Hadoop：不能使用Jps命令

问题描述

问题是：

  hduser @ saket -K53SM：/ usr / local / hadoop $ jps 
程序'jps'可以在以下软件包中找到：
 * openjdk-6-jdk 
 * openjdk-7-jdk 
尝试：sudo apt-get install< selected package> 
  

我的配置是

  hduser @ saket-K53SM：/ usr / local / hadoop $ java -version 
 java版本1.6.0_33
 Java™SE运行时环境（build 1.6.0_33- b04）
 Java HotSpot™64位服务器虚拟机（构建20.8-b03，混合模式）
  

设置conf / hadoop-env.sh

  hduser @ saket -K53SM：/ usr / local / hadoop $ cat conf / hadoop-env.sh | grep JAVA_HOME 
＃唯一需要的环境变量是JAVA_HOME。所有其他的都是
＃在这个文件中设置JAVA_HOME，以便它在
上正确定义export JAVA_HOME = / usr / lib / jvm / jdk1.6.0_33 / 
  

我知道有一个问题（http://stackoverflow.com/questions/7843422/hadoop-jps-can-not-find-java-安装）与此类似。
但是我在这里安装了Sun jdk。所以任何帮助将不胜感激。

解决方案

这实际上不是Hadoop问题。 Hadoop不使用JPS。

如果找不到JPS，则必须将其放入路径或创建别名。
可以在 $ JAVA_HOME / bin / jps 下找到JPS可执行文件。

例如别名可以是：
$ b $ pre> alias jps ='/ usr / lib / jvm / jdk1.6.0_33 / bin / jps'


或者如果您不关心使用JPS，您可以改为使用

  ps aux | grep java 
  

给你相同的结果;）

The problem is

  hduser@saket-K53SM:/usr/local/hadoop$ jps
  The program 'jps' can be found in the following packages:
  * openjdk-6-jdk
  * openjdk-7-jdk
 Try: sudo apt-get install <selected package>

My configuration is

hduser@saket-K53SM:/usr/local/hadoop$ java -version
java version "1.6.0_33"
Java(TM) SE Runtime Environment (build 1.6.0_33-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03, mixed mode)

set up conf/hadoop-env.sh

hduser@saket-K53SM:/usr/local/hadoop$ cat conf/hadoop-env.sh | grep JAVA_HOME
# The only required environment variable is JAVA_HOME.  All others are
# set JAVA_HOME in this file, so that it is correctly defined on
export JAVA_HOME=/usr/lib/jvm/jdk1.6.0_33/

I know there is a question (http://stackoverflow.com/questions/7843422/hadoop-jps-can-not-find-java-installed) similar to this one.But i have installed Sun jdk here. So any help would be appreciated..

解决方案

That is actually not a Hadoop problem. Hadoop does not use JPS.

If JPS can't be found, you have to put it into your path or create an alias.The JPS executable can be found under $JAVA_HOME/bin/jps.

The alias for example could be:

alias jps='/usr/lib/jvm/jdk1.6.0_33/bin/jps'

Or if you don't care about using JPS, you could instead do a

ps aux | grep java

which will approx. give you the same result ;)

这篇关于Hadoop：不能使用Jps命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！