[ https://issues.apache.org/jira/browse/HIVE-896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13563617#comment-13563617 ]
Harish Butani commented on HIVE-896: ------------------------------------ No this needs addressing. Currently the Definition classes ( same as Desc classes) are holding onto the Spec classes which have the ASTNodes. Most cases it is easy to make the Spec reference transient (or better yet move the association outside of the Def classes). There are couple of places that the ASTNode is being referenced; need to take a closer look. I am in process of refactoring the Spec classes; will have better sense in a couple of days. > Add LEAD/LAG/FIRST/LAST analytical windowing functions to Hive. > --------------------------------------------------------------- > > Key: HIVE-896 > URL: https://issues.apache.org/jira/browse/HIVE-896 > Project: Hive > Issue Type: New Feature > Components: OLAP, UDF > Reporter: Amr Awadallah > Priority: Minor > Attachments: DataStructs.pdf, HIVE-896.1.patch.txt, > Hive-896.2.patch.txt > > > Windowing functions are very useful for click stream processing and similar > time-series/sliding-window analytics. > More details at: > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1006709 > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1007059 > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1007032 > -- amr -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira