On Fri, Jul 13, 2012 at 4:04 AM, aaron morton wrote:
> The logic is here
> https://github.com/apache/cassandra/blob/cassandra-1.1/src/java/org/apache/cassandra/locator/NetworkTopologyStrategy.java#L78
Thanks Aaron for pointing to the code.
>
> a. n>r : I am assuming, have 1 replica in each rack.
Hi
As I understand that writes in cassandra are directly pushed to memory
and using counters with CL.ONE shouldn't take the read latency for
counters in account. So Writes for incrementing counters with CL.ONE
should basically be really fast.
But in my 8 node cluster(16 core/32G ram/cassandra1.0.
Hi
After change the parameter of concurrent compactor, we can limit Cassandra
to use 100% of one core at that moment. (concurrent_compactors: 1)
And I got the stack of the "crazy" thread, it last 2~3 minutes, on same
stack.
Any clue of this issue?
Thread 18114: (state = IN_JAVA)
- java.util.A
oh. darn. I was hoping for something like, "here's the data you
requested, and by the way, latencies are 80% to the point of timeout; might
want to back off a little"
mx4j it is.
On Wed, Jul 11, 2012 at 10:46 PM, Tyler Hobbs wrote:
> JMX is really the only way it exposes that kind of informa
Sounds a lot like a bug that I hit that was filed and fixed recently:
https://issues.apache.org/jira/browse/CASSANDRA-4432
-Mike
On Jul 12, 2012, at 8:16 PM, Edward Capriolo wrote:
> Possibly the bug with nanotime causing cassandra to think the change happened
> in the past. Talked about onlis
Historically you have not been able to stream stables between different
file formats. Cassandra 1.0 creates files named hc . While 1.1 uses hd.
Since bulk loading streams I am not sure this will work.
On Thursday, July 12, 2012, aaron morton wrote:
> Do you have the full error logs ? Their should
Possibly the bug with nanotime causing cassandra to think the change
happened in the past. Talked about onlist in past few days.
On Thursday, July 12, 2012, aaron morton wrote:
> Do multiple nodes say the RF is 2 ? Can you show the output from the CLI
? Do show schema and show keyspace say the sam
Thanks Aaron. My major concern is upgrade node by node. Because currently we
are using 1.0.6 in production and plan is to upgrade singe node to 1.1.2 at
a time.
Any comments?
Thanks.
--
View this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Concerns-about
Do multiple nodes say the RF is 2 ? Can you show the output from the CLI ? Do
show schema and show keyspace say the same thing ?
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 13/07/2012, at 7:39 AM, Dustin Wenz wrote:
> We recently inc
BTW, an issue was just fixed with dynamic columns in hector, you might
want to try trunk.
https://github.com/hector-client/hector/commit/2910b484629add683f61f392553e824c291fb6eb
On 07/12/2012 06:25 PM, aaron morton wrote:
You may have better luck on the Hector Mailing list…
https://groups.go
> WIll it also use the
> snitch/strategy info to find next 'R' replicas 'closest' to
> coordinator-node ?
yes.
> 2. In a single DC ( with n racks and r replicas ) what algorithm
The logic is here
https://github.com/apache/cassandra/blob/cassandra-1.1/src/java/org/apache/cassandra/locator/NetworkT
It's always a good idea to have a read of the NEWS.txt file
https://github.com/apache/cassandra/blob/cassandra-1.1/NEWS.txt
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 12/07/2012, at 5:51 PM, Tyler Hobbs wrote:
> On Wed, Jul 11, 2012 at
You may have better luck on the Hector Mailing list…
https://groups.google.com/forum/?fromgroups#!forum/hector-users
Here is something I found in the docs though
http://hector-client.github.com/hector/build/html/content/composite_with_templates.html
Cheers
-
Aaron Morton
Freel
Can pages appear in many documents ? If not try this
Document CF:
row_key: doc_id
column: page_number is the order of pages, page_id is the
row key for below
Page CF:
row_key: page_id
columns:
- doc_id
- page_data
If you know the page_id, read the doc_id from Page CF, then ite
I am loading a large set of data into a CF with composite key. The load is
going pretty slow, hundreds or even thousands times slower than it would do in
RDBMS.
I have a choice of how granular my physical key (the first component of the
primary key) is, this way I can balance between smaller row
We recently increased the replication factor of a keyspace in our cassandra
1.1.1 cluster from 2 to 4. This was done by setting the replication factor to 4
in cassandra-cli, and then running a repair on each node.
Everything seems to have worked; the commands completed successfully and disk
usa
On Tue, 10 Jul 2012 14:35:23 -0700, Frank Hsueh wrote:
> after reading the JIRA, I decided to use Java 6.
It has nothing to do with the JDK. I can reproduce it with either JDK6 or
JDK7 as well.
> anybody seen this before? is this related to 4337 ?
It's exactly that.
-h
When executing a query like:
get events WHERE Firm=434550 AND ds_timestamp>=1341955958200 AND
ds_timestamp<=1341955958200;
what the 2ndary index implementation will do is:
1) it queries the index for Firm for the row with key 434550 (because
that's the only one restricted by an equal clause, and
Thanks. Some follow up questions :
1. How do the reads use strategy/snitch information ? I am assuming
the reads can go to any of the replicas. WIll it also use the
snitch/strategy info to find next 'R' replicas 'closest' to
coordinator-node ?
2. In a single DC ( with n racks and r replicas ) wh
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