Another option would of course be to store a mapping between dir/filenames
and Keyspace/columns familes together with other info related to keyspaces
and column families. Just add API/command line tools to look up the
filenames and maybe store the values in the files as well for recovery
purposes.
I've been doing it for years with no technical problems. However,
using "%" as the escape char tends to, in some cases, confuse a
certain operating system whose name may or may not begin with "W", so
using something else makes sense.
However, it does require an extra cognitive step for th
Beyond aesthetics, specific reasons?
Terje
On Tue, Aug 31, 2010 at 11:54 AM, Benjamin Black wrote:
> URL encoding.
>
>
URL encoding.
On Mon, Aug 30, 2010 at 5:55 PM, Aaron Morton wrote:
> under scores or URL encoding ?
> Aaron
> On 31 Aug, 2010,at 12:27 PM, Benjamin Black wrote:
>
> Please don't do this.
>
> On Mon, Aug 30, 2010 at 5:22 AM, Terje Marthinussen
> wrote:
>> Ah, sorry, I forgot that underscore was
under scores or URL encoding ?AaronOn 31 Aug, 2010,at 12:27 PM, Benjamin Black wrote:Please don't do this.
On Mon, Aug 30, 2010 at 5:22 AM, Terje Marthinussen
wrote:
> Ah, sorry, I forgot that underscore was part of \w.
> That will do the trick for now.
>
> I do not see the big issue with file n
Please don't do this.
On Mon, Aug 30, 2010 at 5:22 AM, Terje Marthinussen
wrote:
> Ah, sorry, I forgot that underscore was part of \w.
> That will do the trick for now.
>
> I do not see the big issue with file names though. Why not expand the
> allowed characters a bit and escape the file names?
what's the average size of a user?
As I know, lucandra will first poll the data from cassandra, then do
computation in the client. That's ok for small rows.
But we have 1M row in average, and some rows scale to 100M; at the same
time, we expect high reading qps.
Polling these data to client machin
We use Lucandra as well for searching for users, as well as
geo-encoding. It really works well except for numeric fields.
https://issues.apache.org/jira/browse/CASSANDRA-1235
That bug may be a bit of an issue, but after they release 0.6.5 all the
Lucene functionality will be available to you.
T
On Mon, Aug 30, 2010 at 5:18 PM, Peter Schuller
wrote:
> Has anyone run Cassandra with G1 in production for prolonged periods
> of time?
Not AFAIK.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com
> collection runs for the cases tested. In most cases, I prefer having low
> pauses due to any garbage collection runs and don't care too much about the
> shape of the memory usage, and I guess, that's the reason why the low pause
> collector is used by default for running cassandra. For myself, I
I'm not using connection poolin where the same tcp socket is used
between different php requests. I open a new thrift connection with
new socket to the node and I use the node through the request and I
close it after. The get_slice requests are all happening in the same
request, so something odd ha
On Mon, Aug 30, 2010 at 6:05 AM, Juho Mäkinen wrote:
> The application is using the
> same cassandra thrift connection (it doesn't close it in between) and
> everything is happening inside same php process.
>
This is why you are seeing this problem (and is specific to connection
reuse in certain
I'm in!
We really need a better PHP Thrift
awesome, thanks, I'm subscribed :)
On Mon, Aug 30, 2010 at 10:05 PM, Jeremy Hanna
wrote:
> There has been a new mailing list created for those who are working on
> Cassandra clients above thrift and/or avro. You can subscribe by sending an
> email to client-dev-subscr...@cassandra.apache.org or
Thanks for the suggestion.
On Aug 30, 2010, at 8:01 PM, Norman Maurer wrote:
> I think you should try jobs at apache.org too ;)
>
> Bye,
> Norman
>
> 2010/8/25 Dimitry Lvovsky :
>> Hi All,
>> Please forgive the job offer spam.
>>
>> We're looking to add a developer with experience using Cassa
There has been a new mailing list created for those who are working on
Cassandra clients above thrift and/or avro. You can subscribe by sending an
email to client-dev-subscr...@cassandra.apache.org or using the link at the
bottom of http://cassandra.apache.org
The list is meant to give client
sstable2json discussed here http://wiki.apache.org/cassandra/Operations may be
what you are after, or the snapshot feature. Not sure what you want to use the
dump for.
If you do not know the keys in the CF in advance take a look at
get_range_slices (http://wiki.apache.org/cassandra/API) it all
I think you should try jobs at apache.org too ;)
Bye,
Norman
2010/8/25 Dimitry Lvovsky :
> Hi All,
> Please forgive the job offer spam.
>
> We're looking to add a developer with experience using Cassandra, to join
> our team in Barcelona. An ideal candidate will have a strong CS background
>
On Mon, Aug 30, 2010 at 1:02 PM, Dave Viner wrote:
> Hi Edward,
> By "down hard", I assume you mean that the machine is no longer responding
> on the cassandra thrift port. That makes sense (and in fact is what I'm
> doing currently). But, it seems like the real improvement is something that
> w
Is there an easy way to retrieve all values from a CF.. similar to a
dump?
How about retrieving all columns for a particular key?
In the second use case a simple iteration would work using a start and
finish but how would this be accomplished across all keys for a
particular CF when you don'
Hi Edward,
By "down hard", I assume you mean that the machine is no longer responding
on the cassandra thrift port. That makes sense (and in fact is what I'm
doing currently). But, it seems like the real improvement is something that
would allow for a simple monitor that goes beyond the simple "
Thanks! That did it. Looks like the connection happens on 10036 and then the
server negotiates a separate port for continued communication.
Found this article once I knew what to look for. It also describes how to get
more consistency on port numbers to allow for ssh tunneling and firewalls.
F
On Mon, Aug 30, 2010 at 12:40 PM, Dave Viner wrote:
> FWIW - we've been using HAProxy in front of a cassandra cluster in
> production and haven't run into any problems yet. It sounds like our
> cluster is tiny in comparison to Anthony M's cluster. But I just wanted to
> mentioned that others out
On Mon, Aug 30, 2010 at 10:10 PM, Jonathan Ellis wrote:
> column names are stored per cell
>
> (moving to user@)
>
I think that is already accommodated for in my numbers?
What i listed was measured from the actual SSTable file (using the output
from "strings ), so multiples of the supercolumn
FWIW - we've been using HAProxy in front of a cassandra cluster in
production and haven't run into any problems yet. It sounds like our
cluster is tiny in comparison to Anthony M's cluster. But I just wanted to
mentioned that others out there are doing the same.
One thing in this thread that I t
HI Cassam,
I'm using the perl Thrift API against 0.6.4 currently.
It sounds like you are having trouble getting thrift installed and/or
getting the perl bindings built. If you already have thrift installed, you
can just run:
% thrift --gen perl interface/cassandra.thrift
The libraries are now
I think that JMX needs additional ports to function correctly. Try to
disable all firewalls between the client and the server so that client
can connect to any port in the server and try again.
- Juho Mäkinen
On Mon, Aug 30, 2010 at 7:07 PM, Allan Carroll wrote:
> Hi,
>
> I'm trying to manage m
Hi,
I'm trying to manage my cassandra cluster from a remote box and having issues
getting nodetool to connect. All the machines I'm using are running on AWS.
Here's what happens when I try:
/opt/apache-cassandra-0.6.4/bin/nodetool -h xxx.xxx.xxx.143 -p 10036 ring
Error connecting to remote JMX
On Mon, Aug 30, 2010 at 4:24 PM, Mike Peters
wrote:
> Have you considered instead of retrying the failing node, to iterate through
> other nodes in your cluster?
Yes, the $this->connect() does just that: it removes the previous node
from the node list and gives the list back to thrift connection
Interesting! Thanks for sharing
Have you considered instead of retrying the failing node, to iterate
through other nodes in your cluster?
If one node is failing (let's assume it's overloaded for a minute),
you're probably going to be better off having the client send the insert
to the next
Yes, I've already planning to do so. The class has still some
dependencies into our other functions which I need to first clear out.
Basically each api call is wrapped inside a retry loop as we can
assume that each operation can be retried as many times as needed:
$tries = 0;
column names are stored per cell
(moving to user@)
On Mon, Aug 30, 2010 at 6:58 AM, Terje Marthinussen
wrote:
> Hi,
>
> Was just looking at a SSTable file after loading a dataset. The data load
> has no updates of data but:
> - Columns can in some rare cases be added to existing super columns
>
If you're only interested in accessing data natively, I suggest you
try the "fat client." It brings up a node that participates in
gossip, exposes the StorageProxy API, but does not receive a token and
so does not have storage responsibilities.
StorageService.instance.initClient();
in 0.7 you wi
I've ran into a strange bug where get_slice returns the result from
previous query. My application iterates over a set of columns inside a
supercolumn and for some reason it sometimes (quite rarely but often
enough that it shows up) the results gets "shifted" around so that the
application gets the
Is it possible this was a new node with a manual token and
autobootstrap turned off?
If not, could you give more details about the node?
Gary.
On Fri, Aug 27, 2010 at 17:58, B. Todd Burruss wrote:
> i got the latest code this morning. i'm testing with 0.7
>
>
> ERROR [ROW-MUTATION-STAGE:388]
Hi guys,
There are several patches you need to apply to Thrift to completely resolve
all timeout errors.
Here's a list of them along with a link to download a patched thrift
library:
http://www.softwareprojects.com/resources/programming/t-php-thrift-library-for-cassandra-1982.html
http://www.
Chen,
Have you considered using http://www.slideshare.net/otisg/lucandra Lucandra
for Inbox search?
We have a similar setup and are currently looking into using Lucandra over
implementing the searching ourselves with pure Cassandra.
--
View this message in context:
http://cassandra-user-in
Juho, do you mind sharing your implementation with the group?
We'd love to help as well with rewriting the thrift interface, specificaly
TSocket.php which seems to be where the majority of the problems are
lurking.
Has anyone tried compiling native thrift support as described here
https://wik
Ah, sorry, I forgot that underscore was part of \w.
That will do the trick for now.
I do not see the big issue with file names though. Why not expand the
allowed characters a bit and escape the file names? Maybe some sort of URL
like escaping.
Terje
On Mon, Aug 30, 2010 at 6:29 PM, Aaron Morton
Moving to the user list.
The new restrictions were added as part of CASSANDRA-1377 for 0.6.5 and 0.7,
AFAIK it's to ensure the file names created for the CFs can be correctly
parsed. So it's probably not going to change.
The names have to match the \w reg ex class, which includes the underscor
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