We've been having issues where as soon as we start doing heavy writes (via
hadoop) recently, it really hammers 4 nodes out of 20. We're using random
partitioner and we've set the initial tokens for our 20 nodes according to the
general spacing formula, except for a few token offsets as we've re
thanks a lot!
On Mon, Aug 22, 2011 at 10:14 PM, Edward Capriolo wrote:
>
>
> On Mon, Aug 22, 2011 at 1:08 AM, Yan Chunlu wrote:
>
>> connect to cassandra-cli and issue the list my cf I got
>>
>> RowKey: comments_62559
>> => (column=76616c7565,
>> value=28286c70310a4c3236373632334c0a614c323637373
Could this ghost node be causing my hints column family to grow to this size?
I also crash after about 24 hours due to commit logs growth taking up all the
drive space. A manual nodetool flush keeps it under control though.
Column Family: HintsColumnFamily
SSTa
Oh, right: my plan didn't work, because schema changes aren't really
commitlog-ified. (So, commitlog replayed, but the schema didn't get
recreated to match its earlier state.)
Can you reproduce the old-fashioned way by sending the create + insert
commands, after nuking things?
On Mon, Aug 22, 20
0.8.4 seems to fail to load in the same way. When i deleted the data
directory, it appears to start up correctly, I see
INFO 23:30:44,067 JNA not found. Native methods will be disabled.
INFO 23:30:44,100 Loading settings from
file:/home/dave/apache-cassandra-0.8.4/conf/cassandra.yaml
INFO 23:
It's erroring out trying to load the schema itself, though, which
isn't supposed to happen.
On Mon, Aug 22, 2011 at 10:14 PM, Dave Brosius wrote:
> Sure i'll try that, but I'm pretty sure it was creating a column family
> without any column meta data (types), then, client.insert'ing a ByteBuffer
Sure i'll try that, but I'm pretty sure it was creating a column family
without any column meta data (types), then, client.insert'ing a
ByteBuffer that wasn't based on bytes from a String.getBytes call.
On 08/22/2011 11:09 AM, Jonathan Ellis wrote:
Yes, you can blow away both the data and co
Yes.
On Mon, Aug 22, 2011 at 6:58 PM, Hefeng Yuan wrote:
> We're using 0.8.1, and found the CQL count(*) is counting deleted columns,
> CLI doesn't have this issue. Is it a bug?
>
> cqlsh> select * from CF where key = 'foo';
> u'foo'
>
> cqlsh> select count(*) from CF where key = 'foo';
> (3,)
We're using 0.8.1, and found the CQL count(*) is counting deleted columns, CLI
doesn't have this issue. Is it a bug?
cqlsh> select * from CF where key = 'foo';
u'foo'
cqlsh> select count(*) from CF where key = 'foo';
(3,)
Shall I lower this or increase it? Or probably ask in this way, do we suggest
to let it run longer while using less CPU, or should we let it finish faster
with more CPU usage?
The problem we're facing is, with the default setting, they run slow and also
eat a lot of CPU in the meanwhile.
I'm th
Hello,
I'd like to try the cassandra tutorial example:
https://github.com/zznate/cassandra-tutorial
by following the readme.
After typing mvn -e exec:java -Dexec.args="get"
-Dexec.mainClass="com.datastax.tutorial.TutorialRunner"
I got the following errors.
Should I do something before the above
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-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 23/08/2011, at 3:18 AM, Rodrigo Hjort wrote
Lets start with something quick and simple, all standard Column Families…
Visitant CF
key: id
column name: property name
column value: property value
Visitant Sessions CF
key: visitant id
column name: session id
column value: none
Session CF
key: session_id
column_name: property value
colum
Not sure why it's different for the nodes at the end of the ring. But I'm going
to assume Quorum is working as expected and it's an artifact of the way the
ring ownership is calculated.
Cheers
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.co
After having done so many tries, I am not sure which log entries correspond
to what. However, there were many of this type:
WARN [CompactionExecutor:14] 2011-08-18 18:47:00,596 CompactionManager.java
(line 730) Index file contained a different key or row size; using key from
data file
And ther
Thanks for the reply.
On Mon, Aug 22, 2011 at 1:11 PM, Dominic Williams
wrote:
> Hi there, here's my tuppence!
> 1. Something to look at first:
>
> If you write two different values to the same column quickly in succession,
> if both writes go out with the same timestamp, then it is indeterminate
Hi there, here's my tuppence!
1. Something to look at first:
If you write two different values to the same column quickly in succession,
if both writes go out with the same timestamp, then it is indeterminate
which one wins i.e. write order doesn't necessarily matter.
2. Don't trust PayPal (anyo
I made some changes to my code base that uses cassandra. I went back
to using the "processed" column, but instead of using "0" or "1" I
decided to use "no" and "yes"
You can view the code here: http://pastebin.com/gRBC16e7
As you can see from the code, I perform an insert, get, check the
result,
unsubscribe
Specifically, look at compaction_throughput_mb_per_sec in cassandra.yaml
On Mon, Aug 22, 2011 at 12:39 AM, Ryan King wrote:
> You should throttle your compactions to a sustainable level.
>
> -ryan
>
> On Sun, Aug 21, 2011 at 10:22 PM, Hefeng Yuan wrote:
>> We just noticed that at one time, 4 nod
Yes, you can blow away both the data and commitlog directories and
restart, but can you try these first to troubleshoot?
1. make a copy of the commitlog directory
2. downgrade to 0.8 with no other changes, to see if it's something on
the new read path
2a. if 0.8 starts up then we will fix the read
On Mon, Aug 22, 2011 at 1:08 AM, Yan Chunlu wrote:
> connect to cassandra-cli and issue the list my cf I got
>
> RowKey: comments_62559
> => (column=76616c7565,
> value=28286c70310a4c3236373632334c0a614c3236373733304c0a614c3236373737304c0a614c3236373932324c0a614c3236373934364c0a614c3236383137314c
Hey, that´s awesome great! Keep on that work! I love it! :o)
2011/8/22 SebWajam
> And thank you for your feedback! :)
>
> --
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And thank you for your feedback! :)
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Hello all,
i have a SQL structure like this:
Visitant ( has several properties )
Visitant has many Sessions
Sessions ( has several properties )
Sessions has many Requests ( has several properties )
Sessions has many Events ( has several properties )
i have read a lot and still confused how to p
Hi,
Thanks for explaining: As I understood each node now only displays
it's local view of the the data it cotains, and not the global view
anymore.
One more question:
Why do the nodes at the end of the ring only show the % load from 2
nodes and not from 3?
We are always writing with quorum, so th
the cassandra-cli version I am using is shipped with the cassandra 0.7.4
package;
but I could get results by the column name "14np_20nl":
get mycf2[14np][14np_20nl];
On Mon, Aug 22, 2011 at 1:20 PM, Jonathan Ellis wrote:
> My guess: you're using an old version of the cli that isn't dealing
>
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