No, this is a really really bad idea and C* was not designed for this, in fact,
it was designed so you don't need to have a large expensive SAN.
Don't be tempted by the shiny expensive SAN. :)
If money is no object instead throw SSD's in your nodes and run 10G between
racks
From: Kanwar
would be the drawbacks :)
From: Michael Kjellman [mailto:mkjell...@barracuda.com]
Sent: 21 February 2013 17:12
To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
Subject: Re: Cassandra with SAN
No, this is a really really bad idea and C* was not designed for this, in fact
Yes, this is a thrift error returned by C*. You can use Data::Dumper to grab
what's in that hash ref to see if there are more clues. Throw your object in an
eval{} block and then print Dumper($@)
If you file a bug on github I can work with you there more so we don't bother
everyone on the
Couldn't you just disable thrift and leave gossip active?
On 2/22/13 9:01 AM, Hiller, Dean dean.hil...@nrel.gov wrote:
We would like to take a node out of the ring and upgradesstables while it
is not doing any writes nor reads with the ring. Is this possible?
I am thinking from the
Just to add though- compactionstats on an upgradesstables will only show the
currently running sstable being upgraded. Overall progress on a upgradesstables
isn't exposed anywhere yet but you can figure out how much there is to go thru
the log lines.
From: aaron morton
This was a bug with 1.2.0 but resolved in 1.2.1. Did you take a capture of
nodetool gossipinfo and nodetool ring by chance?
On Feb 23, 2013, at 12:26 AM, Arya Goudarzi gouda...@gmail.com wrote:
Hi C* users,
I just upgrade a 12 node test cluster from 1.1.6 to 1.2.1. What I noticed
from
How big will each mutation be roughly? 1MB, 5MB, 16MB?
On 2/25/13 3:32 PM, Chris Dean ctd...@sokitomi.com wrote:
I've been away from Cassandra for a while and wondered what the
consensus is on using 1.2.2 as a primary data store?
Our app has a typical OLTP workload but we have high availability
an issue with network in
your DC
Netflix actually has support for chunking binary blobs in Astyanax.
I'd say you'll be fine if you plan to have 1MB mutations and only 1-2TB of
total load across your cluster.
On 2/25/13 3:37 PM, Chris Dean ctd...@sokitomi.com wrote:
Michael Kjellman mkjell
Yes, it's required between majors. Which your upgrade would be.
On 2/27/13 10:54 AM, Hiller, Dean dean.hil...@nrel.gov wrote:
My script to upgrade our first node in QA is thus (basically, snapshot,
drain, stop, then switch over then start)Š
#!/bin/bash
export NODE=$1
export VERSION=1.1.4
before I rejoin the
ring?
Quote from Aaron...
In pre 1.2 add these jvm startup params
-Dcassandra.join_ring=false
-Dcassandra.start_rpc=false
Thanks,
Dean
On 2/27/13 12:00 PM, Michael Kjellman mkjell...@barracuda.com wrote:
Yes, it's required between majors. Which your upgrade
There is no overall repair progress currently.
You can use some awk/grep hackery to try and figure it out from the logs. (This
works best for a cleanup, less so for a repair because ranges are skipped and
merkel trees take a long time to compare/generate/validate)
Remember, things might be
this.
https://github.com/apache/cassandra/blob/trunk/CHANGES.txt
https://issues.apache.org/jira/browse/CASSANDRA-4767
Alain
2013/2/28 Michael Kjellman
mkjell...@barracuda.commailto:mkjell...@barracuda.com
There is no overall repair progress currently.
You can use some awk/grep
Is your goal to rebuild a cf from scratch?
On Feb 28, 2013, at 11:24 AM, Hiller, Dean dean.hil...@nrel.gov wrote:
Title says it all. Anyone know?
Thanks,
Dean
Copy, by Barracuda, helps you store, protect, and share all your amazing
things. Start today: www.copy.com.
No. I've actually found performance is better. Sounds like a timeout somewhere.
On Mar 1, 2013, at 10:18 AM, Hiller, Dean dean.hil...@nrel.gov wrote:
I setup a QA system copying our production system which was accidentally
SimpleSnitch I found out but we are only in one datacenter right now
When is the last time you did a cleanup on the cf?
On Mar 2, 2013, at 9:48 AM, Víctor Hugo Oliveira Molinar
vhmoli...@gmail.com wrote:
Hello guys.
I'm investigating the reasons of performance degradation for my case scenario
which follows:
- I do have a column family which is filled of
are started(when are only few deleted
columns), the performance looks pretty well.
Unfortunately it is degraded along the day.
On Sat, Mar 2, 2013 at 2:54 PM, Michael Kjellman
mkjell...@barracuda.commailto:mkjell...@barracuda.com wrote:
When is the last time you did a cleanup on the cf?
On Mar 2
lower the min_compaction_threshold for this
column family. Right?
What does realy mean this threeshold value?
Guys, thanks for the help so far.
On Sat, Mar 2, 2013 at 3:42 PM, Michael Kjellman
mkjell...@barracuda.commailto:mkjell...@barracuda.com wrote:
What is your gc_grace set to? Sounds like
Dean,
I think if you look back through previous mailing list items you'll find
answers to this already but to summarize:
Tables created prior to 1.2 will continue to work after upgrade. New
tables created are not exposed by the Thrift API. It is up to client
developers to upgrade the client to
The best way would be to chunk your binary blobs into 1/2MB chunks.
You could store
Key (md5 of entire blob) = part1, part2, part3 etc
BytesType Validation
Then if you want the entire image just grab the key (md5)..obviously you'll
need a index somewhere with a filename = md5
Best,
Michael
Repair is slow.
On Mar 4, 2013, at 8:07 PM, Matt Kap matvey1...@gmail.com wrote:
I am looking to get a second opinion about disabling hinted-handoffs. I
have an application that can tolerate a fair amount of inconsistency
(advertising domain), and so I'm weighting the pros and cons of hinted
memory usage?
Thanks.
-Wei
Sent from my Samsung smartphone on ATT
Original message
Subject: Re: hinted handoff disabling trade-offs
From: Michael Kjellman mkjell...@barracuda.commailto:mkjell...@barracuda.com
To: user@cassandra.apache.orgmailto:user@cassandra.apache.org
user
Consistency is no longer query level but now session level in 1.2.0+.
Change the consistency first.
Then issue your select/update/insert query.
Cheers,
Michael
On May 29, 2013, at 7:06 AM, Chandana Tummala chandana.tumm...@wipro.com
wrote:
Hi Team,
I am using datastax cassandra
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