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Date: Thu, 3 Apr 2008 05:46:24 -0700 (PDT)
From: "Pi Song (JIRA)" <jira@apache.org>
To: pig-dev@incubator.apache.org
Subject: [jira] Commented: (PIG-174) Pig hangs at progress 0% in this case
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    [ https://issues.apache.org/jira/browse/PIG-174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585085#action_12585085 ] 

Pi Song commented on PIG-174:
-----------------------------

+1 setupMapPipe is supposed to be in there since the beginning.

> 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
>            Priority: Minor
>         Attachments: PIG-174_0_20080402.patch
>
>
> 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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