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https://issues.apache.org/jira/browse/HADOOP-12579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15306174#comment-15306174
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Arun Suresh commented on HADOOP-12579:
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[~drankye], [~wheat9], Am seeing a bunch of test failures in trunk builds since
this was committed. For YARN, I had raised YARN-5163 to track the specific
failures. I notice that once I revert HADOOP-12579 locally,
{{TestClientToAMTokens}} does indeed pass.
Furthermore, a lot of MR tests that use MiniYarnCluster seem to fail with the
following error message in its Map tasks :
{noformat}
2016-05-29 19:35:08,358 WARN [main] org.apache.hadoop.mapred.YarnChild:
Exception running child : java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy10.getTask(Unknown Source)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:136)
Caused by: com.google.protobuf.ServiceException: Too many or few parameters for
request. Method: [getTask], Expected: 2, Actual: 1
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
... 2 more
2016-05-29 19:35:08,359 INFO [main]
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping MapTask metrics
system...
{noformat}
Again, after reverting this locally, they pass..
Kindly do take a look
> Deprecate and remove WriteableRPCEngine
> ---------------------------------------
>
> Key: HADOOP-12579
> URL: https://issues.apache.org/jira/browse/HADOOP-12579
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Haohui Mai
> Assignee: Kai Zheng
> Fix For: 3.0.0-alpha1
>
> Attachments: HADOOP-12579-v1.patch, HADOOP-12579-v10.patch,
> HADOOP-12579-v11.patch, HADOOP-12579-v3.patch, HADOOP-12579-v4.patch,
> HADOOP-12579-v5.patch, HADOOP-12579-v6.patch, HADOOP-12579-v7.patch,
> HADOOP-12579-v8.patch, HADOOP-12579-v9.patch
>
>
> The {{WriteableRPCEninge}} depends on Java's serialization mechanisms for RPC
> requests. Without proper checks, it has be shown that it can lead to security
> vulnerabilities such as remote code execution (e.g., COLLECTIONS-580,
> HADOOP-12577).
> The current implementation has migrated from {{WriteableRPCEngine}} to
> {{ProtobufRPCEngine}} now. This jira proposes to deprecate
> {{WriteableRPCEngine}} in branch-2 and to remove it in trunk.
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