Benjamin,
It is not difficult to stack thousands of SSTables.
In a heavy inserting (many client threads), the memtable flush (generate new
sstable) is fren
On Mon, Jun 14, 2010 at 2:03 AM, Benjamin Black b...@b3k.us wrote:
On Sat, Jun 12, 2010 at 7:46 PM, Anty anty@gmail.com wrote:
Benjamin and Jonathan,
It is not difficult to stack thousands of small SSTables.
In a heavy inserting (many client threads), the memtable flush (generate new
sstable) is frequent (e.g. one in 30s).
The compaction only run in a single thread and is CPU bound. Consider the
compactionManager is
(adding dev@)
(2) Can we implement multi-thread compaction?
I think this is the only way to scale. Or at least to implement
concurrent compaction (whether it is by division into threads or not)
of multiple size classes. As long as the worst-case compactions are
significantly slower than
On Sun, Jul 18, 2010 at 2:45 AM, Schubert Zhang zson...@gmail.com wrote:
In a heavy inserting (many client threads), the memtable flush (generate new
sstable) is frequent (e.g. one in 30s).
This is a sign you should increase your memtable thresholds, btw. If
you wrote out larger sstables,
UnavailableException means the node(s) with the requested data are
down. A sub-case of this is when no nodes at all are known, which may
be what you are seeing.
On Sat, Jul 17, 2010 at 10:00 PM, Mubarak Seyed mubarak.se...@gmail.com wrote:
I am trying to load data using
Agree to Peter Schuller.
On Sun, Jul 18, 2010 at 8:40 PM, Jonathan Ellis jbel...@gmail.com wrote:
On Sun, Jul 18, 2010 at 2:45 AM, Schubert Zhang zson...@gmail.com wrote:
In a heavy inserting (many client threads), the memtable flush (generate
new
sstable) is frequent (e.g. one in 30s).
I didn't find in the documentation a way to configure message logging
that I'm looking for, so I appologize if this is a trivial question.
Is there a simple guide to configuring logging options in Cassandra?
I saw references to output.log, transactions log. I deduced from some
other post here that
On Sun, Jul 18, 2010 at 5:28 PM, osishkin osishkin osish...@gmail.com wrote:
I didn't find in the documentation a way to configure message logging
that I'm looking for, so I appologize if this is a trivial question.
Is there a simple guide to configuring logging options in Cassandra?
I saw
Up
On Sat, Jun 5, 2010 at 4:30 PM, Anty anty@gmail.com wrote:
Hi:All
in the code of SSTableReader.java
private static final ReferenceQueueSSTableReader finalizerQueue = new
ReferenceQueueSSTableReader()
{{
Runnable runnable = new Runnable()
{
public
I was using single node and was running ClientOnlyExample from the same
machines, heard from word_count README that
i can use its storage-conf.xml to alias localhost to 127.0.0.2 and
ListenAddress can be 127.0.0.2 and seed can be 127.0.0.1.
Looks like ClientOnlyExample starts itself up as
If I have problems with never ending bootstraping I do the following. I try
each one if it doesn't help I try the next. It might not be the right thing
to do but it worked for me.
1. Restart the bootstraping node
2. If I see streaming 0/ I restart the node and all the streaming nodes
3.
Hi Jonathan,
Could you provide info about the special case where a minor compaction,
also
happens to be a major one?
On Wed, May 19, 2010 at 2:29 PM, Jonathan Ellis jbel...@gmail.com wrote:
No. (Except in the special case where a minor compaction, also
happens to be a major one.)
On Tue,
Hi everyone,
I am new to Cassandra and wanted to try and start learning Cassandra. I have
database background. I am fully exposed and have full command on Netezza,
Oracle, MySQL, Sybase, SQL etc basically all the relational databases.
As Cassandra is gaining popularity day by day by its amazing
Yeah, I tried all that already and it didn't seem to work, no new nodes
will bootstrap, which makes me think there's some saved state somewhere,
preventing a new node from bootstrapping. I think maybe the Location
sstables? Is it safe to nuke those on all hosts and restart everything?
(I just
read the wiki, read about nosql in general.
download and install it, play with it.
browse the source code.
read the bigdata paper by google, dynamo by amazon.
On Sun, Jul 18, 2010 at 2:46 PM, sonia gehlot sonia.geh...@gmail.comwrote:
Hi everyone,
I am new to Cassandra and wanted to try and
On Sun, Jul 18, 2010 at 11:29 AM, Mubarak Seyed mubarak.se...@gmail.com wrote:
Looks like ClientOnlyExample starts itself up as Read-Only node and hence
can't write, is it true?
Yes, as the name implies.
I tried starting node from
bin/cassandra (it did with bind to Thrift Address
There isn't much to provide; if you only have 3 sstables on your
system, for instance, and they get compacted together, it will still
be a major compaction and result in tombstones being removed.
On Sun, Jul 18, 2010 at 1:27 PM, Schubert Zhang zson...@gmail.com wrote:
Hi Jonathan,
Could you
Start with the recommended articles on
http://wiki.apache.org/cassandra/ArticlesAndPresentations
On Sun, Jul 18, 2010 at 1:46 PM, sonia gehlot sonia.geh...@gmail.com wrote:
Hi everyone,
I am new to Cassandra and wanted to try and start learning Cassandra. I have
database background. I am fully
Or perhaps this one. This is the Cassandra paper from the guys at FB.
http://www.cs.cornell.edu/projects/ladis2009/program.htm#session3
On Sun, Jul 18, 2010 at 1:21 PM, Jonathan Ellis jbel...@gmail.com wrote:
Start with the recommended articles on
Which is bullet #4 on the list I linked. :)
On Sun, Jul 18, 2010 at 5:31 PM, Bill Hastings bllhasti...@gmail.com wrote:
Or perhaps this one. This is the Cassandra paper from the guys at FB.
http://www.cs.cornell.edu/projects/ladis2009/program.htm#session3
On Sun, Jul 18, 2010 at 1:21 PM,
Is there a link available for the Cassandra Summit in SF??
From: Eben Hewitt [mailto:eben.hew...@gmail.com]
Sent: Sunday, July 18, 2010 5:02 PM
To: user@cassandra.apache.org
Subject: Re: Newbie to cassandra
Hi Sonia
If you're still interested after the reading and want something more
Summit: http://cassandrasummit2010.eventbrite.com/
Trainings in SF (day after Summit), NYC, Denver, Seattle:
http://www.eventbrite.com/org/474011012?s=1848277
On Sun, Jul 18, 2010 at 7:07 PM, Dwight Smith
dwight.sm...@alcatel-lucent.com wrote:
Is there a link available for the Cassandra Summit
Thanks for the info. Very helpful in validating what I've been seeing. As for
the scaling limit...
The above was single node testing. I'd expect to be able to add nodes and
scale throughput. Unfortunately, I seem to be running into a cap of 21,000
reads/s regardless of the number of
Hi,
I want to implement goods search with cassandra; and I have some confusings.
Can someone help me out?
The case is that:
There are about 1 million shops, every shop with about 10,000 goods, every
goods with property like title, price etc..
The search is like give me 10 goods in a specific
On Sun, Jul 18, 2010 at 8:45 PM, Oren Benjamin o...@clearspring.com wrote:
Thanks for the info. Very helpful in validating what I've been seeing. As
for the scaling limit...
The above was single node testing. I'd expect to be able to add nodes
and scale throughput. Unfortunately, I seem
Currently nova, the openstack's (http://openstack.org) software for an open
cloud server implementation uses redis. In the #openstack IRC channel, there
was talk of abstracting the data storage model out. They are thinking that
perhaps they will consider other options as it is going to be
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