Sangjin Lee created MAPREDUCE-6577:
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Summary: MR AM unable to load native library without
MR_AM_ADMIN_USER_ENV set
Key: MAPREDUCE-6577
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6577
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mr-am
Affects Versions: 2.6.0
Reporter: Sangjin Lee
Assignee: Sangjin Lee
Priority: Critical
If yarn.app.mapreduce.am.admin.user.env (or yarn.app.mapreduce.am.env) is not
configured to set LD_LIBRARY_PATH, MR AM will fail to load the native library:
{noformat}
2015-12-15 21:29:22,473 WARN [main] org.apache.hadoop.util.NativeCodeLoader:
Unable to load native-hadoop library for your platform... using builtin-java
classes where applicable
{noformat}
As a result, any code that needs the hadoop native library in the MR AM will
fail. For example, an uber-AM with lz4 compression for the mapper task will
fail:
{noformat}
2015-12-15 21:30:17,575 WARN [uber-SubtaskRunner]
org.apache.hadoop.mapred.LocalContainerLauncher: Exception running local
(uberized) 'child' : java.lang.RuntimeException: native lz4 library not
available
at
org.apache.hadoop.io.compress.Lz4Codec.getCompressorType(Lz4Codec.java:125)
at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:148)
at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:163)
at org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:114)
at org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:97)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1602)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1482)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:457)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runSubtask(LocalContainerLauncher.java:391)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runTask(LocalContainerLauncher.java:309)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.access$200(LocalContainerLauncher.java:195)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler$1.run(LocalContainerLauncher.java:238)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
{noformat}
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