Koji Noguchi created PIG-2968:
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Summary: ColumnMapKeyPrune fails to prune a subtree inside foreach
Key: PIG-2968
URL: https://issues.apache.org/jira/browse/PIG-2968
Project: Pig
Issue Type: Bug
Reporter: Koji Noguchi
Assignee: Koji Noguchi
Priority: Minor
Sample code
{noformat}
$ cat test/foreach.pig
daily = load 'nyse' as (exchange, symbol);
grpd = group daily by exchange;
uniquecnt = foreach grpd {
sym = daily.symbol;
uniq_sym = distinct sym;
generate group, uniq_sym;
};
another = FOREACH uniquecnt GENERATE group;
explain another;
{noformat}
This breaks when it tries to prune uniq_sym->sym->innerload_daily
bq. 2012-10-12 14:54:11,031 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 2000: Error processing rule ColumnMapKeyPrune. Try -t ColumnMapKeyPrune
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