Create input file in HDFS

Question

I'm trying to create an input file in the hdfs using this command :

hduser@salma-SATELLITE-C855-1EQ:/usr/local/hadoop$ ./bin/hadoop fs -mkdir /in

but it gives me an error that the connection failed :

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
16/10/09 02:12:04 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
mkdir: Call From salma-SATELLITE-C855-1EQ/127.0.1.1 to localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

I already run hadoop service with start-all.sh :

hduser@salma-SATELLITE-C855-1EQ:/usr/local/hadoop$ jps
20437 Jps
20030 SecondaryNameNode
19839 DataNode

So can anyone help to solve this problem

Try : hadoop dfs -mkdir -p /in Otherwise try to open your hadoop UI localhost:50070 — cody123
– cody123, Commented Oct 9, 2016 at 4:16
@Spyros_av yes i did this steps and the problem with namenode is solved but I have another problem now : 16/10/09 15:48:17 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable — Salma Hakim
– Salma Hakim, Commented Oct 9, 2016 at 14:59

ozw1z5rd · Accepted Answer · 2016-10-09 08:35:35Z

1

Your are missing the namenode ( primary ) this is where you code is attempitng to connect. Check the log to understand why it does not started.

answered Oct 9, 2016 at 8:35

ozw1z5rd

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2 Comments

Salma Hakim Over a year ago

I fixed the problem with namenode but when I retry the command it gives me another problem : 16/10/09 15:48:17 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

ozw1z5rd Over a year ago

This is has been already fixed here

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