Gera Shegalov created MAPREDUCE-5952:
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Summary: LocalContainerLauncher#renameMapOutputForReduce
incorrectly assumes a single dir for mapOutIndex
Key: MAPREDUCE-5952
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5952
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mr-am, mrv2
Affects Versions: 2.3.0
Reporter: Gera Shegalov
Assignee: Gera Shegalov
Priority: Blocker
The javadoc comment for {{renameMapOutputForReduce}} incorrectly refers to a
single map output directory, whereas this depends on LOCAL_DIRS.
mapOutIndex should be set to subMapOutputFile.getOutputIndexFile()
{code}
2014-06-30 14:48:35,574 WARN [uber-SubtaskRunner]
org.apache.hadoop.mapred.LocalContainerLauncher: Exception running local
(uberized) 'child' : java.io.FileNotFoundException: File
/Users/gshegalov/workspace/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/target/org.apache.hadoop.mapreduce.v2.TestMRJobs/org.apache.hadoop.mapreduce.v2.
TestMRJobs-localDir-nm-2_3/usercache/gshegalov/appcache/application_1404164272885_0001/output/file.out.index
does not exist
at
org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:517)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:726)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:507)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:337)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:289)
at
org.apache.hadoop.fs.RawLocalFileSystem.rename(RawLocalFileSystem.java:334)
at org.apache.hadoop.fs.ChecksumFileSystem.rename(ChecksumFileSystem.java:504)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.renameMapOutputForReduce(LocalContainerLauncher.java:471)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runSubtask(LocalContainerLauncher.java:370)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runTask(LocalContainerLauncher.java:292)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.access$200(LocalContainerLauncher.java:178)
at
org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler$1.run(LocalContainerLauncher.java:221)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:695)
{code}
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