Julien Nioche created STORM-3582: ------------------------------------ Summary: Kryo errors when using custom serialization Key: STORM-3582 URL: https://issues.apache.org/jira/browse/STORM-3582 Project: Apache Storm Issue Type: Bug Components: storm-core Affects Versions: 2.1.0 Reporter: Julien Nioche
(this has been reported on the user list in January and previously by a different user) ------------------------------------------------------------------------------------ My code works fine with Storm 1.x but the workers crash constantly with Storm 2.x Some exceptions look like {{_com.esotericsoftware.kryo.KryoException: Buffer underflow._}} {{_at com.esotericsoftware.kryo.io.Input.require(Input.java:199) ~[kryo-3.0.3.jar:?]_}} {{_at com.esotericsoftware.kryo.io.Input.readUtf8_slow(Input.java:575) ~[kryo-3.0.3.jar:?]_}} {{_at com.esotericsoftware.kryo.io.Input.readUtf8(Input.java:553) ~[kryo-3.0.3.jar:?]_}} {{_at com.esotericsoftware.kryo.io.Input.readString(Input.java:483) ~[kryo-3.0.3.jar:?]_}} {{whereas others are}} {{_2020-01-21 11:13:39.368 o.a.s.m.n.StormServerHandler Netty-server-localhost-6701-worker-1 [ERROR] server errors in handling the request_}} {{_com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID: *95* at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:137) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:670) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:781) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:153) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:39) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:793) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40) ~[kryo-3.0.3.jar:?] at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:689) ~[kryo-3.0.3.jar:?] at org.apache.storm.serialization.KryoValuesDeserializer.deserializeFrom(KryoValuesDeserializer.java:31) ~[storm-client-2.1.0.jar:2.1.0]_}} {{the class ID values are random integers. }} {{}} The tuples in my topologies contain mostly standard classes like String; the only exception is the following class [https://github.com/DigitalPebble/storm-crawler/blob/2.x/core/src/main/java/com/digitalpebble/stormcrawler/Metadata.java#L41] for which we specify a custom serialization for Kryo. My configurations contain | topology.kryo.register:|- com.digitalpebble.stormcrawler.Metadata| to register the custom class. The user who had reported the problem first also used custom serialization. -- This message was sent by Atlassian Jira (v8.3.4#803005)