underline symbol is not supported in foreach block
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Key: PIG-2575
URL: https://issues.apache.org/jira/browse/PIG-2575
Project: Pig
Issue Type: Bug
Environment: HadoopVersion PigVersion
0.20.2-cdh3u2 0.9.1
Reporter: Shepherd Chu
Before I found the bug, I used script like this:
grunt> results_from_bizlog = foreach log_group_by_accountid {
region_modified_account = filter bizlog by optlevel ==3 and optcontent==2 and
oldvalue!=newvalue and oldvalue is not null; generate group,
((COUNT(region_modified_account) >0) ? 1:0); }
then pig reports error:
2012-03-08 12:24:15,148 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1200: Pig script failed to parse:
<line 45, column 205> Invalid scalar projection: region_modified_account : A
column needs to be projected from a relation for it to be used as a scalar
Details at logfile: /home/hadoop/pig-0.9.1/pig_1331107854401.log
After I changed the identifier "region_modified_account" to
"regionmodifiedaccount", no error was reported.
grunt> results_from_bizlog = foreach log_group_by_accountid {
regionmodifiedaccount = filter bizlog by optlevel ==3 and optcontent==2 and
oldvalue!=newvalue and oldvalue is not null; generate group,
((COUNT(regionmodifiedaccount) >0) ? 1:0); }
2012-03-08 12:27:45,796 [main] WARN org.apache.pig.PigServer - Encountered
Warning IMPLICIT_CAST_TO_LONG 9 time(s).
I think there must be some kind of bug of the underline symbol usage.
Am I right?
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