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I have installed Ubuntu 14.04 (32 Bit) and tried to install the Apache Hadoop 2.4 version but whenever i try to start the services i am getting the following error WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable I tried all solutions for re-compiling the native libraries but those all are solutions for 64 bit OS. I am getting frustrated why this is happening and when i run the $ jps command it shows only NameNode running .. Can any please help me out on this.

Rajendra B
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  • Keep in mind this is only a warning and the cluster should work just fine even with this warning. It simply means that the C++ native optimized code will not be used. It will use Java for those implementation instead. I am running the same configuration for 32 bit ubuntu and do not have this problem btw. – Chris Hinshaw Jul 07 '14 at 13:51
  • @ChrisHinshaw can u give me the link for the tutorial which u used for the configuration or can u provide me the steps to set up the hadoop on the 32 bit ubuntu. – Rajendra B Jul 08 '14 at 05:58

1 Answers1

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You can run this to help you identify what libraries you are missing.

${HADOOP_BIN}/hadoop checknative

This will give you something like the following.

chris@chris:/opt/hadoop/apps/hadoop$ ./bin/hadoop checknative
14/07/07 08:56:25 WARN bzip2.Bzip2Factory: Failed to load/initialize native-bzip2 library system-native, will use pure-Java version
14/07/07 08:56:25 INFO zlib.ZlibFactory: Successfully loaded & initialized native-zlib library
Native library checking:
hadoop: true /opt/hadoop/apps/versions/hadoop-2.4.0/lib/native/libhadoop.so.1.0.0
zlib:   true /lib/i386-linux-gnu/libz.so.1
snappy: false 
lz4:    true revision:99
bzip2:  false
Chris Hinshaw
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