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https://issues.apache.org/jira/browse/HIVE-13205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179413#comment-15179413
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Gopal V commented on HIVE-13205:
--------------------------------
If you are using Tez, can you run the query with a few million rows and post
the summary output (set hive.tez.exec.print.summary=true; to enable).
> Job with last_value() function keep running forever.
> ----------------------------------------------------
>
> Key: HIVE-13205
> URL: https://issues.apache.org/jira/browse/HIVE-13205
> Project: Hive
> Issue Type: Bug
> Reporter: Rahul
>
> Hi,
> I am running following query to fill all null with the last known value in
> the column:
> Select price,time, id,last_value(price,true) over (partition by id order by
> time) as LatestPrice from table;
> For few records, the query is running successfully. But for large number of
> records (2 Bn), the query keep running forever.
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