Hi Andrey,
while the data values you generated might be following a true random
distribution, your row key, UUID, is not (because it is created on the same
machines by the same software with a certain window of time)
For example, if you were using the UUID class in Java, these would be
composed
Hi Dean,
Thank you for your reply, i appreciate the help. I managed to get my data
model in cassandra and already inserted data and ran the query, but don't
yet have enough data to do correct benchmarking. I'm now trying to load a
huge amount of data using SSTableSimpleUnsortedWriter cause doing
Thanks, Aaron and Tim
Yes. I am trying to decommision a seed node. Looks like the only way to prevent
a seed node automatically join the previous cluster on backup is to change its
cluster_name
Zaili Xu
From: aaron morton [mailto:aa...@thelastpickle.com]
Sent: Monday, October 01, 2012 5:34 PM
The Cassandra team is pleased to announce the release of Apache Cassandra
version 1.0.12.
Cassandra is a highly scalable second-generation distributed database,
bringing together Dynamo's fully distributed design and Bigtable's
ColumnFamily-based data model. You can read more here:
Good evening,
Today i managed to get a small cluster running of 2 computers. I also
managed to get my data model working and are able to import sstables
created with SSTableSimpleUnsortedWriter with sstableloader.
The only problem is when i try to use the composite key in my datamodel,
after i
Mike
Mike Li
Lead Database Engineer
Thomson Reuters
Phone: 314-468-8128
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sender, except
It was my first thought.
Then I md5 uuid and used the digest as a key:
MessageDigest md = MessageDigest.getInstance(MD5);
//in the loop
UUID uuid = UUID.randomUUID();
byte[] bytes = md.digest(asByteArray(uuid));
the result is exactly the same, first node takes 66%, second 33% and
third one is
I have been looking to see if there are any schema change management tools
for Cassandra. I have not come across any so far. I figured I would check
to see if anyone can point me to something before I start trying to
implement something on my own. I have used liquibase (
http://www.liquibase.org)
Not that I know of. I've always been really strict about dumping my
schemas (to start) and keeping my changes in migration files. I don't do a
ton of schema changes so I haven't had a need to really automate it.
Even with MySQL I never bothered.
Jon
On Thu, Oct 4, 2012 at 6:27 PM, John Sanda
For the project I work on and for previous projects as well that support
multiple upgrade paths, this kind of tooling is a necessity. And I would
prefer to avoid duplicating effort if there is already something out there.
If not though, I will be sure to post back to the list with whatever I wind
Awesome - keep me posted.
Jon
On Thu, Oct 4, 2012 at 6:42 PM, John Sanda john.sa...@gmail.com wrote:
For the project I work on and for previous projects as well that support
multiple upgrade paths, this kind of tooling is a necessity. And I would
prefer to avoid duplicating effort if there
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