All of the nodes are 0.8.x and no longer 0.7.2 ? It is peculiar. As
another person noted, maybe reviewing the results of netstat -an on
each node could help. I've had issues in the past with JMX --
thinking I had configured it for IP x.x.x.x and went crazy only to see
that it was never configure
I want to build a secondary index on an existed column, how to programmatically
do this using hector API?
Thanks.
--
Dikang Gu
0086 - 18611140205
Hi,
I have manged to generate thrift interface for php along with implementing
auto-loading of both Cassandra and thrift core class.
However during my testing the only query that works as expected is the
create keyspace cql query... all other queries don't do or return any
results nor do they thr
Seems like it had something to do with stale endpoint information. I did a
rolling restart of the whole cluster and that seemed to trigger the nodes
to remove the node that was decommissioned.
On , aaron morton wrote:
Is it showing progress ? It may just be a problem with the information
p
so, that was actually simpler than i thought ay?
cheers guys~
On 26 May 2011 05:38, Roland Gude wrote:
> That is correct. Random partitioner orders rows according to the MD5 sum.
>
> Am 25.05.2011 um 16:11 schrieb "Robert Jackson" >:
>
> Also, it is my understanding that if you are not using
>
If you are using 0.10 or 0.11 of the cassandra gem you will only get rows back
that have values(columns). This is due to the way cassandra handles deleted
rows by adding a tombstone. So if you delete a row (or delete all the columns
in a row) the gem will remove that particular row from the hash
I can get down and dirty in the SQL Server world :)
Best analogy is that cassandra is doing "high safety mode synchronous
mirroring" http://msdn.microsoft.com/en-us/library/ms189852.aspx The
replicating is effectively inside the Transaction commit, cassandra does not
have transactions but you g
Hard to say exactly what the issue is. Are they connected to the same node and
using the same Consistency Level?
Try turing the logging up to DEBUG to see they are issuing the same query.
Hope that helps.
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thel
I've seen discussion of using the EIP but I do not have direct experience.
Others may be able to provide more help.
Previous discussion
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Does-anybody-have-experience-with-running-Cassandra-in-Amazon-s-Virtual-Private-Cloud-VPC-td6
Is it showing progress ? It may just be a problem with the information printed
out.
Can you check from the other nodes in the cluster to see if they are receiving
the stream ?
cheers
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 26
That is correct. Random partitioner orders rows according to the MD5 sum.
Am 25.05.2011 um 16:11 schrieb "Robert Jackson"
mailto:robe...@promedicalinc.com>>:
Also, it is my understanding that if you are not using
OrderPreservingPartitioner a get_range_slices may not return what you would
expec
It sounds like the problem is that the row is getting filled up with
tombstones and becoming enormous? Another idea then, which might not be
worth the added complexity, is to progressively use new rows. Depending on
volume, this could mean having 5-minute-window rows, or 1 minute, or
whatever wor
You're basically intentionally inflicting the worst case scenario on
the Cassandra storage engine:
http://wiki.apache.org/cassandra/DistributedDeletes
You could play around with reducing gc_grace_seconds but a PQ with
"millions" of items is something you should probably just do in memory
these day
Hi Everyone ,
We looking for help with upgrading our Cassandra from 0.6 to 0.7.2 here in
Israel.
If there is anyone hear that can help out with consulting, please email me.
Thanks
Or Offer
SimilarGroup
or.of...@similargroup.com
Firstly any ideas for a quick fix because this is giving me big
production problems. Write/read with QUORUM is reportedly producing
unpredictable results (people have called support regarding monsters
in my MMO appearing and disappearing magically) and many operations
are just failing with
Links for issue causing this:
http://issues.apache.org/jira/browse/CASSANDRA-2670
http://issues.apache.org/jira/browse/CASSANDRA-2280
For anyone in this boat, my advice is:-
1. Do a rolling restart immediately, starting with the node you were running
repair on. If you don't do this, the other nod
Jeepers creepers that's it Jeeves!!! Argh.
Basically once my repair hit a big column family db size exploded until the
node ran out of disk space..
Firstly any ideas for a quick fix because this is giving me big production
problems. Write/read with QUORUM is reportedly producing unpredict
Thanks for the reply.
I agree about the eventual consistency feature but in "addition" I'm trying
to have an oversight if there is a slowness between nodes in a cluster
meaning sometimes "some" network slowness won't translate in CA slowness and
sometimes it will. I guess I'm looking for a process
2011/5/23 Jonathan Ellis :
>> It was installed as 0.7.2 and upgraded with each new official release.
>
> I bet that's the problem, then.
> https://issues.apache.org/jira/browse/CASSANDRA-2244 could cause
> indexes to not be updated for releases < 0.7.4. You'll want to
> rebuild the index.
>
>> By
Can you post the output of "netstat -anp|grep "LISTEN"|grep java" from all
the 3 nodes?
Also compare seconds nodes yaml with new nodes yaml and see what diff. you
find, if any.
Another thing try telnet tests from seed node to the new node.
--
View this message in context:
http://cassandra-user-
We are having problems with repair too.
It sounds like yours are the same. From today:
http://permalink.gmane.org/gmane.comp.db.cassandra.user/16619
On May 25, 2011, at 4:52 PM, Dominic Williams wrote:
> Hi,
>
> I've got a strange problem, where the database on a node has inflated 10X
> after
Hi all,
I'm trying to implement a priority queue for holding a large number (millions)
of items that need to be processed in time order. My solution works - but gets
slower and slower until performance is unacceptable - even with a small number
of items.
Each item essentially needs to be popped
I'm not sure if this is the absolute best advice, but perhaps
running "clean" on the data will help cleanup any data that isn't assigned
to this token - in case you've moved the cluster around before.
Any exceptions in the logs, eg EOF ? I experienced this and it caused the
repairs to trip
Thanks Aaron,
Sorry I didn't see your message sooner.
So the CF Messages using UTF8Type holds the information such as : who has
the right to read/ is it possible to answer to this list etc... There are
two "kinds" of keys. The keys which begin by : "message:uuid" and the
"messagelist:uuid". A co
Hi,
I've got a strange problem, where the database on a node has inflated 10X
after running repair. This is not the result of receiving missed data.
I didn't perform repair within my usual 10 day cycle, so followed
recommended practice:
http://wiki.apache.org/cassandra/Operations#Dealing_with_the
Thanks, that definitely helped. Any idea why my client is showing far less
existing rows than cassandra-cli though?
I'm using the Ruby Cassandra client, and when I get all the rows for the
"Sessions" cf, I get 8 rows returned. However, when I do "list Sessions" in
the cassandra-cli I get 40 rows r
Also, it is my understanding that if you are not using
OrderPreservingPartitioner a get_range_slices may not return what you would
expect.
With the RandomPartitioner you can iterate over the complete list by using the
last row key as the start for subsequent requests, but if you are using a
I cannot Display the Book page you are referring to, but your General
understanding is correct. A Range Refers to several rows, a slice Refers to
several columns. A RangeSlice is a combination of Both. From all rows in a
Range get a specific slice of columns.
Am 25.05.2011 um 10:43 schrieb "dav
get_range_slices is the api to get a slice (of columns) from each of a
range (of rows)
On Wed, May 25, 2011 at 3:42 AM, david lee wrote:
> hi guys,
> i'm reading up on the book "Cassandra - Definitive guide"
> and i don't seem to understand what it says about "ranges and slices"
> my understandin
I recently removed a node (with decommission) from our cluster.
I added a couple new nodes and am now trying to rebalance the cluster using
nodetool move.
However, netstats shows that the node being "moved" is trying to stream data
to the node that I already decommissioned yesterday.
The remo
On 5/25/11 14:08, Timo Nentwig wrote:
On 5/25/11 13:45, Watanabe Maki wrote:
I think I don't get your situation yet, but if you use RF=2, CL=QUORUM is
identical with CL=ALL.
Does it explain your experience?
If it was CL=ALL, it would explain it, however I does not explain why it works
when
I
On 5/25/11 13:45, Watanabe Maki wrote:
I think I don't get your situation yet, but if you use RF=2, CL=QUORUM is
identical with CL=ALL.
Does it explain your experience?
If it was CL=ALL, it would explain it, however I does not explain why it works
when
I decommission one node. RF=2 means that
I think I don't get your situation yet, but if you use RF=2, CL=QUORUM is
identical with CL=ALL.
Does it explain your experience?
maki
On 2011/05/25, at 19:39, Timo Nentwig wrote:
> Hi!
>
> 5 nodes, replication factor of 2, fifth node down.
>
> As long as I write a single column with hector
Hi!
5 nodes, replication factor of 2, fifth node down.
As long as I write a single column with hector or pelops, it works. With 2
columns it fails
because there are supposed to few servers to reach quorum. Confusing. If I
decommission the fifth
node with nodetool quorum works again and I can s
hi guys,
i'm reading up on the book "Cassandra - Definitive guide"
and i don't seem to understand what it says about "ranges and slices"
my understanding is
a range as in "a mathematical range to define a subset from an ordered set
of elements",
in cassandra typically means a range of rows wherea
Ok - obviously these haven't been my brightest days.
The stream request sent to the neighbors doesn't contain the CF for which the
ranges have been determined to mismatch.
So every diff in every CF will result in getting that range from every CF of
the neighbor.
That explains everything.
So I
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