Hi all,
is there any documentation about proper JNA configuration?
I do not understand few things:
1) Does JNA use JVM heap settings?
2) Do I need to decrease max heap size while using JNA?
3) How do I limit RAM allocated by JNA?
4) Where can I see / monitor row cache size?
5) I've configure
Yes that would be pretty nice feature to see!
On Mon, Oct 31, 2011 at 10:45 PM, Ertio Lew wrote:
> Thanks so much SebWajam for this great piece of work!
>
> Is there a way to set a data type for displaying the column names/ values
> of a CF ? It seems that your project always uses String Seri
Hi Cassandra users,
I've begun work on a very exciting project which has been moving quite
slowly recently. It's combining Apache Nutch, Gora ORM framework (Apache
Incubator) and Apache Cassandra as a back end storage platform for web
crawling.
Atm I'm running Cassandra 0.8.4 in local/single mode
Hm - kind of hijacking this but since we have a similar problem I might throw
in my idea:
We need consistent, idempotent counters. On the client side we can create
unique (replayable) keys - like your user ids.
What we want to do is:
- add increment commands as columns such as [prefixByte.uniq
Hello,
I'm new to the list and also to Cassandra. I found it when I was searching
for something to replace our busy mysql server.
One of the things we use the server for is filtering IPs based on a list of
IP ranges. These ranges can be small and big, and there are about 50k of
them in the databa
How many total ranges to you expect to have long term?
On Tue, Nov 1, 2011 at 11:17 AM, Tamas Marki wrote:
> Hello,
>
> I'm new to the list and also to Cassandra. I found it when I was searching
> for something to replace our busy mysql server.
>
> One of the things we use the server for is filte
It's unpredictable, there could be hundreds of thousands, even millions
(but unlikely).
Tamas
On Tue, Nov 1, 2011 at 5:38 PM, Zach Richardson wrote:
> How many total ranges to you expect to have long term?
>
> On Tue, Nov 1, 2011 at 11:17 AM, Tamas Marki wrote:
> > Hello,
> >
> > I'm new to th
On Tue, Nov 1, 2011 at 11:17 AM, Tamas Marki wrote:
> Hello,
>
> I'm new to the list and also to Cassandra. I found it when I was searching
> for something to replace our busy mysql server.
>
> One of the things we use the server for is filtering IPs based on a list of
> IP ranges. These ranges ca
Just a short comment -- we are going the CSV way as well because of its
compactness and extreme portability.
The CSV files are kept in the cloud as backup. They can also find other
uses. JSON would work as well, but
it would be at least twice as large in size.
Maxim
On 9/22/2011 1:25 PM, Nehal
On Tue, Nov 1, 2011 at 9:17 AM, Tamas Marki wrote:
> Hello,
>
> I'm new to the list and also to Cassandra. I found it when I was searching
> for something to replace our busy mysql server.
>
> One of the things we use the server for is filtering IPs based on a list of
> IP ranges. These ranges can
I have a problem or at least something that I have missed to
understand regarding commit log removal.
I'm running cassandra 1.0.1 but have seen the same "thing" in 1.0.
I thought that when a node is flushed or drained, it's memtable is
flushed to disk and the commit log is removed and new commit lo
"hasnext false" means "this is the last commitlog segment, so we'll
keep it around to add new entries too until it fills up at 128MB.
On Tue, Nov 1, 2011 at 3:06 PM, Fredrik Stigbäck
wrote:
> I have a problem or at least something that I have missed to
> understand regarding commit log removal.
>
I saw a mention of R on Cassandra:
http://comments.gmane.org/gmane.comp.db.cassandra.user/5681
Does anyone know if this has traction somewhere?
-brian
--
Brian ONeill
Lead Architect, Health Market Science (http://healthmarketscience.com)
mobile:215.588.6024
blog: http://weblogs.java.net/blog/bo
Any advice for renaming a column family in version 1.0.x? Like most of
the docs, the FAQ
(http://wiki.apache.org/cassandra/FAQ#modify_cf_config) is out of date.
Todd
Hi,
I'm having a problem with doing a multiget_slice on a super column family
after its first flush. Updates to the column values work properly, but
trying to retrieve the updated values using a multiget_slice operation fail
to get the updated values. Instead they return the values from before the
Looks like a bug. I've created
https://issues.apache.org/jira/browse/CASSANDRA-3440.
On Tue, Nov 1, 2011 at 5:50 PM, Ramesh Natarajan wrote:
> We have a 8 node cassandra cluster running 1.0.1. After running a load
> test for a day we are seeing this exception in system.log file. At
> this time w
Can you file a Jira ticket? And, can you reproduce using normal columns?
On Tue, Nov 1, 2011 at 7:06 PM, Mike Smith wrote:
> Hi,
> I'm having a problem with doing a multiget_slice on a super column family
> after its first flush. Updates to the column values work properly, but
> trying to retrie
ERROR [CompactionExecutor:655] 2011-11-01 20:11:12,652
AbstractCassandraDaemon.java (line 139) Fatal exception in thread
Thread[CompactionExecutor:655,1,main]
java.io.IOError: java.io.EOFException
at
org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java
:265)
That doesn't make sense to me. CS:147 is
columnFamilyKeyMap.put(row.key, row.cf);
where cFKM is
Map columnFamilyKeyMap = new
HashMap();
So cFKM can't be null, and HashMap accomodates both null key and null
value, so I'm not sure what there is to thorw NPE.
On Tue, Nov 1, 2
Here is my wish list -
I would love Cassandra to
- provide a efficient method to retrieve the count of columns for a
given row without resorting to read all columns and calculate the
count for a given row key.
- support auto increment column names - Column slice based query
doesn't take advant
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