[jira] [Created] (PIG-4767) Partition filter not pushed down when filter clause references variable from another load path

["Anthony Hsu (JIRA)" <ji...@apache.org>]

Anthony Hsu created PIG-4767:
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             Summary: Partition filter not pushed down when filter clause references variable from another load path
                 Key: PIG-4767
                 URL: https://issues.apache.org/jira/browse/PIG-4767
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.15.0
            Reporter: Anthony Hsu


To reproduce:
{noformat:title=test.pig}
a = load 'a.txt';
a_group = group a all;
a_count = foreach a_group generate COUNT(a) as count;

b = load 'mytable' using org.apache.hcatalog.pig.HCatLoader();
b = filter b by datepartition == '2015-09-01-00' and foo == a_count.count;

dump b;
{noformat}
The above query ends up reading all the table partitions. If you remove the {{foo == a_count.count}} clause or replace {{a_count.count}} with a constant, then partition filtering happens properly.



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