首页 \ 问答 \ Protobuf RPC在Hadoop 2.2.0单节点服务器上不可用?(Protobuf RPC not available on Hadoop 2.2.0 single node server?)

Protobuf RPC在Hadoop 2.2.0单节点服务器上不可用?(Protobuf RPC not available on Hadoop 2.2.0 single node server?)

我正在尝试按照本教程在我安装的本地单节点集群上运行hadoop 2.2.0 mapreduce作业: http//codesfusion.blogspot.co.at/2013/10/setup-hadoop-2x-220-on- ubuntu.html?m = 1的

虽然在服务器端引发了以下异常:

org.apache.hadoop.ipc.RpcNoSuchProtocolException: Unknown protocol: org.apache.hadoop.yarn.api.ApplicationClientProtocolPB
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.getProtocolImpl(ProtobufRpcEngine.java:527)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:566)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)

有没有办法让我配置Protobuf RPC在服务器端可用? 我需要hadoop本机库吗? 或者我可以在客户端以某种方式切换到Writables / Avro RPC吗?


I am trying to run a hadoop 2.2.0 mapreduce job on my local single node cluster installed by following this tutorial: http://codesfusion.blogspot.co.at/2013/10/setup-hadoop-2x-220-on-ubuntu.html?m=1

Though on the server side the following exception is thrown:

org.apache.hadoop.ipc.RpcNoSuchProtocolException: Unknown protocol: org.apache.hadoop.yarn.api.ApplicationClientProtocolPB
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.getProtocolImpl(ProtobufRpcEngine.java:527)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:566)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)

Is there a way for me to configure Protobuf RPC to be available on server side? Do I need the hadoop native libraries for this? Or can I switch somehow on the client side to Writables/Avro RPC?


原文:
更新时间:2022-06-01 11:06

最满意答案

鲍勃鲍威尔有一个很好的教程 ,直接在内存中访问像素映射。


Bob Powell has an excellent tutorial on accessing pixel maps directly in memory.

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