Hi Gordon, Following is the stack trace that I'm getting: *Exception in thread "main" java.util.concurrent.ExecutionException: java.lang.RuntimeException: Failed request 0.* * Caused by: java.lang.RuntimeException: Failed request 0.* * Caused by: java.lang.RuntimeException: Error while processing request with ID 0. Caused by: com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID: -985346241* *Serialization trace:* *$outer (scala.collection.convert.Wrappers$SeqWrapper)* * at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:119)* * at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:641)* * at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:99)* * at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528)* * at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761)* * at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:249)* * at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:136)* * at org.apache.flink.api.java.typeutils.runtime.TupleSerializer.deserialize(TupleSerializer.java:30)* * at org.apache.flink.queryablestate.client.state.serialization.KvStateSerializer.deserializeKeyAndNamespace(KvStateSerializer.java:94)* * at org.apache.flink.runtime.state.heap.AbstractHeapState.getSerializedValue(AbstractHeapState.java:93)* * at org.apache.flink.queryablestate.server.KvStateServerHandler.handleRequest(KvStateServerHandler.java:87)* * at org.apache.flink.queryablestate.server.KvStateServerHandler.handleRequest(KvStateServerHandler.java:49)* * at org.apache.flink.queryablestate.network.AbstractServerHandler$AsyncRequestTask.run(AbstractServerHandler.java:229)* * at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)* * at java.util.concurrent.FutureTask.run(FutureTask.java:266)* * at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)* * at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)* * at java.lang.Thread.run(Thread.java:748)*
I am not using any custom serialize as mentioned by Jiayi. Jayant Ameta On Thu, Oct 25, 2018 at 3:01 PM bupt_ljy <bupt_...@163.com> wrote: > Hi Jayant, > > There should be a Serializer parameter in the constructor of the > StateDescriptor, you should create a new serializer like this: > > > new GenericTypeInfo(classOf[UUID]).createSerializer(env.getConfig) > > > By the way, can you show us your kryo exception like what Gordon said? > > > Jiayi Liao, Best > > > > Original Message > *Sender:* Tzu-Li (Gordon) Tai<tzuli...@apache.org> > *Recipient:* Jayant Ameta<wittyam...@gmail.com>; bupt_ljy<bupt_...@163.com > > > *Cc:* user<user@flink.apache.org> > *Date:* Thursday, Oct 25, 2018 17:18 > *Subject:* Re: Queryable state when key is UUID - getting Kyro Exception > > Hi Jayant, > > What is the Kryo exception message that you are getting? > > Cheers, > Gordon > > > On 25 October 2018 at 5:17:13 PM, Jayant Ameta (wittyam...@gmail.com) > wrote: > > Hi, > I've not configured any serializer in the descriptor. (Neither in flink > job, nor in state query client). > Which serializer should I use? > > Jayant Ameta > > > On Thu, Oct 25, 2018 at 2:13 PM bupt_ljy <bupt_...@163.com> wrote: > >> Hi, >> >> It seems that your codes are right. Are you sure that you’re using the >> same Serializer as the Flink program do? Could you show the serializer in >> descriptor? >> >> >> >> Jiayi Liao, Best >> >> Original Message >> *Sender:* Jayant Ameta<wittyam...@gmail.com> >> *Recipient:* user<user@flink.apache.org> >> *Date:* Thursday, Oct 25, 2018 14:17 >> *Subject:* Queryable state when key is UUID - getting Kyro Exception >> >> I get Kyro exception when querying the state. >> >> Key: UUID >> MapState<UUID, String> >> >> Client code snippet: >> >> CompletableFuture<MapState<UUID, String>> resultFuture = >> >> client.getKvState(JobID.fromHexString("c7b8af14b8afacf4fac16cdd0da7e997"), >> "rule", >> UUID.fromString("3b3f17a0-d81a-11e8-bb91-7fd1412de84d"), >> TypeInformation.of(new TypeHint<UUID>() {}), descriptor); >> MapState<UUID, String> mapState = resultFuture.get(10, TimeUnit.SECONDS); >> >> >> Any better way to query it? >> >> >> Jayant Ameta >> >