Hi - sorry if this was asked before but I couldn't find any answers about it.
Is the upgrade path from 0.7.6 to 0.8.4 possible via a simple rolling restart?
Are nodes with these different versions compatible - i.e., can one node be
upgraded in order to see if we run into any problems before
On Mon, Aug 15, 2011 at 6:51 PM, Stephen McKamey wrote:
> I'm curious about Expiring Columns. Say I create a Column Family where
> *all* of the Columns are set to be expiring columns. When a row's entire set
> of columns have expired, will an empty row it sill be returned in range
> queries? Or wi
Disjunctions are not yet supported and probably will not be until after 1.0.
On Mon, Aug 15, 2011 at 6:45 PM, Deeter, Derek
wrote:
> Hi,
>
> We are using CQL to obtain data from Cassandra 0.8.1 using Hector and
> getting an error when using ‘OR’ on a secondary index. I get the same error
> when
Just checking do you have read_repair_chance set to something ? The second
request is going to all replicas which should only happen with CL ONE if read
repair is running for the request.
The exceptions are happening during read repair which is running async to the
main read request. It's occu
False alarm, typo further down in cassandra-env.sh was removing all the
opts.
Ian
On Mon, Aug 15, 2011 at 6:08 PM, Ian Danforth wrote:
> All,
>
> When I connect to a node through jconsole it's telling me that my max
> heap is only 1.7gb. (eg http://screencast.com/t/7DP8ovdUv) However I
> bel
All,
When I connect to a node through jconsole it's telling me that my max heap
is only 1.7gb. (eg http://screencast.com/t/7DP8ovdUv) However I believe I
have properly specified that it should be 4GB in cassandra-env.sh. Total
memory is 7.5GB
I see greatly increased GC activity as the heap appr
Dear all,
I wanna report my use case, and have a discussion with you guys.
I'm currently working on my second Cassandra project. I got into somehow a
unique use case: storing traditional, relational data set into Cassandra
datastore, it's a dataset of int and float numbers, no more strings, n
Hi,
We are using CQL to obtain data from Cassandra 0.8.1 using Hector and
getting an error when using 'OR' on a secondary index. I get the same
error when using CQL 1.0.3. All the items in the WHERE clause are
secondary indices and they are all UTF8Type validation. The query works
when leaving
I believe (have not tested) that you would still see the range ghosts talked
about here http://wiki.apache.org/cassandra/FAQ#range_ghosts until compaction
had removed all the columns, and the row once all the columns are gone. Expired
columns are purged during compaction when their ttl runs out.
I'm curious about Expiring Columns. Say I create a Column Family where *all*
of the Columns are set to be expiring columns. When a row's entire set of
columns have expired, will an empty row it sill be returned in range
queries? Or will it just be nicely compacted away?
Hi,
we have come across this as well. We run continuously run rolling repairs
followed by major compactions followed by a gc() (or node restart) to get rid
of all these sstables files. Combined with aggressive ttls on most inserts, the
cluster stays nice and lean.
You don't want your working
Assign the tokens like they are two separate rings, just make sure you
don't have any duplicate tokens.
http://wiki.apache.org/cassandra/Operations#Token_selection
The two datacenters are treated as separate rings, LOCAL_QUORUM will
only delay the client as long as it takes to write the data to
Hi all,
I have a question that documentation has not clear answer for. I have
the following requirements:
1. Synchronously store data in datacenter DC1 on 2+ nodes
2. Asynchronously replicate the same data to DC2 and store it on 2+
nodes to act as a hot standby
Now, I have configured keyspaces w
This is more an artifact of repair's problems than compaction per se.
We're addressing these in
https://issues.apache.org/jira/browse/CASSANDRA-2816 and
https://issues.apache.org/jira/browse/CASSANDRA-2280.
On Mon, Aug 15, 2011 at 3:06 PM, Philippe wrote:
>> It's another reason to avoid major / m
You should give a look at https://github.com/edanuff/CassandraIndexedCollections
This is a rather good starting point for Composites.
2011/8/15 Stephen Pope :
> Hey, is there any documentation or examples of how to use the CompositeType?
> I can't find anything about it on the wiki or the datas
Forgot to mention that stopping & restarting the server brought the data
directory down to 283GB in less than 1 minute.
Philippe
2011/8/15 Philippe
> It's another reason to avoid major / manual compactions which create a
>> single big SSTable. Minor compactions keep things in buckets which mea
>
> It's another reason to avoid major / manual compactions which create a
> single big SSTable. Minor compactions keep things in buckets which means
> newer SSTable can be compacted needing to read the bigger older tables.
>
I've never run a major/manual compaction on this ring.
In my case runni
Multiple cores it is. Thanks.
Solandra manages the "shard" parameters for you. you don't need to specify
anything.
On Mon, Aug 15, 2011 at 3:00 PM, Jeremiah Jordan <
jeremiah.jor...@morningstar.com> wrote:
> When using Solandra, do I need to use the Solr sharding synxtax in my
> queries? I don't think I do because Cassandra i
When using Solandra, do I need to use the Solr sharding synxtax in my
queries? I don't think I do because Cassandra is handling the
"sharding", not Solr, but just want to make sure. The Solandra wiki
references the distributed search limitations, which talks about the
shard syntax further down
You want the solandra data stored under two keyspaces? Or you just want two
different logical indexes.
The former requires changing the keyspace name located in
solandra.properties but you can only access one per process.
The latter would involve creating two different solr cores at different
end
Thanks, Jérémy!
2011/8/15 Jérémy SEVELLEC :
> Hi all,
> I have published some documentations on it :
> https://github.com/jsevellec/cassandra-unit/wiki
> regards
> Jérémy
> Le 10 août 2011 23:20, Jérémy SEVELLEC a écrit :
>>
>> Hi everyone,
>> Let me present you CassandraUnit, a test framework to
Hi all,
I have published some documentations on it :
https://github.com/jsevellec/cassandra-unit/wiki
regards
Jérémy
Le 10 août 2011 23:20, Jérémy SEVELLEC a écrit :
> Hi everyone,
>
> Let me present you CassandraUnit, a test framework to develop application
> with Cassandra backend in TDD S
Does Solandra support multiple schemas? For example I have staging and test
data in two different keyspaces in Cassandra and want that echoed in
Solandra. Possible?
Hey, is there any documentation or examples of how to use the CompositeType? I
can't find anything about it on the wiki or the datastax docs.
Cheers,
Steve
Thanks. I did not see a link to it when I was sending my message.
- Original Message -
From: "Zhu Han"
To: user@cassandra.apache.org
Sent: Saturday, August 13, 2011 12:11:37 AM
Subject: Re: Planet Cassandra is now live
On Sat, Aug 13, 2011 at 4:35 AM, Konstantin Naryshkin < konstant
The count you specify is the worst case, so if you can't even allocate
a List to handle it, you shouldn't be specifying such a high count.
Better find that out immediately, then when your data set grows in
production.
On Mon, Aug 15, 2011 at 8:15 AM, Patrik Modesto
wrote:
> On Mon, Aug 15, 2011 a
A friends friend developed the FreeBSD certification. It is a actually a
difficult process either you need to give thousands of dollars to a place
like prometrics or you need to have people across the world that can
administer the test. You also need to design and keep changing the test
because it
On Mon, Aug 15, 2011 at 15:09, Jonathan Ellis wrote:
> On Mon, Aug 15, 2011 at 7:13 AM, Patrik Modesto
> wrote:
>> PS: while reading the email before I'd send it, I've noticed the
>> keyRange.count =... is it possible that Cassandra is preallocating
>> some internal data acording the KeyRange.cou
Can you create a bug report on https://issues.apache.org/jira/browse/CASSANDRA ?
On Mon, Aug 15, 2011 at 2:24 AM, Philippe wrote:
>> Did you try what it says to do first? "You need to restart this node
>> with -Dcassandra.renew_counter_id=true to fix."
>
> Yes I did and it still logged that error
On Mon, Aug 15, 2011 at 7:13 AM, Patrik Modesto
wrote:
> PS: while reading the email before I'd send it, I've noticed the
> keyRange.count =... is it possible that Cassandra is preallocating
> some internal data acording the KeyRange.count parameter?
That's exactly what it does.
--
Jonathan Ell
Hi,
on our dev cluster of 4 cassandra nodes 0.7.8 I'm suddenly getting:
ERROR 13:40:50,848 Internal error processing get_range_slices
java.lang.OutOfMemoryError: Java heap space
at java.util.ArrayList.(ArrayList.java:112)
at
org.apache.cassandra.service.StorageProxy.getRangeSlice
Depending on where in the world you are, keep an eye / ear out for Data Stax
training http://www.datastax.com/events
Cheers
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 15/08/2011, at 5:56 PM, Joe Stein wrote:
> Certification is good
OK, node latency is fine and you are using some pretty low
consistency. You said NTS with RF 2, is that RF 2 for each DC ?
Correct, I'm using RF 2 for each DC.
I was able to reproduce the cli timeouts on the non replica nodes.
The debug log output from dc1host1 (non replica node):
DEBUG [po
>
> It looks like the error was thrown during a minor compaction. There should
> be a log line from the CompactionManager before hand that says "Compacting…"
> and lists the SSTables it is going to compact. Check that it's from the same
> thread, i.e. [CompactionExecutor:6] in the example below
>
O
>
> Did you try what it says to do first? "You need to restart this node
> with -Dcassandra.renew_counter_id=true to fix."
>
Yes I did and it still logged that error upon restarting.
I'm loath to removing the SSTable as every single repair I run on any node
is streaming data because of out of sync
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