Thanks Sanjay. I will look into this.
Also - one more question.
When I am trying to load log file to Hive and comparing the counts like this
select count(*) from <<Table>>
Versus
wc -l <<File>>
I see a few hundred records greater in <<Table>>. How should I debug it? Any
tips please.
________________________________
From: Sanjay Subramanian <sanjay.subraman...@wizecommerce.com>
To: "user@hive.apache.org" <user@hive.apache.org>; Raj Hadoop
<hadoop...@yahoo.com>
Sent: Saturday, July 6, 2013 4:32 AM
Subject: Re: Loading a flat file + one additional field to a Hive table
How about this ?
Assume you have a log file called
oompaloompa.log
TIMESTAMP=$(date +%Y_%m_%d_T%H_%M_%S);mv oompaloopa.log
oompaloopa.log.${TIMESTAMP};cat oompaloopa.log.${TIMESTAMP}| hdfs dfs -put -
/user/sasubramanian/oompaloopa.log.${TIMESTAMP}
This will directly put the file on HDFS and u can put it to the LOCATION
specified by your HIVE TABLE definition
sanjay
From: "manishbh...@rocketmail.com" <manishbh...@rocketmail.com>
Reply-To: "user@hive.apache.org" <user@hive.apache.org>
Date: Friday, July 5, 2013 10:39 AM
To: Raj Hadoop <hadoop...@yahoo.com>, Hive <user@hive.apache.org>
Subject: Re: Loading a flat file + one additional field to a Hive table
Raj,
You should dump the data in a temp table first and then move the data into
final table with select query.
Select date(), c1,c2..... From temp table.
Reason: we should avoid custom operation in load unless it is necessary.
Sent via Rocket from my HTC
----- Reply message -----
From: "Raj Hadoop" <hadoop...@yahoo.com>
To: "Hive" <user@hive.apache.org>
Subject: Loading a flat file + one additional field to a Hive table
Date: Fri, Jul 5, 2013 10:30 PM
Hi,
Can any one please suggest the best way to do the following in Hive?
Load 'todays date stamp' + << ALL FIELDS C1,C2,C3,C4 IN A FILE F1 >> to a Hive
table T1 ( D1,C1,C2,C3,C4)
Can the following command be modified in some way to acheive the above
hive > load data local inpath '/software/home/hadoop/dat_files/' into table
T1;
My requirement is to append a date stamp to a Web log file and then load it to
Hive table.
Thanks,
Raj
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