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From "Xu Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-174) Pig hangs at progress 0% in this case
Date Fri, 28 Mar 2008 23:54:24 GMT
Pig hangs at progress 0% in this case
-------------------------------------

                 Key: PIG-174
                 URL: https://issues.apache.org/jira/browse/PIG-174
             Project: Pig
          Issue Type: Bug
            Reporter: Xu Zhang
            Assignee: Arun C Murthy


Pig appears to hang at progress 0% with the following console output:

{noformat}
2008-03-28 13:58:50,398 [main] INFO  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine
- Connecting to hadoop file system at: wilbur11.labs.corp.sp1.yahoo.com:8020
2008-03-28 13:58:51,342 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- ----- MapReduce Job -----
2008-03-28 13:58:51,343 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Input: [/user/pig/tests/data/singlefile/studenttab10k:org.apache.pig.builtin.PigStorage()]
2008-03-28 13:58:51,343 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Map: [[*]->org.apache.pig.impl.eval.StreamSpec@16fa474]
2008-03-28 13:58:51,343 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Group: null
2008-03-28 13:58:51,343 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Combine: null
2008-03-28 13:58:51,344 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Reduce: null
2008-03-28 13:58:51,344 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Output: results_7:org.apache.pig.builtin.PigStorage
2008-03-28 13:58:51,344 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Split: null
2008-03-28 13:58:51,344 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Map parallelism: -1
2008-03-28 13:58:51,344 [main] INFO  org.apache.pig.backend.hadoop.executionengine.POMapreduce
- Reduce parallelism: -1
2008-03-28 13:58:54,245 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapreduceExec.MapReduceLauncher
- Pig progress = 0%
{noformat}

The contents of the pig script used is as follows:

{code}
define X `./streamingscript/MySimpleStreamApp.pl` ship('./streamingscript/MySimpleStreamApp.pl');
A = load '/user/pig/tests/data/singlefile/studenttab10k';
B = stream A through X;
store B into 'results_7';
{code}

The streaming script "MySimpleStreamApp.pl" is as follows and it is located under the streamingscript
directory in my home directory.  I issued the pig command from my home directory.

{code}
#!/home/y/bin/perl

while (<>) {
    chomp;
    print "$_\n";
}
{code}

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