Hello:
I have followed this link:http://code.google.com/p/hadoop-gpl-
compression/wiki/FAQ to install lzo compression library,and copy
hadoop-lzo-0.4.4.jar to $HADOOP_HOME/lib,and all files under
..lib/native/Linux-amd64-64 to $HADOOP_HOME/lib/native/Linux-amd64-64,
and run example,but got this errors:
----------------------------------------------------------------------------------------------------------------
Exception in thread "main" java.lang.IllegalArgumentException: Compression
codec
org.apache.hadoop.io.compress.GzipCodec not found.
at
org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:96)
at
org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:134)
at com.hadoop.compression.lzo.LzoIndex.createIndex(LzoIndex.java:202)
at
com.hadoop.compression.lzo.LzoIndexer.indexSingleFile(LzoIndexer.java:117)
at
com.hadoop.compression.lzo.LzoIndexer.indexInternal(LzoIndexer.java:98)
at com.hadoop.compression.lzo.LzoIndexer.index(LzoIndexer.java:52)
at com.hadoop.compression.lzo.LzoIndexer.main(LzoIndexer.java:137)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.lang.ClassNotFoundException:
org.apache.hadoop.io.compress.GzipCodec
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:762)
at
org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:89)
... 11 more
----------------------------------------------------------------------------------------------------------------
and then I try to add this to hadoop-env.sh:
export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:/usr/local/hadoop/hadoop-0.20.2/lib/
Same problem as before,this problem is killing me,because it has surrounded me
for one month.
