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Date: Thu, 29 Sep 2011 22:13:45 +0000 (UTC)
From: "Thomas Graves (Created) (JIRA)" <jira@apache.org>
To: mapreduce-dev@hadoop.apache.org
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Subject: [jira] [Created] (MAPREDUCE-3124) mapper failed with failed to load
 native libs
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mapper failed with failed to load native libs
---------------------------------------------

                 Key: MAPREDUCE-3124
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3124
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.0
            Reporter: Thomas Graves
            Priority: Blocker
             Fix For: 0.23.0


hadoop jar hadoop-mapreduce-examples-*.jar sort -Dmapreduce.job.acl-view
-job=* -Dmapreduce.map.output.compress=true 
-Dmapreduce.map.output.compress.codec=org.apache.hadoop.io.compress.GzipCodec 
-Dmapreduce.output.fileoutputformat.compress=true  -Dmapreduce.output.fileoutputformat.compression.type=NONE -Dmap
reduce.output.fileoutputformat.compression.codec=org.apache.hadoop.io.compress.GzipCodec  -outKey
org.apache.hadoop.io.Text -outValue org.apache.hadoop.io.Text  Compression/textinput Compression/textoutput-1317315994

This will fail with native libs not found error unless -Dmapred.child.java.opts='-Djava.library.path=${HADOOP_COMMON_HOME}/lib/native/Linux-i386-32' is added.


The error in container log:


2011-09-29 17:06:56,787 DEBUG org.apache.hadoop.util.NativeCodeLoader: Trying to load the custom-built native-hadoop
library...2011-09-29 17:06:56,787 DEBUG org.apache.hadoop.util.NativeCodeLoader: Failed to load native-hadoop with
error: java.lang.UnsatisfiedLinkError: no hadoop in java.library.path2011-09-29 17:06:56,787 DEBUG
org.apache.hadoop.util.NativeCodeLoader:
java.library.path=/share/gridjdk-1.6.0_21/jre/lib/i386/server:/share/gridjdk-1.6.0_21/jre/lib/i386:/share/gridjdk-1.6.0_21/jre/../lib/i386:/tmp/mapred-local/usercache/hadoopqa/appcache/application_1317314754104_0012/container_1317314754104_0012_01_000002:/current/lib:/usr/java/packages/lib/i386:/lib:/usr/lib2011-09-29
17:06:56,787 WARN org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop library for your platform...
using builtin-java classes where applicable


Also note that the error that shows up at the application master for this is terrible:

Container killed by the ApplicationMaster. Container killed on request. Exit code is 137 Too Many fetch failures.Failing the attempt 


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