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https://issues.apache.org/jira/browse/PIG-184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585461#action_12585461
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Arun C Murthy commented on PIG-184:
-----------------------------------
This is a very interesting bug:
A = stream IP through `--upper`;
also exhibits this problem.
Looks like anything with "--" causes the parser to freeze up, maybe it needs a
LOOKAHEAD - I'll take a closer look in the morning.
> Parsing issue on the stream statement?
> --------------------------------------
>
> Key: PIG-184
> URL: https://issues.apache.org/jira/browse/PIG-184
> Project: Pig
> Issue Type: Bug
> Reporter: Xu Zhang
> Assignee: Arun C Murthy
>
> When I ran the following Pig script on the command line (pig -c cluster
> -latest p_11), Pig returns immediately without doing any processing. When I
> entered the script line by line into GRUNT, after I entered the second line,
> I had to type one extra ";" in addition to the original one in order for Pig
> to accept the line. In the end, Pig gave me the correct results.
> Here is the script, p_11:
> {code}
> A = load '/user/pig/tests/data/singlefile/studenttab10k';
> B = stream A through `python ./python/MySimpleStreamApp.py --upper` as (name,
> age, gpa);
> store B into 'results_11';
> {code}
> Here is the python streaming script, MySimpleStreamApp.py:
> {code}
> #!/usr/bin/python
> import sys
> import optparse
> def main():
> p = optparse.OptionParser()
> p.add_option('--upper', '-u', action="store_true")
> options, arguments = p.parse_args()
> line = sys.stdin.readline()
> while line:
> if options.upper == True:
> line = line.upper()
> sys.stdout.write(line)
> line = sys.stdin.readline()
> if __name__ == '__main__':
> main()
> {code}
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