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From Akshay Ballarpure <akshay.ballarp...@tcs.com>
Subject CSV Import is taking huge time
Date Wed, 23 Jul 2014 09:00:09 GMT
Hello,
I am trying copy command in Cassandra to import CSV file in to DB, Import 
is taking huge time, any suggestion to improve it? 

id,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z
100,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26
101,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26
----
--
--

there are ~ 50 K lines in this file , size is ~ 5 MB.
 
I have created table as per below:

create table csldata4 ( id int PRIMARY KEY,a int , b int, c int, d int, e 
int, f int,
                        g int, h int,i int, j int, k int, l int,m int, n 
int, o int, p int, q                                    int, r int, s int, 
t int, u int, v int, w int, x int, y int , z int);
Copy Command:

COPY csldata4 (id , a , b , c , d , e , f , g , h , i , j , k , l , m , n 
, o , p , q , r , s , t , u , v , w , x , y , z ) FROM 'csldata1.csv' WITH 
HEADER=TRUE;
 
Issue here is it's taking huge time to import

cqlsh:mykeyspace> COPY csldata (id , a , b , c , d , e , f , g , h , i , j 
, k , l , m , n , o , p , q , r , s , t , u , v , w , x , y , z ) FROM 
'csldata1.csv' WITH HEADER=TRUE;
66215 rows imported in 1 minute and 31.044 seconds.


Thanks & Regards
Akshay Ghanshyam Ballarpure
Tata Consultancy Services
Cell:- 9985084075
Mailto: akshay.ballarpure@tcs.com
Website: http://www.tcs.com
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