我用的是Hadoop-common 2.6.4jar,可是明明包里面有这个类却引用不了,然后我看了下包里面是一个抽象类.................................................................... 所以就换了一个2.7.0然后就可以引用了. public class Configuration implements terable<Map.Entry<String,String>>,Writable { 这个类是实现了另外两…

这是因为缺少一个hadoop-common包,引入即可: <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-common</artifactId> <version>2.6.5</version> </dependency> 参考:https://blog.csdn.net/u010429286/article/detail…

FATAL conf.Configuration: error parsing conf file: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: Invalid byte 1 of 1-byte UTF-8 sequence. 14/07/12 23:51:40 ERROR namenode.NameNode: java.lang.RuntimeException: com.sun.org.…

换了个环境,出现此异常 016-10-18 23:54:01,334 WARN [org.apache.hadoop.util.NativeCodeLoader] - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 2016-10-18 23:54:01,668 INFO [org.apache.hadoop.conf.Configurati…

今天在测试mapreduce的程序时,就是简单的去重,对照课本上的程序和自己的程序,唯一不同的就是“org.apache.hadoop.mapreduce.Reducer.Context context”,我写的程序如下: package com.pro.bq; import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.…

用java运行Hadoop例程报错:org.apache.hadoop.fs.LocalFileSystem cannot be cast to org.apache.所写代码如下: package com.pcitc.hadoop; import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.h…

报错 java.lang.Exception: java.lang.ClassCastException: org.apache.hadoop.mapreduce.lib.input.FileSplit cannot be cast to org.apache.hadoop.mapred.FileSplit    at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)    at org.a…

执行HBase时常会遇到个错误,我就有这种经历. ERROR: org.apache.hadoop.hbase.MasterNotRunningException: Retried 7 times 检查日志:org.apache.hadoop.ipc.RPC$VersionMismatch: Protocol org.apache.hadoop.hdfs.protocol.ClientProtocol version mismatch. (client = 42, server = 41) 假设…

import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; public class TestHDFS { public static void main(String[] args) throws Exception{ Configuration conf = new Configuration(); conf.set…

错误日志如下: -- ::, DEBUG [org.apache.hadoop.metrics2.lib.MutableMetricsFactory] - field org.apache.hadoop.metrics2.lib.MutableRate org.apache.hadoop.security.UserGroupInformation$UgiMetrics.loginSuccess with annotation @org.apache.hadoop.metrics2.annotat…