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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-2741) Python script throws an NameError: name 'Configuration' is not defined in case cache dir is not created
Date Thu, 07 Jun 2012 08:58:24 GMT

    [ https://issues.apache.org/jira/browse/PIG-2741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290891#comment-13290891
] 

Daniel Dai commented on PIG-2741:
---------------------------------

The test case only applicable to pig trunk. If we plan to commit to 0.10 branch, need make
a test case for both 0.10 and trunk.
                
> Python script throws an NameError: name 'Configuration' is not defined in case cache
dir is not created
> -------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-2741
>                 URL: https://issues.apache.org/jira/browse/PIG-2741
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.10.0
>         Environment: Pig 0.10
>            Reporter: Viraj Bhat
>         Attachments: pig-2741-no-test-yet-v1.patch.txt, pig-2741-testfailing-pig2665-v2.patch.txt,
pig-2741-testfailing-pig2665-v3.patch.txt
>
>
> I have a Python script which writes out data to HDFS
> {code}
> from org.apache.hadoop.conf import *
> from org.apache.hadoop.fs import *
> config = Configuration()
> hdfs = FileSystem.get(config)
> out = hdfs.create(Path("/user/viraj/junk.txt"))
> out.write("Hello World!")
> {code}
> When I run this I get the following error:
> {quote}
> 2012-06-06 01:20:43,101 [main] INFO  org.apache.pig.Main - Logging error messages to:
/home/viraj/pig_1338945643097.log
> 2012-06-06 01:20:43,502 [main] INFO  org.apache.pig.Main - Run embedded script: jython
> 2012-06-06 01:20:43,603 [main] INFO  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine
- Connecting to hadoop file system at: hdfs://namenode:8020
> 2012-06-06 01:20:44,069 [main] INFO  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine
- Connecting to map-reduce job tracker at: jobtracker:50300
> *sys-package-mgr*: can't create package cache dir, '/mydir/xx'
> 2012-06-06 01:20:45,815 [main] INFO  org.apache.pig.scripting.jython.JythonScriptEngine
- created tmp python.cachedir=/tmp/pig_jython_7126458276821733512
> 2012-06-06 01:20:45,904 [main] ERROR org.apache.pig.Main - ERROR 1121: Python Error.
Traceback (most recent call last):
>   File "/homes/viraj/test.py", line 4, in <module>
>     config = Configuration()
> NameError: name 'Configuration' is not defined
> {quote}
> I tried to solve it in various ways:
> 1) Override pig.properties to specify python.cachedir.skip=false but it does not seem
to work
> 2) The only workaround is to: specify: -Dpython.cachedir=/mydirectory/tmp on the command
line
> Viraj

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