Bingbing Liu,
On Fri, Mar 12, 2010 at 1:36 PM, Bingbing Liu wrote:
> We did some test on on Cassandra, and the benchmark is from Section 7 of
> the BigTable paper “Bigtable: A Distributed Storage System for Structured
> Data”, the benchmark task includes: random write, random read, sequential
>
the difference between se and random the test code is just how the key of each
record is generated.
the test code is :
long totalSWriteTime = 0;
for (int i = 0; i < totalRows; i++) {
byte[] key = dg.getRandomRow();//when sequential write , we use i as the key
byte[] data = dg.generateValue();
why reads are slower than writes:
http://wiki.apache.org/cassandra/FAQ#reads_slower_writes
no idea on seq vs random. i would not be surprised if there is a bug
in your test code.
On Fri, Mar 12, 2010 at 12:36 AM, Bingbing Liu wrote:
> We did some test on on Cassandra, and the benchmark is from
We did some test on on Cassandra, and the benchmark is from Section 7 of the
BigTable paper Bigtable: A Distributed Storage System for Structured Data,
the benchmark task includes: random write, random read, sequential write, and
sequential read. The test results made us puzzled. We use a clus
This is a issue of Thrift, please refer to
https://issues.apache.org/jira/browse/THRIFT-602
when thrift server recive bogus input, it maybe using too many buffer space
for recive data. Seems it still not got fix.
-Santal
2010/3/11 Eric Yu
> try this if you use default cassandra.in.sh
> $ node
try this if you use default cassandra.in.sh
$ nodeprobe --host cass01 --port 8080
On Thu, Mar 11, 2010 at 3:20 PM, shirish wrote:
> Hello,
>
> I managed to run two nodes on machines with IP address 192.168.0.6(cass01)
> and 192.168.0.17(cass02). After a while when i did *nodeprobe --host cass01
> I managed to run two nodes on machines with IP address 192.168.0.6(cass01)
> and 192.168.0.17(cass02). After a while when i did *nodeprobe --host cass01
> --port 9160 I get this messages on cass01 *
[snip]
> java.lang.OutOfMemoryError: Java heap space
> at
> org.apache.thrift.protocol.TBina
