Could you tell me whether the query is slower if I two parameters both are
true?
2010/8/9 Namit Jain <nj...@facebook.com>
> That's right
>
> ________________________________________
> From: lei liu [liulei...@gmail.com]
> Sent: Sunday, August 08, 2010 7:18 PM
> To: hive-user@hadoop.apache.org
> Subject: Re: How to merge small files
>
> Thank you for your reply.
>
> Your mean is I will execute below statement:
>
> statement.execute("set hive.merge.mapfiles=true");
> statement.execute("set hive.merge.mapredfiles=true");
>
> The two parementers are both true, right?
>
> 2010/8/6 Namit Jain <nj...@facebook.com<mailto:nj...@facebook.com>>
> HIVEMERGEMAPFILES("hive.merge.mapfiles", true),
> HIVEMERGEMAPREDFILES("hive.merge.mapredfiles", false),
>
>
> Set the above parameters to true before your query.
>
>
>
> ________________________________________
> From: lei liu [liulei...@gmail.com<mailto:liulei...@gmail.com>]
> Sent: Thursday, August 05, 2010 8:47 PM
> To: hive-user@hadoop.apache.org<mailto:hive-user@hadoop.apache.org>
> Subject: How to merge small files
>
> When I run below sql: INSERT OVERWRITE TABLE tablename1 select_statement1
> FROM from_statement, there are many files which size is zero are stored to
> hadoop,
>
> How can I merge these small files?
>
> Thanks,
>
>
>
> LiuLei
>
>
>
