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On Apr 20, 2015, at 8:08 AM, Carlos Rolo r...@pythian.com wrote:
Independent of the snitch, data needs to travel to the new nodes (plus all
the keyspace information that goes via gossip). So I won't bootstrap them all
at once, even if it is only for network traffic generated.
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On Apr 18, 2015, at 4:26 PM, Bill Miller bmil...@inthinc.com wrote:
I tried restarting two nodes that were working and now I get this.
INFO 15:13:50,296 Initializing system.range_xfers
INFO 15:13:50,300 Initializing system.schema_keyspaces
INFO 15:13:50,301 Opening
I typically use a # a lot lower than 256, usually less than 20 for num_tokens
as a larger number has historically had a dramatic impact on query performance.
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Colin Clark
co...@clark.ws
+1 612-859-6129
skype colin.p.clark
On Mar 28, 2015, at 3:46 PM, Eric Stevens migh...@gmail.com wrote
is usually
considered a bad idea and is simply not even permitted by most RDBMS.
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Colin Clark
co...@clark.ws
+1 320-221-9531
skype colin.p.clark
On Feb 8, 2015, at 4:16 PM, Eric Stevens migh...@gmail.com wrote:
It sounds like changing user names is the kind of thing which doesn't happen
often
Triggering a major compaction is usually not a good idea.
If you've got ssd's, go leveled as DuyHai says. The results will be tasty.
--
Colin
320-221-9531
On Jul 24, 2014, at 5:28 PM, Kevin Burton bur...@spinn3r.com wrote:
This was after a bootstrap… so I triggered a major compaction.
It's an anti-pattern and there are better ways to do this.
I have implemented the paging algorithm you've described using wide rows
and bucketing. This approach is a more efficient utilization of
Cassandra's built in wholesome goodness.
Also, I wouldn't let any number of clients (huge) connect
No, you're not-the partition key will get distributed across the cluster if
you're using random or murmur. You could also ensure that by adding
another column, like source to ensure distribution. (Add the seconds to the
partition key, not the clustering columns)
I can almost guarantee that if
wrote:
Thanks for the feedback on this btw.. .it's helpful. My notes below.
On Sat, Jun 7, 2014 at 5:14 PM, Colin Clark co...@clark.ws wrote:
No, you're not-the partition key will get distributed across the cluster
if you're using random or murmur.
Yes… I'm aware. But in practice
:
What's 'source' ? You mean like the URL?
If source too random it's going to yield too many buckets.
Ingestion rates are fairly high but not insane. About 4M inserts per
hour.. from 5-10GB…
On Sat, Jun 7, 2014 at 7:13 PM, Colin Clark co...@clark.ws wrote:
Not if you add another column
Burton bur...@spinn3r.com wrote:
What's 'source' ? You mean like the URL?
If source too random it's going to yield too many buckets.
Ingestion rates are fairly high but not insane. About 4M inserts per
hour.. from 5-10GB…
On Sat, Jun 7, 2014 at 7:13 PM, Colin Clark co...@clark.ws wrote
, Jun 7, 2014 at 7:38 PM, Colin Clark co...@clark.ws wrote:
With 100 nodes, that ingestion rate is actually quite low and I don't
think you'd need another column in the partition key.
You seem to be set in your current direction. Let us know how it works
out.
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Colin
320-221-9531
Is your version of Hector using native protocol or thrift?
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Colin
+1 320 221 9531
On Mon, Jun 2, 2014 at 6:41 AM, Peter Lin wool...@gmail.com wrote:
I'm happy to announce Concord has decided to open source our port of
Hector to .Net.
The project is hosted on google code
, 2014 at 8:08 AM, Colin Clark co...@clark.ws wrote:
Is your version of Hector using native protocol or thrift?
--
Colin
+1 320 221 9531
On Mon, Jun 2, 2014 at 6:41 AM, Peter Lin wool...@gmail.com wrote:
I'm happy to announce Concord has decided to open source our port of
Hector to .Net
in DataStax's git?
If it's going to be the standard protocol, then it really should be in
apache's repo. That's my bias opinion.
On Mon, Jun 2, 2014 at 8:16 AM, Colin Clark co...@clark.ws wrote:
Unless a cassandra driver is using the native protocol, it's going to
have a very short life
Try this:
nodetool decomission host-id-of-node-to-decomission
UN means UP, NORMAL
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Colin
+1 320 221 9531
On Sun, May 25, 2014 at 9:09 AM, Tim Dunphy bluethu...@gmail.com wrote:
Also for information that may help diagnose this issue I am running
cassandra 2.0.7
I am also using these
You probably generated the wrong token type. Look for a murmur token
generator on the Datastax site.
--
Colin
320-221-9531
On May 17, 2014, at 7:00 PM, Tim Dunphy bluethu...@gmail.com wrote:
Hi and thanks for your response.
The puzzling thing is that yes I am using the murmur partition, yet
Looks like you may have put the token next to num-tokens property in the
yaml file for one node. I would double check the yaml's to make sure the
tokens are setup correctly and that the ip addresses are associated with
the right entries as well.
Compare them to a fresh download if possible to
Most of the work I've done like this has used sparse table definitions and
the empty column trick. I didn't explain that very well in my last
response.
I think by using the userid as the rowid, and using the friend id as the
column name with the score, that I would put an entire user's friend
One of tricks I've used a lot with cassandra is a sparse df definition and
inserted columns programmatically that weren't in the definition.
I'd be tempted to look at putting a users friend list on one row, the row
would look like this:
ROWIDCOLUMNS
UserID UserId, UserID,
How many users and how many games?
--
Colin
+1 320 221 9531
On Jan 22, 2014, at 10:59 AM, Kasper Middelboe Petersen
kas...@sybogames.com wrote:
I can think of two cases where something bad would happen in this case:
1. Something bad happens after the increment but before some or all of the
You don't have to use oracle and pay money, you can use postgresql for
example.
Triggers aren't that hard to implement. We actually do.all of our
mutations now via triggers and we did it inside by effectivley overriding
the mutate logic itself.
On Jan 20, 2012 11:42 AM, Zach Richardson
I'm not aware of anyone classifying what twitter is doing today as
'working.' In fact, I believe that twitter's problems are much larger
than just technology but that's a whole different subject.
What twitter may have realized is that they don't have the resources of
Facebook, that
/EventCloudPro%20
On 7/10/2010 5:21 PM, Benjamin Black wrote:
On Sat, Jul 10, 2010 at 12:22 PM, Colin Clark
co...@cloudeventprocessing.com wrote:
Although I'm a fan of Cassandra, there's no way I'd use it today for my tier
1 deployments, because I don't have the resources of Facebook, and even
though
What were the right questions? I view Facebook's move away from
Cassandra as somewhat significant.
And are they indeed using HBase then, and if so, what were the right
answers?
On 7/6/2010 5:34 AM, David Strauss wrote:
On 2010-07-05 15:40, Eric Evans wrote:
On Sun, 2010-07-04 at 13:14
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