SSANDRA-2474
--
Eric Evans
eev...@rackspace.com
pe:length:value)?
Tentatively, CQL will use colon delimited terms like this, yes
(tentatively).
--
Eric Evans
eev...@rackspace.com
andra/DebianPackaging
--
Eric Evans
eev...@rackspace.com
sed to be), so this is a
bug. It's been fixed now in SVN (both the 0.6 branch, and trunk); if
you're not running from SVN you can apply the following one-liner:
https://svn.apache.org/viewvc/cassandra/branches/cassandra-0.6/debian/init?r1=940575&r2=940574&pathrev=940575
Thanks fo
On Mon, 2010-05-03 at 14:39 -0500, Lee Parker wrote:
> Thanks. I'll apply the patch. I'm not real familiar with the JVM
> options, but I assume that on a production machine I should remove
> -Xdebug and the -Xrunjdwp options.
Yes.
--
Eric Evans
eev...@rackspace.com
h.
>
> http://github.com/edanuff/CassandraCompositeType
Clever. I wonder what a useful abstraction in Hector or one of the other
idiomatic clients would look like.
--
Eric Evans
eev...@rackspace.com
t
(http://bit.ly/32T6Mk).
As Gary mentioned already, it's still very rough. After all the recent
changes in trunk (dropping the keyspace arg, binary keys, etc), it's
just barely back to a state where you can read/write, and only then via
get/insert (i.e. no slicing, batch_mutate,
ython code exercises using
Twissandra[2].
[2]: http://github.com/ericflo/twissandra
Use discount code "os10fos" when signing up to get 20% off.
Hope to you there!
--
Eric Evans
eev...@rackspace.com
.ly/b3E9GS (changes)
[2]: http://cassandra.apache.org/download
--
Eric Evans
eev...@rackspace.com
On Mon, 2010-05-24 at 17:04 -0500, Eric Evans wrote:
> For those interested in Cassandra training, I'll be giving a 3-hour
> tutorial[1] at OSCON this year entitled Hands-on Cassandra.
>
> [1]: http://www.oscon.com/oscon2010/public/schedule/detail/14283
>
> The tu
ter disk IO, (and hence, better performance), with
Rackspace's Cloud Servers.
Full disclosure though, I work for Rackspace. :)
--
Eric Evans
eev...@rackspace.com
omparison between Thrift and Avro API's to determine
> the better of them?
The Plan is to develop enough critical mass around the Avro API that
Thrift can be deprecated. We don't want to maintain more than one of
these long-term.
--
Eric Evans
eev...@rackspace.com
transport).
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-06-22 at 17:47 -0400, James Golick wrote:
> It's also flushing memtables really quickly for a particular CF. Like,
> really quickly. Like, one every minute. I increased the thresholds by
> 10x and it's still going fast.
What is MemtableFlushAfterMinutes set to?
the
Plan (both have indicated as much publically).
> While most recent commits appear to come from Eric Evans and Jonathan
> Ellis, the committers<http://wiki.apache.org/cassandra/Committers>
> list for Cassandra does include, among many others, Facebook, Twitter,
> and Digg.
Work
at
> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405)
> at org.mortbay.jetty.bio.SocketConnector
> $Connection.run(SocketConnector.java:228)
> at org.mortbay.thread.QueuedThreadPool
> $PoolThread.run(QueuedThreadPool.java:582)
--
Eric Evans
eev...@rackspace.com
ding by to answer your questions, and
be sure to submit reports[3] for any issues you may find.
Thanks!
[1]: http://bit.ly/alZJTo
[2]: http://cassandra.apache.org/download
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
gle-collections
> to guava?
In the stable tree? No. In trunk this has already been done.
--
Eric Evans
eev...@rackspace.com
able to get anyone to go into detail on why.
--
Eric Evans
eev...@rackspace.com
ed to
reevaluate.
--
Eric Evans
eev...@rackspace.com
boing.net/2010/07/06/san-francisco-bans-c.html
Are you guys at all concerned that this might be a trend?
> On Jul 7, 2010, at 8:17 AM, Eric Evans wrote:
> > I heard a rumor that Digg was moving away from Coca-Cola products in
> > all of its vending machines and break rooms. Can anyon
On Wed, 2010-07-07 at 10:28 -0700, Ryan King wrote:
> I can't really comment on specifics, but Twitter is more of a tea and
> coffee company.
No offense Ryan, but I don't think people actually take what Twitter
does into account when making important decisions like this.
--
#
>
>
> The \:7000 is from the sample file and description
> at
> http://svn.apache.org/repos/asf/cassandra/tags/cassandra-0.6.3/contrib/property_snitch/README.txt.
>
>
> Is there some other format I should be using?
--
Eric Evans
eev...@rackspace.com
ers are: treat all of the wild-eyed speculation as fact.
--
Eric Evans
eev...@rackspace.com
rating client code etc.
You don't need to generate any code.
--
Eric Evans
eev...@rackspace.com
is
actually using an embedded copy of pycassa.
http://github.com/vomjom/pycassa/issues/issue/11
--
Eric Evans
eev...@rackspace.com
ime
in the next couple of weeks.
--
Eric Evans
eev...@rackspace.com
://cassandra.apache.org/download
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
advice usually given since this
should be the fastest/most efficient way to retrieve a dataset of that
size.
--
Eric Evans
eev...@rackspace.com
ted in the release notes[2], so be sure to read them.
If you find bugs, please file a report[3], and if you have questions,
don't hesitate to ask them.
Have fun!
[1]: http://bit.ly/d4HOMw
[2]: http://bit.ly/9fcewt
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
gt;
> ERROR 12:44:21,477 Error in ThreadPoolExecutor
> java.lang.RuntimeException: java.lang.ArrayIndexOutOfBoundsException:
> -70
Looks like https://issues.apache.org/jira/browse/CASSANDRA-1402
--
Eric Evans
eev...@rackspace.com
/bdEu0g
[2]: http://cassandra.apache.org/download
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
tion, Hector for Java, or Pycassa for
Python are good options. I'm also told the Ruby library at
http://github.com/fauna/cassandra is first-rate as well.
--
Eric Evans
eev...@rackspace.com
scale upgrade to 0.6.5and I'd like to use the debian package
> to install. Does anyone know of a copy of the 0.6.1 debian package
> that might still be available?
http://archive.apache.org/dist/cassandra/debian/pool/main/c/cassandra/cassandra_0.6.1_all.deb
--
Eric Evans
eev...@rackspace.com
fun!
[1]: http://goo.gl/0D6N [CHANGES.txt]
[2]: http://goo.gl/jkIC [NEWS.txt]
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
On Fri, 2010-10-01 at 14:01 -0700, B. Todd Burruss wrote:
> i don't see a beta2 subversion tag. is there one?
Sorry, the tag is there now.
https://svn.apache.org/repos/asf/cassandra/tags/cassandra-0.7.0-beta2
--
Eric Evans
eev...@rackspace.com
ion. "
> kind of seems start up to me, but I may be just english ignorant
That's a colloquial, and probably worth avoiding precisely because it
will confuse those not familiar with it.
This has been updated in trunk. Thanks.
--
Eric Evans
eev...@rackspace.com
eps in the readme file up to* python -v manage.py sync_cassandra*
Twissandra has been updated for the upcoming 0.7 release. Try using
0.7.0 beta2 instead (http://goo.gl/5eDW).
--
Eric Evans
eev...@rackspace.com
On Fri, 2010-10-08 at 16:34 -0500, Michael Shuler wrote:
> This looks like you haven't set up the system to use the Sun JRE, yet.
> Debian/Ubuntu uses CGJ by default.
OpenJDK works fine as well (package openjdk-6-jre).
--
Eric Evans
eev...@rackspace.com
es, which is the first
place I would start looking if it were only occurring on one machine.
> sorry to say, your best bet is to upgrade
I would actually start with some large test builds, kernels work well
for this. Use a high concurrency (> 4).
--
Eric Evans
eev...@rackspace.com
cassandraTransport.open();
> return client;
> } catch (TTransportException exception) {
> exception.printStackTrace();
> }
> return null;
> }
>
> private static void closeConnection() {
> try {
> cassandraTransport.flush();
> cassandraTransport.close();
> } catch (TTransportException exception) {
> exception.printStackTrace();
> }
> }
>
> }
--
Eric Evans
eev...@rackspace.com
On Thu, 2010-10-14 at 13:42 -0500, Eric Evans wrote:
> This list is for the development of Cassandra directly, your question is
> better posed on user@cassandra.apache.org (moving it there).
>
> Before following up though, you might want to check the wiki and list
> archives,
s-new-cassandra-066.
Upgrades to 0.6.6 should be a smooth process, with one minor nit, you
will need to edit your configs in order set a SavedCachesDirectory[2].
Enjoy.
[1]: http://goo.gl/WRxU [CHANGES.txt]
[2]: http://goo.gl/lTOJ [NEWS.txt]
--
Eric Evans
eev...@rackspace.com
sty regressions, (and of course
you need consensus from the rest of the project that long(ish)-term
support doesn't interfere with the project's goals).
So far there hasn't been sufficient interest to pursue this, and old
stable releases have become dead-branches as soon as a new
5285013.html#a5285013
>
> I did start cassandra with the args mentioned above:
>
> bin/cassandra -Dpasswd.properties=mypasswd.properties
> -Daccess.properties=myaccess.properties -f
Try
http://www.riptano.com/docs/0.6.5/install/storage-config#Authenticator
--
Eric Evans
eev...@rackspace.com
10/sessions/587
[7]: http://na.apachecon.com/c/acna2010/sessions/588
[8]: http://www.eventbrite.com/event/981873811
--
Eric Evans
eev...@rackspace.com
No, if you're using the JSON export tools, you'll have to convert those
hex strings into whatever type the binary value represents.
Be sure to send any follow-ups to the user list
(user@cassandra.apache.org), it's a better place to get answers to
questions like this.
--
On Thu, 2010-10-28 at 11:31 -0400, Jose Angel Inda Herrera wrote:
> i need know, cassandra is a DB of graph
No.
--
Eric Evans
eev...@rackspace.com
.gl/lTOJ (NEWS.txt)
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
cassandra.apache.org/download
[4]: http://wiki.apache.org/cassandra/DebianPackaging
--
Eric Evans
eev...@rackspace.com
g (the changes and dsc are signed). I plan to add
an additional suite to the repo so that we can host more than one
version, but haven't gotten to it yet.
--
Eric Evans
eev...@rackspace.com
[1]: https://issues.apache.org/jira/browse/CASSANDRA-1727
[2]: http://goo.gl/iTJHD (CHANGES.txt)
[3]: http://cassandra.apache.org/download
[4]: http://wiki.apache.org/cassandra/DebianPackaging
--
Eric Evans
eev...@rackspace.com
On Sat, 2010-11-13 at 10:21 +0800, Schubert Zhang wrote:
> Thanks.
>
> The tag 0.6.8 is not available in SVN
It's there now. Thanks for letting me know.
--
Eric Evans
eev...@rackspace.com
error.
> Is there any thing I am missing?
Make sure to set the logging level to DEBUG; there should be something
in the logs.
--
Eric Evans
eev...@rackspace.com
ng options" in
> log4j-server.properties, is this enough?
No, you need to set the log level on the root logger. By default that
line looks like...
log4j.rootLogger=INFO,stdout,R
...and you need to make it look like...
log4j.rootLogger=DEBUG,stdout,R
--
Eric Evans
eev...@rackspace.com
e
client application if the login failed, or log something like "logged
in: #" if it succeeded.
Either you're not actually calling login(), or your code is trapping the
exception and obscuring the failure.
--
Eric Evans
eev...@rackspace.com
soning behind *my* decision to use Cassandra, and so I plan
to continue as I always have. Following relevant research and
development, collecting experience (my own and others), and applying it
to the problems I face.
--
Eric Evans
eev...@rackspace.com
with a semicolon.
--
Eric Evans
eev...@rackspace.com
release
notes[2]. Report any problems you find[3], and if you have any
questions, don't hesitate to ask (here is good).
Thanks!
[1]: http://goo.gl/Y3dvE (CHANGES.txt)
[2]: http://goo.gl/cCabD (NEWS.txt)
[3]: https://issues.apache.org/jira/browse/CASSANDRA
--
Eric Evans
eev...@rackspace.com
o-know for people upgrading. If you
read nothing else, please read NEWS.txt. :)
--
Eric Evans
eev...@rackspace.com
o a random node.
The fat client is not as well tested, and it's true that we usually
steer people toward Thrift unless they have specific requirements. If
you're having problems though, we'd love to hear about them, either
here, or in a bug report
(https://issues.apache.org/jira/browse/CASSANDRA).
--
Eric Evans
eev...@rackspace.com
always, be sure to read the release notes[3] when upgrading, we make
every effort to document the process in the hope it will save you some
pain. :)
[3]: http://bit.ly/aiOB9Z (release notes)
[4]: http://bit.ly/c7z7oe (changes)
Enjoy!
--
Eric Evans
eev...@rackspace.com
Big Data at the Computer
History Museum the day after the hackathon
(http://bigdataworkshop.com/).
How many people are interested in attending this as well?
--
Eric Evans
eev...@rackspace.com
li --host localhost <
add-del-super.cli).
> http://pastebin.com/Wrsqk0uW
FWIW, I wasn't able to replicate this (http://pastebin.com/3tuNXLq7).
--
Eric Evans
eev...@rackspace.com
set Keyspace1.Super1['adam']['info']['name'] = 'Frodo!'
del Keyspace1.Super1['adam']['info']
set Keyspace1.Super1['adam']['info']['name'] = 'Frodo!'
get Keyspace1.Super1['adam']['info']
get Keyspace1.Super1['adam']['info']['name']
one-to-many
> map explicitly (locality of reference, for example) - as well as
> minimising the size of the encoded data... I'm guessing that there is no
> prefix-compression for keys? Key compression would likely lead to the
> opposite architectural decisions from a resource-use perspective... and
> would eliminate concerns about maps from single SRC values to very large
> numbers of DST values.
>
> Any hints, tips, comments, pointers to relevant documentation etc. would
> be much appreciated... I'm guessing many others have tackled a problem
> similar to this?
>
--
Eric Evans
eev...@rackspace.com
with consistency level set to 1, so this seems odd to me.
I don't know anything about the Net::Cassandra module, but the update
needs to have a greater timestamp than the original write, and it sounds
like that might not be happening here.
--
Eric Evans
eev...@rackspace.com
mentation flaw in importer tool.
It's been awhile, but if I'm not mistaken, this is because we're writing
SSTables and the records must be written in decorated-key sorted order.
--
Eric Evans
eev...@rackspace.com
t of the OrderPreservingPartitioner since you
can also enumerate keys with RandomPartitioner (that wasn't always the
case).
--
Eric Evans
eev...@rackspace.com
be worth a try (and I'd interested in hearing about it if did).
--
Eric Evans
eev...@rackspace.com
sales and
> accounting teams use our current MS SQL system to perform some data
> mining via SQL. Giving them an interface to allow them to query data
> (in any query language) is a must for our migration.
Nothing to perform data mining per say; you might have a look at Chiton
(http://github.com/driftx/chiton).
--
Eric Evans
eev...@rackspace.com
n ?
The result will be a column that contains the binary value, which you
obtained by using key, column family, and super column name. So, yes.
> Does it matter if it's a single call performance wise ?
Yes, if for no other reason than it requires another round-trip across
the network.
--
Eric Evans
eev...@rackspace.com
lue with its key and column ?
> > The result will be a column that contains the binary value, which
> you
> > obtained by using key, column family, and super column name. So,
> yes.
> >
> What about this new case ?
The result will be a collection of KeySlices representing the key and
corresponding columns, (so yes).
--
Eric Evans
eev...@rackspace.com
ame which I can then
> process to my heart's delight ?
If you're talking about constructing predicates to slice on both time
*and* X coordinate, then no. You can omit the super column name from the
ColumnParent and return a slice of super columns (by time period)
complete with all contained sub-columns, but you can't have it both
ways, no.
--
Eric Evans
eev...@rackspace.com
consistencyLevel,
)
The "columns" attribute of the KeySlice structs returned will contain
the super columns that match the predicate. Each of these super columns
will contain *all* of the sub-columns.
--
Eric Evans
eev...@rackspace.com
e and how data is
> balanced across nodes ?
Partition tolerance doesn't really come into play here, and as for how
the data is distributed, that depends on your dataset, and your choice
of partitioner.
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-04-13 at 16:05 +0200, Philippe wrote:
> I'm confused : don't range queries such as the ones we've been
> discussing require using an orderedpartitionner ?
Alright, so distribution depends on your choice of token.
--
Eric Evans
eev...@rackspace.com
top-level
project, the ASF is sending us off in style with an official press
release covering both. Take one, and pass it down: http://bit.ly/98i5Hq
[1]: http://cassandra.apache.org/download
[2]: http://bit.ly/8ZR0Jc (release notes)
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-04-13 at 11:14 -0500, Lee Parker wrote:
> Any chance of an updated debian package?
Yes. RSN.
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-04-13 at 10:43 -0700, Ned Wolpert wrote:
> Is 0.6.0 a repackage of 0.6.0rc1? If we're running 0.6.0rc1 do we need
> to upgrade?
Yes (repackage), and no (you don't need to upgrade).
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-04-13 at 12:12 -0500, Eric Evans wrote:
> > Any chance of an updated debian package?
>
> Yes. RSN.
I leaned into it. An updated package has been uploaded to the Cassandra
repo (see: http://wiki.apache.org/cassandra/DebianPackaging).
Enjoy.
--
Eric Evans
eev...@rackspace.com
On Tue, 2010-04-13 at 16:56 -0600, Christian Torres wrote:
> Sorry! Can I from Cassandra Cli get all the rows?
No, sorry.
--
Eric Evans
eev...@rackspace.com
).
If your requirements can be met with an SQL database, then sure, why
not?
--
Eric Evans
eev...@rackspace.com
On Wed, 2010-04-14 at 10:16 -0500, Ted Zlatanov wrote:
> Can it support a non-root user through /etc/default/cassandra? I've
> been patching the init script myself but was hoping this would be
> standard.
It's the first item on debian/TODO, but, you know, patches welcome and
orks best for you (but I'm
guessing that you won't notice a difference).
--
Eric Evans
eev...@rackspace.com
Hot on the trails of 0.6.0 comes our latest, 0.6.1. This stable point
release contains a number of important bugfixes[1] and is a painless
upgrade from 0.6.0.
Enjoy!
[1]: http://bit.ly/9NqwAb (changelog)
--
Eric Evans
eev...@rackspace.com
have
considered pushing this one to 0.7, and/or documenting this in the
release notes.
> [1] https://issues.apache.org/jira/browse/CASSANDRA-969
--
Eric Evans
eev...@rackspace.com
ccordingly when upgrading from a previous version.
--
Eric Evans
eev...@rackspace.com
swering your problem in the first
> reply
> > you got. Please don't hijack my replies to other people; that's
> rude.
--
Eric Evans
eev...@rackspace.com
out anything.
Gary Dusbabek and myself will be there as well. Are there any others, or
is everyone conferenced-out? :)
--
Eric Evans
eev...@rackspace.com
On Thu, 2010-04-29 at 14:09 -0500, Lee Parker wrote:
> Is there a preference as to which JRE is used for cassandra?
There are people using both. To the best of my knowledge, there's never
been any evidence that one is a better choice for Cassandra than
another.
--
Eric E
And likewise, this mailing list is the correct place to ask questions for
the Apache Cassandra project.
--
Eric Evans
john.eric.ev...@gmail.com
fficult. The difficultly of rest of the process is irrelevant here,
> because it's the same regardless of how you approach storage compatibility
> mode. My point is that rolling restarts should not be difficult if you
> have the right automation, which you seem to agree with.
>
&
e TTL’s, it would be possible to go straight from C*4 to C*5 with SCM
> NONE. This seems to be the same as it would have been going from 4.0 -> 4.1
> >>
> >> Is there any reason why this should not be done? Has anyone had
> experience of upgrading in this way?
>
--
Eric Evans
john.eric.ev...@gmail.com
rified that it wasn't (just) an issue of having to do
rolling restarts, but the work involved in doing an upgrade. Were it only
the case that the hardest part of doing an upgrade was the rolling
restart...
--
Eric Evans
john.eric.ev...@gmail.com
it *is* strictly about rolling restart logistics, I am
a) surprised (I didn't know this was a problem for anyone), and b) will sit
quietly now and try to understand why that is. :)
> On Wed, Dec 18, 2024 at 10:01 AM Eric Evans
> wrote:
>
>>
>>
>> On Wed, Dec 18, 2024
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