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https://issues.apache.org/jira/browse/HIVE-5460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13788211#comment-13788211
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Edward Capriolo commented on HIVE-5460:
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99% of the windowing merge violated our code conventions. I am slowly fixing
these issues as we find bugs and other tweeks in the code. You know next time
someone does a code pie chart about a release I want to have the most lines of
code :)
> invalid offsets in lag lead should return an exception (per ISO-SQL)
> ---------------------------------------------------------------------
>
> Key: HIVE-5460
> URL: https://issues.apache.org/jira/browse/HIVE-5460
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.11.0
> Reporter: N Campbell
> Assignee: Edward Capriolo
> Priority: Minor
> Attachments: HIVE-5460.1.patch.txt
>
>
> ISO-SQL 2011 defines how lag and lead should behave when invalid offsets are
> provided to the functions.
> i.e. select tint.rnum,tint.cint, lag( tint.cint, -100 ) over ( order by
> tint.rnum) from tint tint
> Instead of a meaningful error (as other vendors will emit) you get
> Error: Query returned non-zero code: 2, cause: FAILED: Execution Error,
> return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask
> SQLState: 08S01
> ErrorCode: 2
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