastException on Thin client when get cache value with List and Map
Key: IGNITE-12623
URL: https://issues.apache.org/jira/browse/IGNITE-12623
Project: Ignite
Issue Type: Bug
Components: cache, clients
Affects Versions: 2.7.6
Environment: Ubuntu
Java 11
Ignite 2.7.6
Reporter: HAOFENG DENG
I use the thin java client
I Create a ArrayList and put the Person object into it.
{code:java}
try (IgniteClient igniteClient = Ignition.startClient(new ClientConfiguration().setAddresses("127.0.0.1:10800"))) {
final ClientCache<String, List<Person>> demo = igniteClient.getOrCreateCache("demo");
final List<Person> personList = new java.util.ArrayList<>();
personList.add(new Person("apache", 100));
personList.add(new Person("Ignite", 13));
demo.put("test", personList);
}
{code}
And when I take it out of the list
{code:java}
try (IgniteClient igniteClient = Ignition.startClient(new ClientConfiguration().setAddresses("127.0.0.1:10800"))) {
final ClientCache<String, List<Person>> demo = igniteClient.getOrCreateCache("demo");
final List<Person> personList = demo.get("test");
final Person person = personList.get(0);
}{code}
I get the following exceptions:
{code:java}
java.lang.ClassCastException: class org.apache.ignite.internal.binary.BinaryObjectImpl cannot be cast to class com.peeandgee.Person (org.apache.ignite.internal.binary.BinaryObjectImpl and com.peeandgee.Person are in unnamed module of loader 'app')
{code}
However, there is no exception if I modify the code as follows:
{code:java}
BinaryObject bo = (BinaryObject) map.get(0);
Person person = bo.deserialize();
{code}
Same issue in Map [ClassCastException on thinClient in Apache Ignite|[https://stackoverflow.com/questions/59299316/classcastexception-on-thinclient-in-apache-ignite]]
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