I am getting this error with a mostly out of the box configuration from
version 0.20.203.0
Where should I look for a potential issue. Most of the configuration is out of the box. I was able to visit the local websites for hdfs, task manager.
I am guessing the error is related to a permissions issue on cygwin and windows. Also, googling the problem, they say there might be some kind of out of memory issue. It is such a simple example, I don't see how that could be.
When I try to run the wordcount examples.
$ hadoop jar hadoop-examples-0.20.203.0.jar wordcount /user/hduser/gutenberg /user/hduser/gutenberg-output6
I get this error:
2011-08-12 15:45:38,299 WARN org.apache.hadoop.mapred.TaskRunner:
attempt_201108121544_0001_m_000008_2 : Child Error
java.io.IOException: Task process exit with nonzero status of 127.
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258)
2011-08-12 15:45:38,878 WARN org.apache.hadoop.mapred.TaskLog: Failed to
retrieve stdout log for task: attempt_201108121544_0001_m_000008_1
java.io.FileNotFoundException:
E:\projects\workspace_mar11\ParseLogCriticalErrors\lib\h\logs\userlogs\j
ob_201108121544_0001\attempt_201108121544_0001_m_000008_1\log.index (The
system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at
org.apache.hadoop.io.SecureIOUtils.openForRead(SecureIOUtils.java:102)
at
org.apache.hadoop.mapred.TaskLog.getAllLogsFileDetails(TaskLog.java:112)
...
The userlogs/job* directory is empty. Maybe there is some permission
issue with those directories.
I am running on windows with cygwin so I don't really know permissions
to set.
Copyright Notice：Content Author:「Berlin Brown」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/7047945/hadoop-basic-examples-wordcount