Re: How do I upgrade a single cassandra node in production to 3 nodes cluster ?

2014-02-16 Thread Ertio Lew
I just mean increasing the cluster size not upgrading the cassandra version On Mon, Feb 17, 2014 at 2:29 AM, wrote: > By upgrade do you mean only adding nodes or also moving up the version of > C*? > > > On Mon, Feb 17, 2014 at 2:23 AM, Erick Ramirez wrote: > >> Ertio, >> >> It's not so much up

Re: Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Jacob Rhoden
Hi Guys, On 17 Feb 2014, at 3:13 pm, Thunder Stumpges wrote: > If you are looking for write throughput and running on a VM you could likely > have IO issues with your virtual disks.. Best practices are to put the write > ahead log on a separate disk from the data folder(s). Not sure if you have

Re: Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Thunder Stumpges
If you are looking for write throughput and running on a VM you could likely have IO issues with your virtual disks.. Best practices are to put the write ahead log on a separate disk from the data folder(s). Not sure if you have done this or what physical setup you have under the VM but I would

Re: Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Erick Ramirez
Jacob, You are right in that increasing the timeout to 20,000ms (20 seconds) is a real concern as it just hides an underlying issue with your environment. Without additional information, I was suspecting that this could be due to the environment not being optimised. These write timeouts can occur

Re: Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Jacob Rhoden
Hi Erick, On 17 Feb 2014, at 1:19 pm, Erick Ramirez wrote: > Are you able to post log snippets around the time that the timeouts occur? > > I have a suspicion you may be running out of heap memory and might need to > tune your environment. The INFO entries in the log should indicate this. Im k

Re: Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Erick Ramirez
Jacob, Are you able to post log snippets around the time that the timeouts occur? I have a suspicion you may be running out of heap memory and might need to tune your environment. The INFO entries in the log should indicate this. Cheers, Erick

Where to I start to get to the bottom of this WriteTimeout issue?

2014-02-16 Thread Jacob Rhoden
Hi Guys, While doing a bulk load of data, incrementing counters based on log data, I am encountering a timeout exception. Im using the Datastax 2.0-rc2 java driver. The driver is set up with both nodes as contact points. The keyspace is setup with replication factor = 2. Is this an issue with

Re: How do I upgrade a single cassandra node in production to 3 nodes cluster ?

2014-02-16 Thread spawgi
By upgrade do you mean only adding nodes or also moving up the version of C*? On Mon, Feb 17, 2014 at 2:23 AM, Erick Ramirez wrote: > Ertio, > > It's not so much upgrading, but simply adding more nodes to your existing > setup. > > Cheers, > Erick > > > On Sun, Feb 16, 2014 at 2:13 PM, Ertio Le

Re: How do I upgrade a single cassandra node in production to 3 nodes cluster ?

2014-02-16 Thread Erick Ramirez
Ertio, It's not so much upgrading, but simply adding more nodes to your existing setup. Cheers, Erick On Sun, Feb 16, 2014 at 2:13 PM, Ertio Lew wrote: > I started off with a single cassandra node on my 2GB digital ocean VPS, > but now I'm planning to upgrade it to 3 node cluster. My single n