matches clause problem with chars that have special meaning in dk.brics - #, @
..
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Key: PIG-1770
URL: https://issues.apache.org/jira/browse/PIG-1770
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.0
Reporter: Thejas M Nair
Assignee: Thejas M Nair
Fix For: 0.8.0
When special chars #, @ , and the 'optional' patterns described here -
http://www.brics.dk/automaton/doc/dk/brics/automaton/RegExp.html#RegExp%28java.lang.String%29
are used , the regex match fails to work.
This is related to PIG-965.
Example and workaround are as follows -
{code}
grunt> cat t.txt
asd#asdf
zxcasdf
2#asdf
grunt> l = load 't.txt' as (a : chararray);
grunt> f = filter l by (a matches '.*#.*');
grunt> dump f;
-- No output, though two rows are expected.
--As a workaround, add a \ to escape the # . This regex is valid even in 0.7 ,
and it will be even after this bug is fixed (its valid java regex, which has
same meaning as above regex).
grunt> f = filter l by (a matches '.*\\#.*');
grunt> dump f;
asd#asdf
2#asdf
{code}
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