[
https://issues.apache.org/jira/browse/HBASE-1249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12704390#action_12704390
]
Erik Holstad commented on HBASE-1249:
-------------------------------------
Just for the people that are still a little bit sceptic that an algorithmic
change can make a great improvement in speed, you can just test this simple
timing test for different m and n and have a look at what the result is.
public void timingTester(){
long start = 0L;
long stop = 0L;
int m = 100;
int n = 100;
int size = m*n;
int ret = 0;
//old
start = System.nanoTime();
for(int i=0; i<size; i++){
ret = (2*i) -i; //or do something else
}
stop = System.nanoTime();
System.out.println("old timer " +(stop-start));
//new
size = m+n;
start = System.nanoTime();
for(int i=0; i<size; i++){
ret = (2*i) -i;
}
stop = System.nanoTime();
System.out.println("new timer " +(stop-start));
}
> Rearchitecting of server, client, API, key format, etc for 0.20
> ---------------------------------------------------------------
>
> Key: HBASE-1249
> URL: https://issues.apache.org/jira/browse/HBASE-1249
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: Jonathan Gray
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: HBASE-1249-Example-v1.pdf, HBASE-1249-Example-v2.pdf,
> HBASE-1249-GetQuery-v1.pdf, HBASE-1249-GetQuery-v2.pdf,
> HBASE-1249-GetQuery-v3.pdf, HBASE-1249-GetQuery-v4.pdf,
> HBASE-1249-StoreFile-v1.pdf, HBASE-1249-StoreFile-v4.pdf
>
>
> To discuss all the new and potential issues coming out of the change in key
> format (HBASE-1234): zero-copy reads, client binary protocol, update of API
> (HBASE-880), server optimizations, etc...
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
