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https://issues.apache.org/jira/browse/HIVE-4130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13631911#comment-13631911
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Phabricator commented on HIVE-4130:
-----------------------------------

ashutoshc has requested changes to the revision "HIVE-4130 [jira] Bring the 
Lead/Lag UDFs interface in line with Lead/Lag UDAFs".

  Mostly looks good. Some comments.

INLINE COMMENTS
  ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFLeadLag.java:60 
This catch block is no longer required I think. Now that we ascertain 
arguments.length > 1 there cant be NPE here.
  ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFLeadLag.java:66 
Bit confused here. In case of this exception, isnt it better to just throw 
exception, instead of setting amt to max. What do you think?
  ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFLeadLag.java:113 
This can be removed. We have same code down below.

REVISION DETAIL
  https://reviews.facebook.net/D10233

BRANCH
  HIVE-4130

ARCANIST PROJECT
  hive

To: JIRA, ashutoshc, hbutani

                
> Bring the Lead/Lag UDFs interface in line with Lead/Lag UDAFs
> -------------------------------------------------------------
>
>                 Key: HIVE-4130
>                 URL: https://issues.apache.org/jira/browse/HIVE-4130
>             Project: Hive
>          Issue Type: Bug
>          Components: PTF-Windowing
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>         Attachments: HIVE-4130.D10233.1.patch
>
>
> - support a default value arg
> - both amt and defaultValue args can be optional

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