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https://issues.apache.org/jira/browse/STORM-1504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15123101#comment-15123101
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ASF GitHub Bot commented on STORM-1504:
---------------------------------------
Github user abhishekagarwal87 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1052#discussion_r51231303
--- Diff:
external/storm-hdfs/src/main/java/org/apache/storm/hdfs/avro/AvroGenericSerializer.java
---
@@ -0,0 +1,79 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.storm.hdfs.avro;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import org.apache.avro.Schema;
+import org.apache.avro.generic.GenericContainer;
+import org.apache.avro.generic.GenericDatumReader;
+import org.apache.avro.generic.GenericDatumWriter;
+import org.apache.avro.io.BinaryEncoder;
+import org.apache.avro.io.Decoder;
+import org.apache.avro.io.DecoderFactory;
+import org.apache.avro.io.EncoderFactory;
+
+import java.io.IOException;
+
+//Generously adapted from:
+//https://github.com/kijiproject/kiji-express/blob/master/kiji-express/src/main/scala/org/kiji/express/flow/framework/serialization/AvroSerializer.scala
+//Which has as an ASL2.0 license
+public class AvroGenericSerializer extends Serializer<GenericContainer> {
+
+ AvroSchemaRegistry registry = new GenericAvroSchemaRegistry();
--- End diff --
I would advise against using GenericAvroSchemaRegistry as default. It looks
to be very costly. you can try a test run with sufficient input load and verify
it..
> AvroGenericRecordBolt will not work in a topology with multiple workers
> -----------------------------------------------------------------------
>
> Key: STORM-1504
> URL: https://issues.apache.org/jira/browse/STORM-1504
> Project: Apache Storm
> Issue Type: Bug
> Reporter: Aaron Dossett
> Assignee: Aaron Dossett
> Priority: Critical
>
> It receives Avro GenericRecord objects, which leads to serialization errors
> in a multi-worker topology. Specifically, GenericData.Record will throw a
> serialization error.
> A serializer for this class should be added and registered.
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