Re: Hackathon?!?

2010-03-27 Thread Evan Weaver
Me too. On Tue, Mar 23, 2010 at 12:48 PM, Jeff Hodges wrote: > I'll be there. > -- > Jeff > > On Mon, Mar 22, 2010 at 8:40 PM, Eric Florenzano wrote: >> Nice, I'll go! >> >> -Eric Florenzano > -- Evan Weaver

Re: Does Cassandra has size limitation on value ?

2010-03-27 Thread Jonathan Ellis
The maximum is the thrift-imposed "whatever you can fit in memory, or 2GB, whichever is smaller." In practice you probably don't want to exceed 64MB or so, depending on your concurrency requirements. On Fri, Mar 26, 2010 at 8:35 PM, Jeff Zhang wrote: > Hi all, > > I'd like to use Cassandra to st

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Eric Yu
I have not restart my nodes. OK, may be I should give 0.6 a try. On Sun, Mar 28, 2010 at 9:53 AM, Jonathan Ellis wrote: > It means that a MessagingService socket closed unexpectedly. If > you're starting and restarting nodes that could cause it. > > This code is obsolete in 0.6 anyway. > > On S

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Jonathan Ellis
It means that a MessagingService socket closed unexpectedly. If you're starting and restarting nodes that could cause it. This code is obsolete in 0.6 anyway. On Sat, Mar 27, 2010 at 8:51 PM, Eric Yu wrote: > And one more clue here, when ReplicateFactor is 1, it's OK, after changed to > 2, the

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Eric Yu
And one more clue here, when ReplicateFactor is 1, it's OK, after changed to 2, the exception occurred. On Sun, Mar 28, 2010 at 9:46 AM, Eric Yu wrote: > Hi Jonathan, > > I upgraded my jdk to latest version, and I am sure I start Cassandra with > it (set JAVA_HOME in cassansra.in.sh). > But the

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Eric Yu
Hi Jonathan, I upgraded my jdk to latest version, and I am sure I start Cassandra with it (set JAVA_HOME in cassansra.in.sh). But the exception still there, any idea? On Sun, Mar 28, 2010 at 12:02 AM, Jonathan Ellis wrote: > This means you need to upgrade your jdk to build 18 or later > > On Sa

Re: FW: Re: Is ReplicationFactor (eventually) guar anteed?

2010-03-27 Thread Stu Hood
Could you try running your experiment again with DEBUG logging enabled, and then attaching the logs to a JIRA? -Original Message- From: "Jianing Hu" Sent: Saturday, March 27, 2010 12:07pm To: user@cassandra.apache.org Subject: Re: FW: Re: Is ReplicationFactor (eventually) guaranteed? He

Re: Nodes Timing Out

2010-03-27 Thread Chris Goffinet
what's the ulimit set to? -Chris On Mar 27, 2010, at 10:29 AM, James Golick wrote: > Hey, > > I put our first cluster in to production (writing but not reading) a couple > of days ago. Right now, it's got two pretty sizeable nodes taking about 200 > writes per second each and virtually no rea

Re: Nodes Timing Out

2010-03-27 Thread James Golick
Nothing in the log. No CPU activity. I'll try to strace it and connect with jconsole next time it happens. On Sat, Mar 27, 2010 at 11:09 AM, Jonathan Ellis wrote: > anything interesting in the log? > > is there cpu activity? > > can you connect w/ jconsole? > > On Sat, Mar 27, 2010 at 12:29 PM,

Re: Nodes Timing Out

2010-03-27 Thread Jonathan Ellis
anything interesting in the log? is there cpu activity? can you connect w/ jconsole? On Sat, Mar 27, 2010 at 12:29 PM, James Golick wrote: > Hey, > I put our first cluster in to production (writing but not reading) a couple > of days ago. Right now, it's got two pretty sizeable nodes taking abo

Nodes Timing Out

2010-03-27 Thread James Golick
Hey, I put our first cluster in to production (writing but not reading) a couple of days ago. Right now, it's got two pretty sizeable nodes taking about 200 writes per second each and virtually no reads. Eventually, though, (and this has happened twice), both nodes seem to start timing out. If I

Re: FW: Re: Is ReplicationFactor (eventually) guaranteed?

2010-03-27 Thread Jianing Hu
Here's the conf file, with comments removed. Thanks a lot for your help. dev false 0.01 org.apache.cassandra.dht.OrderPreservingPartitioner foo3 org.apache.cassandra.locator.EndPointSnitch org.apache.cassandra.locator.RackUnawareS

Re: What is the limitation of row_count in get_range_slice ?

2010-03-27 Thread Jesse McConnell
the limitation is entirely based on the hardware your using and the volume of data you are getting back (imo at least) since your basically restricted by the amount of data you can query and return within your rpc timeout.. if your name/value's are large then you'll be able to query fewer then if

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Eric Yu
Jonathan, thanks for your quick reply. I'll have a try now. On Sun, Mar 28, 2010 at 12:02 AM, Jonathan Ellis wrote: > This means you need to upgrade your jdk to build 18 or later > > On Sat, Mar 27, 2010 at 10:55 AM, Eric Yu wrote: > > Hi, list > > I got this exception when insert into a cluste

Re: 0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Jonathan Ellis
This means you need to upgrade your jdk to build 18 or later On Sat, Mar 27, 2010 at 10:55 AM, Eric Yu wrote: > Hi, list > I got this exception when insert into a cluster with 5 node, is this a bug > or something else is wrong. > > here is the system log: > >  INFO [GMFD:1] 2010-03-27 23:15:16,14

0.5.1 exception: java.io.IOException: Reached an EOL or something bizzare occured

2010-03-27 Thread Eric Yu
Hi, list I got this exception when insert into a cluster with 5 node, is this a bug or something else is wrong. here is the system log: INFO [GMFD:1] 2010-03-27 23:15:16,145 Gossiper.java (line 543) InetAddress /172.19.15.210 is now UP ERROR [Timer-1] 2010-03-27 23:23:27,739 TcpConnection.java (

Re: Ring management and load balance

2010-03-27 Thread Roland Hänel
Mike, If you have the assumption that your rows are roughly equal in size (at least statistcally), then you could also just take a node's total load (this is exposed via Jmx) and divide by the amount of keys/rows on that node. Not sure how to get the latter, but shouldn't be such a big deal to int

What is the limitation of row_count in get_range_slice ?

2010-03-27 Thread Jeff Zhang
Hi all, When I invoke the api get_range_slice and set the argument row_count as Integer.Max, it will throw exception. But if I set it as a small int number, everything is fine. So what is the limitation of this argument, what is the biggest number of records I can get at one time ? Thanks. --

Re: Ring management and load balance

2010-03-27 Thread Roland Hänel
Sorry for the last mail, hit the wrong button. This JMX property gives a per-CF granularity, right? I think it doesn't solve the problem completely here because the problem of key load-balancing effectively demands for a per-key granularity. But this could help statistical sampling. Roland 26.