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https://issues.apache.org/jira/browse/HIVE-7400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14061672#comment-14061672
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Gopal V commented on HIVE-7400:
-------------------------------
[~darranl]: I am using hive-14 which is the only branch in development at the
moment.
And Tez is the new faster execution engine for Hive on Hadoop-2 clusters -
http://www.slideshare.net/t3rmin4t0r/hivetez-a-performance-deep-dive/3
> count and count distinct not correct
> ------------------------------------
>
> Key: HIVE-7400
> URL: https://issues.apache.org/jira/browse/HIVE-7400
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.11.0
> Reporter: Danran Lai
> Attachments: data_150000
>
>
> I have a table in Hive and I want to count unique records and all records.
> Table looks like:
> {quote}
> sid string
> sender string
> domain string
> product string
> {quote}
> And my query like this:
> {quote}
> select domain,product,count(1) as num,count(distinct sender) as user_num
> from table
> group by domain,product
> {quote}
> But the results are not correct. I can get the right user_num, but the num is
> wrong which is less than the real num. The real num is about 30 millon but I
> can only get 9 millon.
> So how can I fix this so that I get the correct result?
> ==================Updated==========================
> Dataset is uploaded. Row format delimited fields terminated by '\t'. This
> dataset has 150,000 rows. With this query, I got the result as followed:
> bq.domain1 product1 36424 36424
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