You don't need to configure the classpath if you just extracted the Hadoop
tarball under /usr/local/.
The only required setting is JAVA_HOME, everything else should be inferred. Is
it possible some directories got moved around after unpacking?
On 2018/10/14, 9:32 AM, "razo@" <post.bgu.ac.il r...@post.bgu.ac.il> wrote:
So how should I configure it?
I looked over here
https://stackoverflow.com/questions/28260653/where-is-the-classpath-set-for-hadoop
to Siva's answer and the output of ($HADOOP+HOME/bin/hadoop classpath) is :
hadoop2@master:~$ $HADOOP_HOME/bin/hadoop classpath
/usr/local/hadoop-2.9.1/etc/hadoop:/usr/local/hadoop-2.9.1/share/hadoop/common/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/common/*:/usr/local/hadoop-2.9.1/share/hadoop/hdfs:/usr/local/hadoop-2.9.1/share/hadoop/hdfs/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/hdfs/*:/usr/local/hadoop-2.9.1/share/hadoop/yarn/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/yarn/*:/usr/local/hadoop-2.9.1/share/hadoop/mapreduce/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/mapreduce/*:/usr/local/hadoop-2.9.1/contrib/capacity-scheduler/*.jar
But the problem stayed the same.
How should I configure the classpath to be what you suggested?
P.S
hadoop2@master:~$ $HADOOP_HOME/bin/hadoop jar
$HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar
org.apache.hadoop.examples.Grep input output 'dfs[a-z.]+'
Error: Could not find or load main class org.apache.hadoop.util.RunJar
On 2018/10/14 15:55:06, ITD <itdir...@mail.ru.INVALID> wrote:
> Try and check your classpath, it looks a bit strange:
>
> /usp/hdfs: what's this?
>
> Working classpath is:
> /usr/local/hadoop/etc/hadoop:\
> /usr/local/hadoop/share/hadoop/common/lib/*:\
> /usr/local/hadoop/share/hadoop/common/*:\
> /usr/local/hadoop/share/hadoop/hdfs:\
> /usr/local/hadoop/share/hadoop/hdfs/lib/*:\
> /usr/local/hadoop/share/hadoop/hdfs/*:\
> /usr/local/hadoop/share/hadoop/mapreduce/lib/*:\
> /usr/local/hadoop/share/hadoop/mapreduce/*:\
> /usr/local/hadoop/share/hadoop/yarn:\
> /usr/local/hadoop/share/hadoop/yarn/lib/*:\
> /usr/local/hadoop/share/hadoop/yarn/*
>
>
>
> >Воскресенье, 14 октября 2018, 18:26 +03:00 от r...@post.bgu.ac.il
<r...@post.bgu.ac.il>:
> >
> >I tried, I still get the same error.
> >
> >On 2018/10/14 15:18:57, ITD < itdir...@mail.ru.INVALID > wrote:
> >> Class names are case-sensitive in Java, so try
> >>
> >> $HADOOP_HOME/bin/hadoop jar
$HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.9.1.jar Grep
input output 'dfs[a-z.]+'
> >>
> >> >Воскресенье, 14 октября 2018, 18:04 +03:00 от Or Raz <
r...@post.bgu.ac.il >:
> >> >
> >> >I am using Hadoop 2.9.1 standalone (the folder I am using is after
successful compilation of the source code) and whenever I run a Hadoop command
such as (where$HADOOP_HOME= /usr/local/hadoop, the directory of Hadoop)
> >> >$HADOOP_HOME/bin/hadoop jar
$HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.9.1.jar grep
input output 'dfs[a-z.]+'
> >> >I get this error :
> >> >>Error: Could not find or load main class
org.apache.hadoop.util.RunJar
> >> >At first, I was thinking that I am missing some environment variables
but are they necessary for the standalone case? Why did I get this error? (I
even replaced with another example, I believe it is a classpath problem)
> >> >
> >> >hadoop2@master:/usr/local/hadoop-2.9.1$ bin/hadoop classpath
> >>
>/usr/local/hadoop-2.9.1/etc/hadoop:/usr/local/hadoop-2.9.1/share/hadoop/common/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/common/*:/usr/local/hadoop-2.9.1/share/hadoop/hdfs:/usp/hdfs/*:/usr/local/hadoop-2.9.1/share/hadoop/yarn/lib/*:/usr/local/hadoop-2.9.1/share/hadoop/yarn/*:/usr/local/hadoop-2.9.1/share/hadoop/mapreduce/lib/*:/usr/local/hadoop-2.9.jar
> >>
> >>
> >>
> >>
> >
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