Bug in new logical plan results in no output for join
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Key: PIG-2535
URL: https://issues.apache.org/jira/browse/PIG-2535
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.1, 0.8.1, 0.10
Reporter: Vivek Padmanabhan
The below script is a snippet of a much larger script. The join in the script
results in 0 output for Pig 0.8,0.9 and 0.10 though there are matching records.
{code}
event_serve = LOAD 'input1' USING MyMapLoader() AS (s:map[], m:map[],
l:map[]);
raw = LOAD 'input2' USING MyMapLoader() AS (s:map[], m:map[], l:map[]);
SPLIT raw INTO
serve_raw IF (( (chararray) (s#'type') == '0') AND ( (chararray)
(s#'source') == '5')),
cm_click_raw IF (( (chararray) (s#'type') == '1') AND ( (chararray)
(s#'source') == '5'));
cm_serve = FOREACH serve_raw GENERATE s#'cm_serve_id' AS cm_event_guid,
s#'cm_serve_timestamp_ms' AS cm_receive_time, s#'p_url' AS ctx ;
cm_serve_lowercase = stream cm_serve through `tr [:upper:] [:lower:]`;
cm_serve_final = FOREACH cm_serve_lowercase GENERATE $0 AS cm_event_guid, $1
AS cm_receive_time, $2 AS ctx;
filtered = FILTER event_serve BY (chararray) (s#'filter_key') neq 'xxxx' AND
(chararray) (s#'filter_key') neq 'yyyy';
event_serve_project = FOREACH filtered GENERATE s#'event_guid' AS event_guid,
s#'receive_time' AS receive_time;
event_serve_join = join cm_serve_final by (cm_event_guid, cm_receive_time),
event_serve_project by (event_guid, receive_time) PARALLEL 800;
STORE event_serve_join INTO 'output' ;
{code}
The script produces correct results if I disable ColumnMapKeyPrune optimizer.
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