[jira] [Resolved] (PIG-2535) Bug in new logical plan results in no output for join

["Daniel Dai (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-2535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai resolved PIG-2535.
-----------------------------

       Resolution: Fixed
    Fix Version/s: 0.11
                   0.9.3
                   0.10
         Assignee: Daniel Dai
     Hadoop Flags: Reviewed

Unit test pass. test-patch:
     [exec] -1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec] 
     [exec]     -1 javadoc.  The javadoc tool appears to have generated 1 warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     -1 release audit.  The applied patch generated 533 release audit warnings (more than the trunk's current 530 warnings).

javadoc and release audit warning is unrelated.

Patch committed to 0.9/0.10/trunk.
                
> Bug in new logical plan results in no output for join
> -----------------------------------------------------
>
>                 Key: PIG-2535
>                 URL: https://issues.apache.org/jira/browse/PIG-2535
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.8.1, 0.9.1, 0.10
>            Reporter: Vivek Padmanabhan
>            Assignee: Daniel Dai
>             Fix For: 0.10, 0.9.3, 0.11
>
>         Attachments: PIG-2535-0.patch, PIG-2535-1.patch, PIG-2535-2.patch
>
>
> 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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