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Posted to dev@hbase.apache.org by Andrzej <bo...@wp.pl> on 2017/10/05 08:56:22 UTC
writing to stdout slow down client
Test on my meager VirtualBox environment:
put 100'000 rows with 5 column per row : 20 to 21 seconds
but if I printf to stdout each 1000 row: 29 seconds
it is too big difference, alone printfs with screen scrolling give me
only <0.1 s.
Re: writing to stdout slow down client
Posted by Andrzej <bo...@wp.pl>.
W dniu 05.10.2017 o 10:56, Andrzej pisze:
> Test on my meager VirtualBox environment:
> put 100'000 rows with 5 column per row : 20 to 21 seconds
> but if I printf to stdout each 1000 row: 29 seconds
> it is too big difference, alone printfs with screen scrolling give me
> only <0.1 s.
Mean speed is 4.5 thousands rows per second. It is a lot compared to
MySQL, but version compiled on docker was significant faster.
Difference ABI - copy on write strings - HBase client uses and hacks old
ABI for increasing speed? It is possible increasing speed not distinct
to ABI?