7

我正在尝试让猪开始并失败:

 $ pig
2013-05-10 18:03:22,972 [main] INFO  org.apache.pig.Main - Apache Pig version 0.11.1 (r1459641) compiled Mar 22 2013, 02:13:53
2013-05-10 18:03:22,972 [main] INFO  org.apache.pig.Main - Logging error messages to: /Users/barclaydunn/Environment/pig-0.11.1/pig_1368223402970.log
2013-05-10 18:03:23,151 [main] INFO  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file system at: hdfs://stage-hadoop101.cluster:8020/hbase
2013-05-10 18:03:23,704 [main] ERROR org.apache.pig.Main - ERROR 2999: Unexpected internal error. Failed to create DataStorage
Details at logfile: /Users/barclaydunn/Environment/pig-0.11.1/pig_1368223402970.log

日志文件内容:

 $ cat /Users/barclaydunn/Environment/pig-0.11.1/pig_1368223402970.log
Error before Pig is launched
----------------------------
ERROR 2999: Unexpected internal error. Failed to create DataStorage

java.lang.RuntimeException: Failed to create DataStorage
    at org.apache.pig.backend.hadoop.datastorage.HDataStorage.init(HDataStorage.java:75)
    at org.apache.pig.backend.hadoop.datastorage.HDataStorage.<init>(HDataStorage.java:58)
    at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:204)
    at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:117)
    at org.apache.pig.impl.PigContext.connect(PigContext.java:240)
    at org.apache.pig.PigServer.<init>(PigServer.java:213)
    at org.apache.pig.PigServer.<init>(PigServer.java:198)
    at org.apache.pig.tools.grunt.Grunt.<init>(Grunt.java:47)
    at org.apache.pig.Main.run(Main.java:535)
    at org.apache.pig.Main.main(Main.java:157)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: org.apache.hadoop.ipc.RemoteException: Server IPC version 7 cannot communicate with client version 4
    at org.apache.hadoop.ipc.Client.call(Client.java:1070)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
    at com.sun.proxy.$Proxy1.getProtocolVersion(Unknown Source)
    at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
    at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
    at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:119)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:238)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:203)
    at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:89)
    at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1386)
    at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
    at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1404)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:254)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:123)
    at org.apache.pig.backend.hadoop.datastorage.HDataStorage.init(HDataStorage.java:72)
    ... 14 more
================================================================================

搜索“服务器 IPC 版本 7 无法与客户端版本 4 通信”并没有发现任何有用的信息。

4

2 回答 2

5

设置HADOOP_HOME为指向您正在使用的 hadoop。

猪开始页面:

(您可以通过将 HADOOP_HOME 设置为指向您安装 Hadoop 的目录来使用不同版本的 Hadoop 运行 Pig。如果您不设置 HADOOP_HOME,默认情况下 Pig 将使用嵌入式版本运行,当前为 Hadoop 1.0.0。)

IPC 第 4 版适用于 Hadoop 1.0,而第 7 版适用于 Hadoop 2.0,因此听起来您正在使用其嵌入式 hadoop 版本运行 pig,但尝试与 Hadoop 2 集群通信。

于 2013-05-10T22:38:12.733 回答
0

当 cdh3 作业尝试与 cdh4 HDFS 通信时,可能会导致错误“服务器 IPC 版本 7 无法与客户端版本 4 通信”。

检查您的 mapred.job.tracker 和 fs.default.name 设置

于 2013-09-09T15:06:02.863 回答