[jira] [Commented] (PIG-5167) Limit_4 is failing with spark exec type

["Nandor Kollar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-5167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15894719#comment-15894719 ] 

Nandor Kollar commented on PIG-5167:
------------------------------------

It seem that this fails, because we can't rely on the order of rows. As per Pig documentation (https://pig.apache.org/docs/r0.16.0/basic.html#limit):
"If the specified number of output tuples is less than the number of tuples in the relation, then n tuples are returned. There is no guarantee which n tuples will be returned, and the tuples that are returned can change from one run to the next. A particular set of tuples can be requested using the ORDER operator followed by LIMIT."

> Limit_4 is failing with spark exec type
> ---------------------------------------
>
>                 Key: PIG-5167
>                 URL: https://issues.apache.org/jira/browse/PIG-5167
>             Project: Pig
>          Issue Type: Sub-task
>          Components: spark
>            Reporter: Nandor Kollar
>             Fix For: spark-branch
>
>
> results are different:
> {code}
> diff <(head -n 5 Limit_4.out/out_sorted) <(head -n 5 Limit_4_benchmark.out/out_sorted)
> 1,5c1,5
> < 	50	3.00
> < 	74	2.22
> < alice carson	66	2.42
> < alice quirinius	71	0.03
> < alice van buren	28	2.50
> ---
> > bob allen		0.28
> > bob allen	22	0.92
> > bob allen	25	2.54
> > bob allen	26	2.35
> > bob allen	27	2.17
> {code}



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