That's right
________________________________________
From: lei liu [[email protected]]
Sent: Sunday, August 08, 2010 7:18 PM
To: [email protected]
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 <[email protected]<mailto:[email protected]>>
HIVEMERGEMAPFILES("hive.merge.mapfiles", true),
HIVEMERGEMAPREDFILES("hive.merge.mapredfiles", false),
Set the above parameters to true before your query.
________________________________________
From: lei liu [[email protected]<mailto:[email protected]>]
Sent: Thursday, August 05, 2010 8:47 PM
To: [email protected]<mailto:[email protected]>
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
