Please remove LzoCodec from config. Cheers
On Feb 12, 2014, at 5:12 PM, Li Li <fancye...@gmail.com> wrote: > <property> > <name>io.compression.codecs</name> > > <value>org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec,com.hadoop.compression.lzo.LzoCodec,com.hadoop.compression.lzo.LzopCodec</value> > <description>A list of the compression codec classes that can be used > for compression/decompression.</description> > </property> > > <property> > <name>io.compression.codec.lzo.class</name> > <value>com.hadoop.compression.lzo.LzoCodec</value> > </property> > > On Thu, Feb 13, 2014 at 2:54 AM, Ted Yu <yuzhih...@gmail.com> wrote: >> What's the value for "io.compression.codecs" config parameter ? >> >> Thanks >> >> >> On Tue, Feb 11, 2014 at 10:11 PM, Li Li <fancye...@gmail.com> wrote: >>> >>> I am runing example of wordcout but encount an exception: >>> I googled and know lzo compression's license is incompatible with apache's >>> so it's not built in. >>> the question is I am using default configuration of hadoop 1.2.1, why >>> it need lzo? >>> anothe question is, what's Cleaning up the staging area mean? >>> >>> >>> ./bin/hadoop jar hadoop-examples-1.2.1.jar wordcount /lili/data.txt >>> /lili/test >>> >>> 14/02/12 14:06:10 INFO input.FileInputFormat: Total input paths to process >>> : 1 >>> 14/02/12 14:06:10 INFO mapred.JobClient: Cleaning up the staging area >>> >>> hdfs://172.19.34.24:8020/home/hadoop/dfsdir/hadoop-hadoop/mapred/staging/hadoop/.staging/job_201401080916_0216 >>> java.lang.IllegalArgumentException: Compression codec >>> com.hadoop.compression.lzo.LzoCodec not found. >>> at >>> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:116) >>> at >>> org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:156) >>> at >>> org.apache.hadoop.mapreduce.lib.input.TextInputFormat.isSplitable(TextInputFormat.java:47) >>> at >>> org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:258) >>> at >>> org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1054) >>> at >>> org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1071) >>> at >>> org.apache.hadoop.mapred.JobClient.access$700(JobClient.java:179) >>> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:983) >>> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936) >>> at java.security.AccessController.doPrivileged(Native Method) >>> at javax.security.auth.Subject.doAs(Subject.java:415) >>> at >>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190) >>> at >>> org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936) >>> at org.apache.hadoop.mapreduce.Job.submit(Job.java:550) >>> at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580) >>> at org.apache.hadoop.examples.WordCount.main(WordCount.java:82) >>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>> at >>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) >>> at >>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>> at java.lang.reflect.Method.invoke(Method.java:601) >>> at >>> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68) >>> at >>> org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139) >>> at >>> org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64) >>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>> at >>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) >>> at >>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>> at java.lang.reflect.Method.invoke(Method.java:601) >>> at org.apache.hadoop.util.RunJar.main(RunJar.java:160) >>> Caused by: java.lang.ClassNotFoundException: >>> com.hadoop.compression.lzo.LzoCodec >>> at java.net.URLClassLoader$1.run(URLClassLoader.java:366) >>> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >>> at java.security.AccessController.doPrivileged(Native Method) >>> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:423) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:356) >>> at java.lang.Class.forName0(Native Method) >>> at java.lang.Class.forName(Class.java:264) >>> at >>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:810) >>> at >>> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:109) >> >>
