at 1:37 PM, Ramesh Natarajan wrote:
>
>>
>> Note: Ownership information does not include topology; for complete
>> information, specify a keyspace
>>
>> Also the owns column is 0% for the second DC.
>>
>> Is this normal?
>>
>
> Yes.
>
>
Hi,
I have 14 cassandra nodes, running as 2 data centers
using PropertyFileSnitch as follows
192.168.1.101=DC1:RAC1
192.168.1.102=DC1:RAC1
192.168.1.103=DC1:RAC1
192.168.1.104=DC1:RAC1
192.168.1.105=DC1:RAC1
192.168.1.106=DC1:RAC1
192.168.1.107=DC1:RAC1
192.168.1.108=DC2:RAC1
192.168.1.109=DC2:RA
I am trying to integrate opscenter in our environment and I was
wondering if we can use PAM authentication instead of a password file
for opscenter authentication?
thanks
Ramesh
dy a schema in the cassandra
> cluster, you'll get a exception from schematool but no impact to the
> cluster.
>
> Bye
>
> Carlos Pérez Miguel
>
>
>
> 2012/1/17 Ramesh Natarajan :
>
> I usually start cassandra and then use cassandra-cli to import a
>
> sc
I usually start cassandra and then use cassandra-cli to import a
schema. Is there any automated way to load a fixed schema when
cassandra starts automatically?
I have a test setup where i run cassandra on a single node. I have a
OS image packaged with cassandra and it automatically starts cassa
onths in the
> future.
>
> Ben
>
> On Fri, Dec 16, 2011 at 5:16 PM, Jeremiah Jordan
> wrote:
>>
>> You need to run repair on the node once it is back up (to get back the
>> data you just deleted). If this is happening on more than one node you
>> could have
We are running a 30 node 1.0.5 cassandra cluster running RHEL 5.6
x86_64 virtualized on ESXi 5.0. We are seeing Decorated Key assertion
error during compactions and at this point we are suspecting anything
from OS/ESXi/HBA/iSCSI RAID. Please correct me i am wrong, once a
node gets into this state
0
> 155320746 /opt/cassandra/data/system/HintsColumnFamily-tmp-hc-1107-Index.db
> java 8185 root 955u REG 8,32 0
> 155320747 /opt/cassandra/data/system/HintsColumnFamily-tmp-hc-1107-Data.db
>
> Going to try rolling back to 1.0.5 for the tim
We are using leveled compaction running cassandra 1.0.6. I checked
the data directory (/var/lib/cassandra/data) and i see these 0 bytes
tmp files.
What are these files?
thanks
Ramesh
-rw-r--r-- 1 root root0 Dec 14 17:15 uid-tmp-hc-106-Data.db
-rw-r--r-- 1 root root0 Dec 14 17:15
n JRE 1.6.29
thanks
Ramesh
On Mon, Dec 12, 2011 at 10:02 AM, Jason Wellonen
wrote:
> RHEL 6.1 and 6.2 with KVM. No file corruptions that I am aware of.
>
> Jason
>
> -Original Message-
> From: Ramesh Natarajan [mailto:rames...@gmail.com]
> Sent: Sunday, December 1
Hi,
We are currently testing cassandra in RHEL 6.1 64 bit environment
running on ESXi 5.0 and are experiencing issues with data file
corruptions. If you are using linux for production environment can you
please share which OS/version you are using?
thanks
Ramesh
ce it has been written, so this would
> suggest an external modification, typically some bit rot.
>
> In that case you don't have much other choice than removing
> the mentioned data file and run a repair.
>
> --
> Sylvain
>
> On Fri, Dec 9, 2011 at 1:37 PM, Ramesh Na
https://issues.apache.org/jira/browse/CASSANDRA-3579
thanks
Ramesh
On Tue, Dec 6, 2011 at 2:16 AM, Sylvain Lebresne wrote:
> Do you mind opening a ticket on
> https://issues.apache.org/jira/browse/CASSANDRA ?
>
> Thanks
>
> --
> Sylvain
>
> On Tue, Dec 6, 2011 at
; Sylvain
>
> On Tue, Nov 22, 2011 at 5:35 PM, Ramesh Natarajan wrote:
>> Hi,
>>
>> I have a 3 node cassandra cluster. I have RF set to 3 and do reads
>> and writes using QUORUM.
>>
>> Here is my initial ring configuration
>>
>> [root@CAP4-
Hi,
I have a 3 node cassandra cluster. I have RF set to 3 and do reads
and writes using QUORUM.
Here is my initial ring configuration
[root@CAP4-CNode1 ~]# /root/cassandra/bin/nodetool -h localhost ring
Address DC RackStatus State Load
OwnsToken
11342745
p columnFamilyKeyMap = new
> HashMap();
>
> So cFKM can't be null, and HashMap accomodates both null key and null
> value, so I'm not sure what there is to thorw NPE.
>
> On Tue, Nov 1, 2011 at 5:56 PM, Ramesh Natarajan wrote:
>> We have a 8 node cassandra cl
Here is my wish list -
I would love Cassandra to
- provide a efficient method to retrieve the count of columns for a
given row without resorting to read all columns and calculate the
count for a given row key.
- support auto increment column names - Column slice based query
doesn't take advant
llegal Capacity: -2
>would be great.
>
>--
>Sylvain
>
>On Wed, Oct 26, 2011 at 6:26 PM, Ramesh Natarajan wrote:
>> We are using the final 1.0.0.
>>
>> Thanks
>> Ramesh
>>
>> On Wed, Oct 26, 2011 at 11:16 AM, Sylvain Lebresne
>> wrote:
>>
have the full log for one of those node leading to the exception
>> that you could share? Not sure that'll help but who knows.
>>
>> --
>> Sylvain
>>
>> On Fri, Oct 21, 2011 at 4:34 PM, Ramesh Natarajan wrote:
>>> i am using size based compactio
environment?
Are there any known issues/interactions with compaction and updating column
family in 1.0?
Thanks
Ramesh
Ramesh Natarajan wrote:
>Looks like compaction for this column family stopped after some time.
>The last message for this column family in the system.log is
>
Looks like compaction for this column family stopped after some time.
The last message for this column family in the system.log is
INFO [MigrationStage:1] 2011-10-25 16:57:00,385 Migration.java (line
119) Applying migration 43f106c0-ff54-11e0--68877f281daf Update
column family to
org.apache.c
gt; include how you are configured in any JIRA you make, someone else was seeing
> a similar issue with compression turned on.
>
> -Jeremiah
>
> On Oct 14, 2011, at 1:13 PM, Ramesh Natarajan wrote:
>
>> What does the Load column in nodetool ring mean? From the output
>&g
ception with leveled compaction,
> is it what you are
> using too (to help narrow it down)? Also, are you using windows by any chance?
>
> --
> Sylvain
>
>
> On Thu, Oct 20, 2011 at 9:04 PM, Ramesh Natarajan wrote:
>> We are running a 8 node cassandra 1.0 cluster. We are
We are running a 8 node cassandra 1.0 cluster. We are seeing this
exception quite often. Any idea how to debug this issue?
java.lang.IllegalArgumentException: Illegal Capacity: -2
at java.util.ArrayList.(ArrayList.java:110)
at
org.apache.cassandra.db.DataTracker$View.newSSTables(
What does the Load column in nodetool ring mean? From the output
below it shows 101.62 GB. However if I do a disk usage it is about 6
GB.
thanks
Ramesh
[root@CAP2-CNode1 cassandra]#
~root/apache-cassandra-1.0.0-rc2/bin/nodetool -h localhost ring
Address DC RackStatus St
Lets assume I perform frequent insert & update on a column family..
Over a period of time multiple sstables will have this row/column
data.
I have 2 questions about how reads work in cassandra w.r.t. multiple SS tables.
-If you perform a query for a specific row key and a column name, does
it read
805
ReadRepair difference : 354774
thanks
Ramesh
On Wed, Oct 5, 2011 at 2:21 PM, Jonathan Ellis wrote:
> As explained in the link in my earlier reply, "Read Repair" just means
> "a replica was checked in the background," not that it was out of
> sync.
>
> On Wed, Oc
Yes Hinted Handoff is enabled. However I don't see any counters
raising against the HintedHandoff in the tpstats.
thanks
Ramesh
On Wed, Oct 5, 2011 at 2:10 PM, Mohit Anchlia wrote:
> Do you see any errors in the logs? Is your HH enabled?
>
> On Wed, Oct 5, 2011 at 12:00 PM, Ra
easing just means you were doing reads at < CL.ALL, and had
> the CF configured to perform RR.
>
> On Wed, Oct 5, 2011 at 12:37 PM, Ramesh Natarajan wrote:
>> I have a 12 node cassandra cluster running with RF=3. I have severl
>> clients ( all running on a single node ) c
What is Memtable Switch Count in the cfstats output?
thanks
Ramesh
table2json to take a look around
> * work out steps to reproduce and report it on Jira
> Hope that helps.
> -
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
> On 4/10/2011, at 11:30 AM, Ramesh Natarajan wrote:
>
I have a 12 node cassandra cluster running with RF=3. I have severl
clients ( all running on a single node ) connecting to the cluster (
fixed client - node mapping ) and try to do a insert, update , select
and delete. Each client has a fixed mapping of the row-keys and always
connect to the same
e it's
> easier to deal with failures. If you had 12 nodes half as expensive,
> for instance, losing one would be 1/12 of your capacity instead of
> 1/6.
>
> On Mon, Oct 3, 2011 at 9:47 PM, Ramesh Natarajan
> wrote:
> > I was reading an article @
> http://www.acunu.com/pro
wrote:
> Looks like you have unexpectedly large rows in your 1.0 cluster but
> not 0.8. I guess you could use sstable2json to manually check your
> row sizes.
>
> On Mon, Oct 3, 2011 at 5:20 PM, Ramesh Natarajan
> wrote:
> > It happens all the time on 1.0. It doesn
.0 regression."
>
> On Mon, Oct 3, 2011 at 5:00 PM, Ramesh Natarajan
> wrote:
> > We have about 5000 column family and when we run the nodetool cfstats it
> > throws out this exception... this is running 1.0.0-rc1
> > This seems to work on 0.8.6. Is this a bu
We have about 5000 column family and when we run the nodetool cfstats it
throws out this exception... this is running 1.0.0-rc1
This seems to work on 0.8.6. Is this a bug in 1.0.0?
thanks
Ramesh
Keyspace: system
Read Count: 28
Read Latency: 5.8675 ms.
Write Count: 3
I have 6 nodes in a cluster running RandonPartitioner with SimpleStrategy
and replication factor 3. Lets say we insert a column with
a QUORUM consistency.
Based on the md5 hash it decides to go to node 10.19.104.11. How does
cassandra pick the other 2 nodes? Is it sequential ( .12 and .13 ) or any
completed in 1 *microsecond* and 9
> write requests completed n 1 microsecond.
>
> Cheers
>
>
> -
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 4/10/2011, at 4:58 AM, Ramesh Natarajan wrote:
>
which I don't really understand why it's that high when swap is
>> disabled. Look at sar -r output too to make sure there are no swaps
>> occurring. Also, verify jna.jar is installed.
>>
>> On Mon, Oct 3, 2011 at 11:52 AM, Ramesh Natarajan
>> wrote:
&g
successful
> message in the logs.
>
> On Mon, Oct 3, 2011 at 10:36 AM, Ramesh Natarajan
> wrote:
> > We have 5 CF. Attached is the output from the describe command. We
> don't
> > have row cache enabled.
> > Thanks
> > Ramesh
> > Keyspace: MSA:
10:12 AM, Ramesh Natarajan
> wrote:
> > I am running a cassandra cluster of 6 nodes running RHEL6 virtualized by
> > ESXi 5.0. Each VM is configured with 20GB of ram and 12 cores. Our test
> > setup performs about 3000 inserts per second. The cassandra data
> partition
> &g
I am running a cassandra cluster of 6 nodes running RHEL6 virtualized by
ESXi 5.0. Each VM is configured with 20GB of ram and 12 cores. Our test
setup performs about 3000 inserts per second. The cassandra data partition
is on a XFS filesystem mounted with options
(noatime,nodiratime,nobarrier,l
I am running a cassandra 0.8.6 cluster. I started a clean test setup and run
my tests for a while. Later when I run cfstats and cfhistograms ( both ran
at the same time )
the values for Read/Write latency doesn't match. As per cfstats the
latency for read and write are 5.086 and 0.018 ms respec
Hi,
I am trying to use the range query to retrieve a bunch of columns in
reverse order. The API documentation has a parameter bool reversed which
should return the results when queried using keys in a reverse order.
Lets say my row has about 1500 columns with column names 1 to 1500, and I
query
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