We have a log only data structure… everything is appended and nothing is
ever updated.
We should be totally fine with having lots of SSTables sitting on disk
because even if we did a major compaction the data would still look the
same.
By 'lots' I mean maybe 1000 max. Maybe 1GB each.
However, I
That is not expected. What client are you using and how are you setting the
ttls? What version of Cassandra?
---
Chris Lohfink
On May 8, 2014, at 9:44 AM, Sebastian Schmidt wrote:
> Hi,
>
> I'm using the TTL feature for my application. In my tests, when using a
> TTL of 5, the inserted rows
On Mon, May 12, 2014 at 10:18 AM, Paulo Ricardo Motta Gomes <
paulo.mo...@chaordicsystems.com> wrote:
> Is there a way to disable reads from a node while performing rebuild from
> another datacenter? I tried starting the node in write survery mode, but
> the nodetool rebuild command does not work
Upgrade to 2.0.7 fixed this for me.
You can also try 'nodetool resetlocalschema' on disagreeing nodes. This
worked temporarily for me in 2.0.6.
ml
On Mon, May 12, 2014 at 3:31 PM, Gaurav Sehgal wrote:
> We have recently started seeing a lot of Schema Disagreement errors. We
> are using Cassan
We have recently started seeing a lot of Schema Disagreement errors. We are
using Cassandra 2.0.6 with Oracle Java 1.7. I went through the Cassandra
FAQ and followed the below steps:
- nodetool disablethrift
- nodetool disablegossip
- nodetool drain
-
'kill '.
As per the docume
Hi everyone,
I couple of months ago I started working on a new Hadoop InputFormat
that we needed for something at my work. It is in a semi-working
state now so I thought I would post a link in case anyone is
interested:
https://github.com/wibiclint/cassandra2-hadoop2
At the time I started worki
Hi,
Cassandra returns ips of the nodes in the cassandra cluster for further
communication between hadoop program and the casandra cluster. Is there a
way to configure the cassandra cluster to return hostnames instead of ips?
My cassandra cluster is on AWS and has no elastic ips which can be access
I keep asking same question it seems -- sign of insanity.
Cassandra version 1.2, not using vnodes (legacy).
On 2014-03-07 19:37:48 +, Robert Coli said:
On Fri, Mar 7, 2014 at 6:00 AM, Oleg Dulin wrote:
I have the following situation:
10.194.2.5 RAC1 Up Normal 378.6 GB
Hello,
I'm not able to replace a dead node using the ordinary procedure
(boostrap+join), and would like to rebuild the replacement node from
another DC. The problem is that if I start a node with auto_bootstrap=false
to perform the rebuild, it automatically starts serving empty reads
(CL=LOCAL_ONE
Hello,
Do people use counters when they want to have idempotent operations in
cassandra?
I have a use case for using a counter to check for a count of objects in a
partition. If the counter is more than some value then the data in the
partition is moved into two different partitions. I can't work
Hello Kevin
You can disable compaction by configuring the compaction options of your
table as follow:
compaction={'min_threshold': '0', 'class':
'SizeTieredCompactionStrategy', 'max_threshold': '0'}
Regards
Duy Hai DOAN
On Wed, May 7, 2014 at 2:55 AM, Kevin Burton wrote:
> I'm looking a
You need to set grace period as well.
Peter
On Thu, May 8, 2014 at 8:44 AM, Sebastian Schmidt wrote:
> Hi,
>
> I'm using the TTL feature for my application. In my tests, when using a
> TTL of 5, the inserted rows are still returned after 7 seconds, and
> after 70 seconds. Is this normal or am
Hi,
Searching for Cassandra with MapReduce, I am finding that the search
results are really dated -- from version 0.7 & 2010/2011.
Is there a good blog/article that describes how using MapReduce on
Cassandra table ?
>From my naive understanding, Cassandra is all about partitioning. Querying
is b
> We've learned that compaction strategy would be an important point cause
> we've ran into 'no space' trouble because of the 'sized tiered' compaction
> strategy.
If you want to get the most out of the raw disk space LCS is the way to go,
remember it uses approximately twice the disk IO.
> F
> Is there a good blog/article that describes how using MapReduce on Cassandra
> table ?
The best way to get into cassandra and hadoop is to play with Cassandra DSE.
It’s free for development, costs for production, and is an easy way to learn
about hadoop integration without having to worry abo
> On the homepage of libQtCassandra, its mentioned that switching between
> keyspaces is costly when storing into Cassandra thereby affecting the write
> throughput. Is this necessarily true for other libraries like pycassa and
> hector as well?
>
>
When using the thrift connection the keyspac
> > read_repair_chance=1.00 AND
There’s your problem.
When read repair is active for a read request the coordinator will over read to
all UP replicas. Your client request will only block waiting for the one
request (the data request), the rest of the repair will happen in the
background.
Ins't read repair supposed to be done asynchronously in background ?
On Mon, May 12, 2014 at 2:07 AM, graham sanderson wrote:
> You have a read_repair_chance of 1.0 which is probably why your query is
> hitting all data centers.
>
> On May 11, 2014, at 3:44 PM, Mark Farnan wrote:
>
> > Im tryi
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