> Is this a feature or a bug?
Yes :)
You are probably on a bit of an edge case.
Maybe a purge-able tombstone can be ignored as part of the merkle tree
calculation and skipped from the streaming? (have not checked the code to see
if they already are.)
Can you create a ticket on https://issue
"What version of cassandra are you using ?"
1.1.2
"Can you explain this further?"
I had an unexplained amount of reads (up to 1800 r/s and 90 Mo/s) on one
server the other was doing about 200 r/s and 5 Mo/s max. I fixed it by
rebooting the server. This server is dedicated to cassandra. I can't t
I heard about virtual nodes. But it doesn't come out until 1.2. Is it easy to
convert the existing installation to use virtual nodes?
Thanks.
-Wei
From: aaron morton
To: user@cassandra.apache.org
Sent: Wednesday, October 31, 2012 2:23 PM
Subject: Re: Benifi
You will have better luck with Data Stax Enterprise questions on their support
forums:
http://www.datastax.com/support-forums/
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 31/10/2012, at 4:17 PM, dong.yajun wrote:
> hi list,
>
> Jus
Good question.
The is a comment on the DS blog or docs somewhere that says on EC2 running the
commit log on the raid-0 ephemeral is preferred. I think the recommendation was
specifically about how the disks are setup on EC2.
While the commit log will be competing with logs and everything else
> I have been told that it's much easier to scale the cluster by doubling the
> number of nodes, since no token changed needed on the existing nodes.
Yup.
> But if the number of nodes is substantial, it's not realistic to double it
> every time.
See the keynote from Jonathan Ellis or the talk on V
What version of cassandra are you using ?
> I finally restart Cassandra. It didn't solve the problem so I stopped
> Cassandra again on that node and restart my ec2 server. This solved the issue
> (1800 r/s to 100 r/s).
Can you explain this further?
Was something writing to the cluster ?
Did you
Thanks Tristan and Sylvain, it all makes sense now.
One follow up question regarding the composite column. It seems that for the
where clause I can only restrict the query on the first composite column
(friend_id, in my case). I understand it's determined by the underlining row
storage structu
Hi guys!
We are getting the following message in our logs
ERROR [CompactionExecutor:535] 2012-10-31 12:14:14,254 CounterContext.java
(line 381) invalid counter shard detected;
(ea9feac0-ec3b-11e1--fea7847157bf, 1, 60) and
(ea9feac0-ec3b-11e1--fea7847157bf, 1, -60) differ only in count; wi
I've been experiencing a behavior that is undesirable and it seems like a
bug that causes a high amount of wasted work.
I have a CF where all columns have a TTL, are generally all inserted in a
very short period of time (less than a second) and are never over-written
or explicitly deleted. Eventu
On Wed, Oct 31, 2012 at 11:38 AM, John Sanda wrote:
> Can/should i assume that i will get even range distribution or close to it
> with random
> token selection?
The short answer is: If you're using virtual nodes, random token
selection will give you even range distribution.
The somewhat longer
On Wed, Oct 31, 2012 at 7:14 PM, Wei Zhu wrote:
> I try to use CQL3 to create CF with composite columns,
>
> CREATE TABLE Friends (
> ... user_id bigint,
> ... friend_id bigint,
> ... status int,
> ... source int,
> ... created time
On Tue, Oct 30, 2012 at 4:18 AM, 張 睿 wrote:
> Does anyone here know if there is an efficient way to migrate multiple
> cassandra clusters' data
> to a single cassandra cluster without any dataloss.
Yes.
1) create schema which is superset of all columnfamilies and all keyspaces
2) if all source c
CQL3 handles columns/rows/keys differently than Cassandra itself
underneath. If you look closely you'll see that your real primary key
is in fact only a Long:
> Key Validation Class: org.apache.cassandra.db.marshal.LongType
If you want to know more about it, check these 2 articles:
http://
You didn't do anything wrong, it's how CQL3 works. I suggest having a
look at http://www.datastax.com/dev/blog/thrift-to-cql3. Especially
the section called "Non compact tables" might hopefully explains more.
--
Sylvain
On Wed, Oct 31, 2012 at 6:14 PM, Wei Zhu wrote:
> I try to use CQL3 to creat
> CQL 3 is not locked, the more feedback the better.
I'm pretty sure that my use case is not relevant enough to consider
special cases for it in Cassandra/CQL. In fact it's quite the other
way around - it's my job to determine how well my tool fits Cassandra
an other databases.
> Can you provide
I try to use CQL3 to create CF with composite columns,
CREATE TABLE Friends (
... user_id bigint,
... friend_id bigint,
... status int,
... source int,
... created timestamp,
... lastupdated timestamp,
...
I am not entirely clear on what
http://wiki.apache.org/cassandra/VirtualNodes/Balance#imbalance is saying
with respect to random vs. manual token selection. Can/should i assume that
i will get even range distribution or close to it with random token
selection? For the sake of discussion, what is a
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