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

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

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

在执行spark on hive 的时候在  sql.show()处报错 : Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/CanUnbuffer 报错详情: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/CanUnbuffer at jav

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

org.apache.hadoop.conf中的最后一个类,也是这个包中以后用的最频繁的一个,Configurable算是肉体,Configuration算是灵魂吧 package org.apache.hadoop.conf; /** Base class for things that may be configured with a {@link Configuration}. */ public class Configured implements Configurable { pri

终于遇到第一块硬骨头 Hadoop没有使用java.util.Properties管理配置文件,而是自己定义了一套配置文件管理系统和自己的API. package org.apache.hadoop.conf; import java.io.BufferedInputStream; import java.io.DataInput; import java.io.DataOutput; import java.io.File; import java.io.FileInputStream; im

从包名可以看出这个包里面都是配置相关的类:从类名上可以看出这是一个接口,或者说配置类接口.内容很少. package org.apache.hadoop.conf; /** Something that may be configured with a {@link Configuration}. */ public interface Configurable { /** Set the configuration to be used by this object. */ void setC

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.

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

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

ubuntu@VM---ubuntu:~$ sudo apt--src.tar.gz Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package hadoop--src.tar.gz E: Couldn-src.tar.gz' E: Couldn-src.tar.gz' ubuntu@VM---ubuntu:~$ sudo

在项目中添加src中添加NativeIO类 /** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF lice

ERROR tool.ImportTool: Import failed: java.io.IOException: java.lang.ClassNotFoundException: org.apache.hadoop.hive.conf.HiveConf sqoop从mysql导入到hive报错: 18/08/22 13:30:53 ERROR tool.ImportTool: Import failed: java.io.IOException: java.lang.ClassNotFou

用的apache Hadoop3.X,今天运行MR报错: 找不到或无法加载主类 org.apache.hadoop.mapreduce.v2.app.MRAppMaster 关键需要配置两个配置:mapred-site.xml 和 yarn-site.xml下面配置hadoop classpath. 先运行shell命令:hadoop classpath 复制输出到上面两个文件中: 重启下集群就好了.

问题描述: 前几天一个同事来说,通过phoenix创建表失败了,一直报表存在的错误,删除也报错,然后就针对这个问题找下解决方案. 问题分析: 1.通过phoenix创建表,一直卡住不动了.创建语句如下: CREATE TABLE SYNC_BUSINESS_INFO_BYDAY_EFFECT( ID VARCHAR, DAY_ID VARCHAR, PROV_ID VARCHAR, PROV_NAME VARCHAR, AREA_ID VARCHAR, AREA_NAME VARCHAR, CI

在成功启动Hive之后感慨这次终于没有出现Bug了,满怀信心地打了长长的创建表格的命令,结果现实再一次给了我一棒,报了以下的错误Error, return code 1 from org.apache.Hadoop.hive.ql.exec.DDLTask. MetaException,看了一下错误之后,先是楞了一下,接着我就发出感慨,自从踏上编程这条不归路之后,就没有一天不是在找Bug的路上就是在处理Bug,给自己贴了个标签:找Bug就跟吃饭一样的男人.抒发心中的感慨之后,该干活还是的干活.

在配置好hive后启动报错信息如下: [walloce@bigdata-study- hive--cdh5.3.6]$ bin/hive Logging initialized using configuration in file:/opt/modules/cdh/hive--cdh5.3.6/conf/hive-log4j.properties Exception in thread "main" java.lang.RuntimeException: java.lang.Runt