Pig generating infinite map outputs
-----------------------------------
Key: PIG-2534
URL: https://issues.apache.org/jira/browse/PIG-2534
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.1
Reporter: Vivek Padmanabhan
I am getting a strange behavior by Pig in the below script for Pig 0.9.
{code}
event_serve = LOAD 'input1' AS (s, m, l);
cm_data_raw = LOAD 'input2' AS (s, m, l);
SPLIT cm_data_raw INTO
cm_serve_raw IF (( (chararray) (s#'key1') == '0') AND ( (chararray)
(s#'key2') == '5')),
cm_click_raw IF (( (chararray) (s#'key1') == '1') AND ( (chararray)
(s#'key2') == '5'));
cm_serve = FOREACH cm_serve_raw GENERATE s#'key3' AS f1, s#'key4' AS f2,
s#'key5' AS f3 ;
cm_serve_lowercase = stream cm_serve through `echo val3`;
cm_serve_final = FOREACH cm_serve_lowercase GENERATE $0 AS cm_event_guid, $1
AS cm_receive_time, $2 AS cm_ctx_url;
event_serve_filtered = FILTER event_serve BY (chararray) (s#'key1') neq 'xxx'
AND (chararray) (s#'key2') neq 'yyy' ;
event_serve_project = FOREACH event_serve_filtered GENERATE s#'key3' AS
event_guid, s#'key4' AS receive_time;
event_serve_join = join cm_serve_final by (cm_event_guid),
event_serve_project by (event_guid);
store event_serve_join into 'somewhere';
{code}
Input (both input1 and input2 is same)
---
[key1#0,key2#5,key3#val3,key4#val4,key5#val5]
If i run this pig script with ColumnMapKeyPrune disabled, the job goes through
fine and 1 output is created.
But if I run this script by default, then it keeps on generating map output
records infinitely.
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