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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6206) RequestHedgingRMFailoverProvider may have concurrency issues when accessing the same request object
Date Fri, 17 Feb 2017 00:53:41 GMT

     [ https://issues.apache.org/jira/browse/YARN-6206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jian He updated YARN-6206:
--------------------------
    Description: 
Here, since multiple threads are accessing the same request object - 'args', and the request
protobuf implementation is not synchronized. That caused errors like below: 
{code}
       Callable<Object> c = new Callable<Object>() {
            @Override
            public Object call() throws Exception {
              return method.invoke(pInfo.proxy, args);
            }
          };
{code}
{code}
java.lang.ArrayIndexOutOfBoundsException: 1
at java.util.ArrayList.elementData(ArrayList.java:418)
at java.util.ArrayList.get(ArrayList.java:431)
at com.google.protobuf.LazyStringArrayList.getByteString(LazyStringArrayList.java:157)
at com.google.protobuf.UnmodifiableLazyStringList.getByteString(UnmodifiableLazyStringList.java:66)
at org.apache.hadoop.yarn.proto.YarnServiceProtos$GetApplicationsRequestProto.getSerializedSize(YarnServiceProtos.java:17070)
at com.google.protobuf.AbstractMessageLite.writeDelimitedTo(AbstractMessageLite.java:84)
at org.apache.hadoop.ipc.ProtobufRpcEngine$RpcMessageWithHeader.write(ProtobufRpcEngine.java:356)
at org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:1059)
at org.apache.hadoop.ipc.Client.call(Client.java:1457)
at org.apache.hadoop.ipc.Client.call(Client.java:1398)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
at com.sun.proxy.$Proxy17.getApplications(Unknown Source)
at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getApplications(ApplicationClientProtocolPBClientImpl.java:251)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:282)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:194)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:176)
at com.sun.proxy.$Proxy18.getApplications(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43){code}

> RequestHedgingRMFailoverProvider may have concurrency issues when accessing the same
request object
> ---------------------------------------------------------------------------------------------------
>
>                 Key: YARN-6206
>                 URL: https://issues.apache.org/jira/browse/YARN-6206
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>
> Here, since multiple threads are accessing the same request object - 'args', and the
request protobuf implementation is not synchronized. That caused errors like below: 
> {code}
>        Callable<Object> c = new Callable<Object>() {
>             @Override
>             public Object call() throws Exception {
>               return method.invoke(pInfo.proxy, args);
>             }
>           };
> {code}
> {code}
> java.lang.ArrayIndexOutOfBoundsException: 1
> at java.util.ArrayList.elementData(ArrayList.java:418)
> at java.util.ArrayList.get(ArrayList.java:431)
> at com.google.protobuf.LazyStringArrayList.getByteString(LazyStringArrayList.java:157)
> at com.google.protobuf.UnmodifiableLazyStringList.getByteString(UnmodifiableLazyStringList.java:66)
> at org.apache.hadoop.yarn.proto.YarnServiceProtos$GetApplicationsRequestProto.getSerializedSize(YarnServiceProtos.java:17070)
> at com.google.protobuf.AbstractMessageLite.writeDelimitedTo(AbstractMessageLite.java:84)
> at org.apache.hadoop.ipc.ProtobufRpcEngine$RpcMessageWithHeader.write(ProtobufRpcEngine.java:356)
> at org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:1059)
> at org.apache.hadoop.ipc.Client.call(Client.java:1457)
> at org.apache.hadoop.ipc.Client.call(Client.java:1398)
> at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
> at com.sun.proxy.$Proxy17.getApplications(Unknown Source)
> at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getApplications(ApplicationClientProtocolPBClientImpl.java:251)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:282)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:194)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:176)
> at com.sun.proxy.$Proxy18.getApplications(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43){code}



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