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https://issues.apache.org/jira/browse/FLINK-4383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15420766#comment-15420766
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ASF GitHub Bot commented on FLINK-4383:
---------------------------------------

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2365#discussion_r74737803
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/akka/messages/RemoteRpcInvocation.java
 ---
    @@ -0,0 +1,187 @@
    +/*
    + * 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.flink.runtime.rpc.akka.messages;
    +
    +import org.apache.flink.util.Preconditions;
    +import org.apache.flink.util.SerializedValue;
    +
    +import java.io.IOException;
    +import java.io.ObjectInputStream;
    +import java.io.ObjectOutputStream;
    +import java.io.Serializable;
    +
    +/**
    + * Remote rpc invocation message which is used when the actor 
communication is remote and, thus, the
    + * message has to be serialized.
    + * <p>
    + * In order to fail fast and report an appropriate error message to the 
user, the method name, the
    + * parameter types and the arguments are eagerly serialized. In case the 
the invocation call
    + * contains a non-serializable object, then an {@link IOException} is 
thrown.
    + */
    +public class RemoteRpcInvocation implements RpcInvocation, Serializable {
    +   private static final long serialVersionUID = 6179354390913843809L;
    +
    +   // Serialized invocation data
    +   private final SerializedValue<RemoteRpcInvocation.MethodInvocation> 
serializedMethodInvocation;
    +
    +   // Transient field which is lazily initialized upon first access to the 
invocation data
    +   private transient RemoteRpcInvocation.MethodInvocation methodInvocation;
    +
    +   public  RemoteRpcInvocation(
    +           final String methodName,
    +           final Class<?>[] parameterTypes,
    +           final Object[] args) throws IOException {
    +
    +           serializedMethodInvocation = new SerializedValue<>(new 
RemoteRpcInvocation.MethodInvocation(methodName, parameterTypes, args));
    --- End diff --
    
    You're right. Will add it.


> Check parameters for serializability before sending a remote RpcInvocation 
> message
> ----------------------------------------------------------------------------------
>
>                 Key: FLINK-4383
>                 URL: https://issues.apache.org/jira/browse/FLINK-4383
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Distributed Coordination
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>
> Before sending a remote {{RpcInvocation}} message we should check that the 
> rpc arguments are serializable. If not we should eagerly fail with an 
> appropriate exception message.
> If we don't do this, then Akka will silently fail serializing the message 
> without telling the user.



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