On Thu, Jun 14, 2012 at 7:04 PM, Greg Fausak wrote:
> But, I just attended a class on this. I thought that once I used my
> indices the remaining qualifications would be satisfied via a filtering
> method.
The actual rule is that you need to at least qualify one of the indexed column
with an EQU
Oh, the world of windows... sigh.
Thanks Aaron for the pointer.
On Mon, Jun 18, 2012 at 8:02 AM, aaron morton wrote:
> Has to do with the file name length on windows
> https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/config/Schema.java#L49
>
>
> Cheers
>
>
> -
> Where can I find parameters to control the SSTable files - e.g. their min/max
> sizes, etc.
It's not normally something you need to worry about.
The initial size of the files is not really controlled by settings. The data is
flushed to disk when either the commit log reaches a certain size, o
> It is also strange that although no data in Cassandra can fulfill the query
> conditions, but it takes more time if we have more data in Cassandra.
These log messages:
> DEBUG [ReadStage:89] 2012-06-17 20:17:26,958 SliceQueryFilter.java (line 123)
> collecting 0 of 5000:
> 7fff0
I am using 1.0.5 . The logs suggest that it was one single instance of
failure and I'm unable to reproduce it.
>From the logs, In a span of 30 seconds, heap usage went from 4.8 gb to
8.8 gb With stop-the-world gc running 20 times. I believe that parNew
was unable to clean up memory due to some prob
Assuming you have been running repair, it' can't hurt.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 17/06/2012, at 4:06 AM, Raj N wrote:
> Nick, do you think I should still run cleanup on the first node.
>
> -Rajesh
>
> On Fri, Jun 15
> I'm in a pseudo-deadlock
BOOM BOOM ! :)
> (N.B. The updates requires a read of current value before the update write.
> Otherwise counter column can be used, but in my opinion the problem still
> remain).
Writes in the cassandra server do not require a read.
> My simple question is: what h
Check are using framed transport on the client.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 16/06/2012, at 2:40 AM, Jim Ancona wrote:
> It's hard to tell exactly what happened--are there other messages in your
> client log before the
Cross platform clusters are not really supported.
That said it sounds like a bug. If you can create some steps to reproduce it
please create a ticket here https://issues.apache.org/jira/browse/CASSANDRA it
may get looked it.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmor
cassandra 1.1.1 ships with concurrentlinkedhashmap-lru-1.3.jar
row_cache_size_in_mb starts life as an int but the byte size is stored as a
long
https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/service/CacheService.java#L143
Cheers
-
Aaron Morton
Fre
Has to do with the file name length on windows
https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/config/Schema.java#L49
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 15/06/2012, at 6:32 AM, Tharindu Mathew wro
> So, my main primary key is on the ac_c column, text, and
> the secondary composite key is on ac_creation, which is a date. These
> queries perform correctly:
In your CF there is only one primary key (aka row key), it is a composite of
ac_c and ac_creation.
> select * from at_event_ac_c where a
You could also try adding some logging in the client to track down the exactly
where the delay is. If it is in waiting for the socket to open on the server or
say managing the connection client side.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickl
Writing to a super column family does not involve deserialisation, other than
writing to the commit log it is an in memory operation.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 15/06/2012, at 3:36 AM, Greg Fausak wrote:
> Derek,
>
>
http://wiki.apache.org/cassandra/FAQ#dropped_messages
https://www.google.com/#q=cassandra+dropped+messages
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 15/06/2012, at 12:54 AM, Poziombka, Wade L wrote:
> INFO [ScheduledTasks:1] 2012-06
Can you please create a ticket on
https://issues.apache.org/jira/browse/CASSANDRA
Please include:
* CF definition including the bloom_filter_fp_chance
* If the data was upgraded from a previous version of cassandra.
* The names of the files that were being compacted.
As a work around you can t
> Row key is a combo of 2 uuid, the first it's the user's uuid, if i want a
> select of all the watchdog entrys of a user.how can i do? is it
> possible? I justk know user uuid, the other part of key is unknow uuid.
No.
You would be doing a range scan (from key foo to key blah) and would
Hi All,
I am a getting started with Cassandra and have been reading the O'Reilly Book
and some other documentation.
I understand that data is persisted in SSTable files.
Where can I find parameters to control the SSTable files - e.g. their min/max
sizes, etc.
I looked up http://wiki.apache.org/
Not commenting on the GC advice but Cassandra memory usage has improved a lot
since that was written. I would take a look at what was happening and see if
tweeking Cassandra config helped before modifying GC settings.
> "GCInspector.java(line 88): Heap is .9934 full." Is this expected? or
> shou
Some docs here http://www.datastax.com/docs/1.0/initialize/index
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 14/06/2012, at 8:14 AM, Leonid Ilyevsky wrote:
> Before going into complex clustering topologies, I would like to try the most
Why do you want to do that ?
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 14/06/2012, at 7:43 PM, Ambes Hagos wrote:
> Dear all,
> I am using cassandra as distributed data base.
> I want to register my cluster in a zookeeper.
> Do you h
Hi
After I change log level to DEBUG, I found some log.
Although we don't have traffic to Cassandra, but we have scheduled the
task to perform the sliceQuery.
We use time-stamp as the index, we will perform the query by every second
to check if we have tasks to do.
After 24 hours, we h
Hi
After running load testing for 24 hours(insert, update and delete), now
no new traffic to Cassandra, but Cassnadra shows still have high load(CPU
usage), from the system.log, it shows it always perform GC. I don't know
why it work as that, seems memory is not low.
Here is some configuration
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