hdfs - Hadoop java.io.IOException: Mkdirs failed to create /some/path

Question

When I try to run my Job I am getting the following exception:

Exception in thread "main" java.io.IOException: Mkdirs failed to create /some/path
    at org.apache.hadoop.util.RunJar.ensureDirectory(RunJar.java:106)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:150)

Where the /some/path is hadoop.tmp.dir. However when I issue the dfs -ls cmd on /some/path I can see that it exists and the dataset file is present (was copied before lunching the job). Also the path is correctly defined in hadoop configs. Any suggestions will be appreciated. I am using hadoop 0.21.

Answer 1

Just ran into this problem running mahout from CDH4 in standalone mode in my MacBook Air.

The issue is that a /tmp/hadoop-xxx/xxx/LICENSE file and a /tmp/hadoop-xxx/xxx/license directory are being created on a case-insensitive file system when unjarring the mahout jobs.

I was able to workaround this by deleting META-INF/LICENSE from the jar file like this:

zip -d mahout-examples-0.6-cdh4.0.0-job.jar META-INF/LICENSE

and then verified it with

jar tvf mahout-examples-0.6-cdh4.0.0-job.jar | grep -i license

Hope this helps!