Okay. Got that. Thanks.
Bringing back just one of the nodes solved it.
What I was keen on knowing was if there exists a way to know which keys reside
on which node. Like a 'nodetool column.path' and it prints the nodelist that
the column path resides on :). I have HH disabled for some other
The code for nodetool appears to just pass the host value through to the
NodeProbe. Was there anything else in the stack trace ?
If you use the host name of the machine rather than ip what happens?
cassandra-env.sh includes a link to this page about getting JMX running with
firewalls
On Dec 14, 2010, at 2:29 AM, Brandon Williams wrote:
On Mon, Dec 13, 2010 at 6:43 PM, Daniel Doubleday daniel.double...@gmx.net
wrote:
Oh - well but I see that the coordinator is actually using its own score for
ordering. I was only concerned that dropped messages are ignored when
Peter, Jonathon - thank you for your replies.
I should probably have repeated myself in the body, but as I
mentioned in the subject line, we're running Sun Java 1.6.
On 10 December 2010 18:37, Peter Schuller peter.schul...@infidyne.com wrote:
Memory-mapped files will account for both
On Dec 12, 2010, at 17:21, Jonathan Ellis wrote:
http://www.riptano.com/docs/0.6/troubleshooting/index#nodes-are-dying-with-oom-errors
I can rule out the first 3. I was running cassandra with default settings, i.e.
1GB heap and 256M memtable. So, with 3 memtables+1GB the JVM should run with
Pig seems to think my keyspace doesn't exist. I'm connecting to a remote
cassandra instance configured in the environment variables
PIG_RPC_PORT and PIG_INITIAL_ADDRESS
(an ip address)
I get the following backend logged output...
**
On Tue, 2010-12-14 at 11:06 +, Jedd Rashbrooke wrote:
JNA is something I'd read briefly about a while back, but now
it might be something I need to explore further. We're using
Cassandra 0.6.6, and our Ubuntu version offers a packaged
release of libjna 3.2.3-1 .. rumours on the
Hi has anyone noticed that the documentation for the Cassandra Class is gone
from the website?
http://blog.evanweaver.com/2010/12/06/cassandra-0-8/
I was wondering if there's a way for me to count how many rows exist inside a
Column Family and a way to erase the contents of that Column Family
On Dec 14, 2010, at 15:31, Timo Nentwig wrote:
On Dec 14, 2010, at 14:41, Jonathan Ellis wrote:
This is A row has grown too large section from that troubleshooting guide.
Why? This is what a typical row (?) looks like:
[defa...@test] list tracking limit 1;
---
RowKey:
Thanks.
It is very helpful.
I think I'd like to write to the same column.
Would you please give me more details about your last sentence? For example,
why can't I use locking mechanism inside of cassandra?
Thanks.
Alvin
2010/12/13 Aaron Morton aa...@thelastpickle.com
In your example is a
Memory-mapped files will account for both virtual and, to the extent
that they are resident in memory, to the resident size of the process.
This bears further investigation. Would you consider a 3GB overhead
on a 4GB heap a possibility? (From a position of some naivety, this
seems a bit
I can rule out the first 3. I was running cassandra with default settings,
i.e. 1GB heap and 256M memtable. So, with 3 memtables+1GB the JVM should run
with 1.75G (although http://wiki.apache.org/cassandra/MemtableThresholds
considers to increase heap size only gently). Did so. 4GB machine
java.lang.OutOfMemoryError: Java heap space
at java.nio.HeapByteBuffer.init(HeapByteBuffer.java:39)
at java.nio.ByteBuffer.allocate(ByteBuffer.java:312)
at
org.apache.cassandra.utils.FBUtilities.readByteArray(FBUtilities.java:261)
at
On Dec 14, 2010, at 19:38, Peter Schuller wrote:
For debugging purposes you may want to switch Cassandra to standard
IO mode instead of mmap. This will have a performance-penalty, but the
virtual/resident sizes won't be polluted with mmap():ed data.
Already did so. It *seems* to run more
Hi
I'm sorry - don't want to be a pain in the neck with source questions. So
please just ignore me if this is stupid:
Isn't org.apache.cassandra.service.ReadResponseResolver suposed to throw a
DigestMismatchException if it receives a digest wich does not match the digest
of a read message?
The stack trace doesn't make sense relative to what I get checking out
0.6.6. Are you *sure* this is 0.6.6, without patches or other changes?
Oh, sorry, the original poster of this thread was/is actually using 0.6, I am
(as mentioned in other posts) actually on 0.7rc2. Sorry that I didn't
I just uncommented the GC JVMOPTS from the shipped cassandra start script and
use Sun JVM 1.6.0_23. Hmm, but these GC tuning options are also
uncommented. I'll comment them again and try again.
Maybe I was just too quick trying to mentally parse it and given the
jumbled line endings. You're
For debugging purposes you may want to switch Cassandra to standard
IO mode instead of mmap. This will have a performance-penalty, but the
virtual/resident sizes won't be polluted with mmap():ed data.
Already did so. It *seems* to run more stable, but it's still far off from
being stable.
I posted mostly as a heads up for others using similar profiles (4GB
heap on ~8GB boxes) to keep an eye out for. I expect a few people,
particularly if they're on Amazon EC2, are running this type of setup.
On the other hand, mum always said I was unique. ;)
So, now that I get that we
Correct. https://issues.apache.org/jira/browse/CASSANDRA-1830 is open to
fix that. If you'd like to review the patch there, that would be very
helpful. :)
On Tue, Dec 14, 2010 at 1:55 PM, Daniel Doubleday
daniel.double...@gmx.netwrote:
Hi
I'm sorry - don't want to be a pain in the neck with
On Tue, Dec 14, 2010 at 7:11 AM, Amin Sakka, Novapost
amin.sa...@novapost.fr wrote:
Thanks for your answers, I have checkout the 0.7 branch but still having
troubles:
*init_() takes at least 3 arguments (2 given)*
Are you using the 0.7 branch of telephus too?
-Brandon
Makes perfect sense thanks, how can I set the Count limit for an specific
Column Family?
On Dec 14, 2010, at 3:47 PM, Peter Schuller wrote:
Hi i'm using Cassandra 0.6.8 and Fauna, I'm running a batch to populate my
db and for some reason every time it gets to a 100 records it stops no error
(Btw I said row count in my response; that was a poor choice of
words given that row has a specific meaning in Cassandra. I meant
column count.)
Makes perfect sense thanks, how can I set the Count limit for an specific
Column Family?
Looks like you can pass a :count option to get() (I just
If it helps, I also found quite a few of these in the logs
org.apache.cassandra.db.UnserializableColumnFamilyException: Couldn't find
cfId=224101
However a single cassandra instance locally (OSX, 1.6.0_22, mmap) runs just
perfect for
hours. No exceptions, no OOM.
Given that these
There is a truncate() function on the ruby api if you require Cassandra/0.7
this can truncate all the data in a CF. It will call the truncate function on
the thrift api.
I do not know of a precise way to get a count of rows. There is a function to
count the number of columns, see
There's an estimateKeys() function exposed via JMX that will give you an
approximate row count for the node. In jconsole this shows up under
o.a.c.db - ColumnFamilies - Keyspace - CF - Operations.
There's not a precise way to count rows other than to do a
get_range_slices() over the entire CF,
Hello,
I'm using cassandra 0.7.0-rc2. When I tried to get column contents in a
super column of Super CF like below;
] get myCF['key']['scName'];
the client reply
supercolumn parameter is not optional for super CF user
It seemed to work in cassandra-0.7.0-beta2, if my memory is not wrong.
The
This is probably because rmi code jmx uses to listen detected wrong address.
To fix this add the following to cassandra nodes startup script instances:
-Djava.rmi.server.hostname=127.0.0.1
(change 127.0.0.1 to actual internal address of cassandra node)
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