Hi everyone,
Can anyone throw a light at the benefits of using framed transport over
non-framed transport?
We are trying to sum up some performance tuning approaches of cassandra in our
project.
Can framed transport be counted?
Thanks
2010-05-08
Hi,
In a cassandra cluster, when issueing ring command on every nodes, some can
show all nodes in the cluster but some can only show some other nodes.
All nodes share the same seed list.
And even some of the nodes in the seed list have this problem.
Restarting the problematic nodes won't solve i
his
Gossiper.java (line 576) Node /192.168.34.30 is now part of the cluster
Are all the nodes listed?
aaron
On 30 Jun 2010, at 22:50, 王一锋 wrote:
Hi,
In a cassandra cluster, when issueing ring command on every nodes, some can
show all nodes in the cluster but some can only show some ot
bject: Re: live nodes list in ring
>
>
>
> At start up do you see log lines like this
>
>
>
> Gossiper.java (line 576) Node /192.168.34.30 is now part of the cluster
>
>
>
> Are all the nodes listed?
>
>
>
> aaron
>
> On 30 Jun 2010, at 22:50, 王一锋
576) Node /192.168.34.30 is now part of the cluster
Are all the nodes listed?
aaron
On 30 Jun 2010, at 22:50, 王一锋 wrote:
Hi,
In a cassandra cluster, when issueing ring command on every nodes, some can
show all nodes in the cluster but some can only show some other nodes.
All nodes share
Hi,
Has anyboy done any memory usage analysis for cassandra?
How much memory does cassandra need to manager 300G of data load? How much
extra memory will be needed when doing compaction?
Regarding mmap, memory usage will be determined by the OS so it has nothing to
do with the heap size of JV
In my cluster, I have set both KeysCached and RowsCached of my column family on
all nodes to "0",
but it still happened that a few nodes crashed because of OutOfMemory
(from the gc.log, a full gc wasn't able to free up any memory space),
what else can be consuming the heap?
heap size is 10G an
into node memory
It could be?
/Justus
Från: 王一锋 [mailto:wangyif...@aspire-tech.com]
Skickat: den 20 juli 2010 08:48
Till: user
Ämne: What is consuming the heap?
In my cluster, I have set both KeysCached and RowsCached of my column family on
all nodes to "0",
but it still happened th
： Jonathan Ellis
发送时间： 2010-07-20 19:26:11
收件人： user
抄送：
主题： Re: What is consuming the heap?
you should post the full stack trace.
2010/7/20 王一锋 :
> In my cluster, I have set both KeysCached and RowsCached of my column family
> on all nodes to "0",
> but it still happened that
So the bloom filters reside in memory completely?
We do have a lot of small values, hundreds of millions of columns in a
columnfamily.
I count the total size of *-Filter.db files in my keyspace, it's
436,747,815bytes.
I guess this means it won't consume a major part of 10g heap space
2010-07
9:41 PM, 王一锋 wrote:
So the bloom filters reside in memory completely?
We do have a lot of small values, hundreds of millions of columns in a
columnfamily.
I count the total size of *-Filter.db files in my keyspace, it's
436,747,815bytes.
I guess this means it won't consume a ma
Yes, I'm running with defaults settings otherwise.
For cache sizes, I've tried '0' for non-cached, '1' for full cached and a fixed
value of 50, for KeysCached, RowsCached was using default everytime.
So I don't think the problem is about the cache.
Concurrent read was 32, write was 64
I also t
Yes, we are doing a lot of inserts.
But how can CASSANDRA-1042 cause an OutOfMemory?
And we are using multigetSlice(). We are not doing any get_range_slice() at all.
2010-07-23
发件人： Jonathan Ellis
发送时间： 2010-07-21 21:17:21
收件人： user
抄送：
主题： Re: Re: What is consuming the heap?
On T
The version we are using is 0.6.1
2010-07-23
发件人： 王一锋
发送时间： 2010-07-23 09:38:15
收件人： user
抄送：
主题： Re: Re: Re: What is consuming the heap?
Yes, we are doing a lot of inserts.
But how can CASSANDRA-1042 cause an OutOfMemory?
And we are using multigetSlice(). We are not doing any
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