hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Tatsuya Kawano <tatsuy...@snowcocoa.info>
Subject Re: YCSB - Yahoo Cloud Serving Benchmark - now available for download
Date Fri, 23 Apr 2010 23:41:23 GMT
Hi Brian and the team,

Thanks for making the tools available for us. I just noticed a glitch
in HBaseClient.java; HTable is set to non auto-flush mode, but there
is no place that calls flushCommits() explicitly to push the
uncommitted changes to HBase. When I run -load command with one
million records to insert, I'll only get something like 998,582 loaded
on the table.

This code fragment should fix the problem:

    public void cleanup() throws DBException {
		try {
			if (_hTable != null) {
		} catch (IOException e) {
			throw new DBException(e);


Tatsuya Kawano (Mr.)
Tokyo, Japan

2010/4/24 Brian Frank Cooper <cooperb@yahoo-inc.com>:
> Yahoo! Research is pleased to announce the release of the Yahoo! Cloud
> Serving Benchmark, YCSB v. 0.1.0, as an open source package. YCSB is a
> common benchmarking framework for cloud database, storage and serving
> systems. Results for benchmarking HBase, Cassandra, PNUTS and MySQL will be
> presented at the upcoming ACM Symposium on Cloud Computing on June 11. The
> toolkit is extensible to support benchmarking other systems, and defining
> new workloads.
> Source code and documentation is available at:
> http://wiki.github.com/brianfrankcooper/YCSB/

河野 達也
Tatsuya Kawano (Mr.)
Tokyo, Japan

twitter: http://twitter.com/tatsuya6502

View raw message