Forgive me if I send this email in the wrong place.
When I send email to cassandra mail list, gmail always block me. And who
should I contact for this problem.
This following is the response message:
Delivery to the following recipient failed permanently:
d...@cassandra.apache.org
On Sat, Apr 17, 2010 at 10:50, dir dir sikerasa...@gmail.com wrote:
What problems can’t it solve?
No flexible indices
No querying on non PK values
Not good for binary data (64mb) unless you chunck
Row contents must fit in available memory
Gary Dusbabek say: Row contents must fit in
On Sun, Apr 18, 2010 at 7:41 AM, Gary Dusbabek gdusba...@gmail.com wrote:
On Sat, Apr 17, 2010 at 10:50, dir dir sikerasa...@gmail.com wrote:
What problems can’t it solve?
No flexible indices
No querying on non PK values
Not good for binary data (64mb) unless you chunck
Row
sounds like http://wiki.apache.org/cassandra/FAQ#slows_down_after_lotso_inserts
On Sun, Apr 18, 2010 at 3:05 AM, Schubert Zhang zson...@gmail.com wrote:
Thanks Jonathan and Chris,
I am using 6u19 in above test:
[cassan...@nd1-rack0-cloud cassandra]$ java -version
java version 1.6.0_19
On Sun, Apr 18, 2010 at 8:26 AM, Brandon Williams dri...@gmail.com wrote:
On Sun, Apr 18, 2010 at 8:00 AM, Mason Hale ma...@onespot.com wrote:
This is a statement I wish I had run across sooner. Our first
implementation (which we're changing now) included some very big rows. We
ran into
Hi All,
This is a just quick post to announce OCM 0.6.0.
This release provides compatibility with Hector 0.6 and therefore
Cassandra 0.6. The API hasn't changed so all you need to do is
recompile your OCM Spec files using the latest version of the compiler
and use the latest version of the Base
thanks
- Reply message -
From: Charlie Mason charlie@gmail.com
Date: 周日, 4 月 18, 2010 11:03 下午
Subject: OCM 0.6 Released
To: user@cassandra.apache.org
Hi All,
This is a just quick post to announce OCM 0.6.0.
This release provides compatibility with Hector 0.6 and therefore
Hi Gary,
The main reason is that the compaction operation (removing deleted
values) currently requires that an entire row be read into memory.
Thank you for your explanation. But I still do not understand what do you
mean.
in my opinion, Actually the row contents must fit in available memory.
I'm a Cassandra noob trying to validate Cassandra as a viable alternative to
HBase (which we've been using for over a year) for our application. So far,
I've had no success getting Cassandra working with MapReduce.
My first step is inserting data into Cassandra. I've created a MapRed job
based
Hi.
I just downloaded Cassandra 0.6.0 and followed Getting Started tutorial.
When I try to start up Cassandra, I get following error message.
2010-04-18 20:53:39 UTC [hayas...@data-itb:~/app/apache-cassandra-0.6.0]$
./bin/cassandra -f
INFO 21:27:29,127 Auto DiskAccessMode determined to be mmap
When I made that statement, we were expecting to have fixed the issue within a
month or two... the fix has been dragged out significantly due to some
disagreements around implementation, but it is a problem that will still be
fixed in the near future.
-Original Message-
From: Mason
ColumnFamilyInputFormat no longer uses the fat client API, and instead uses
Thrift. There are still some significant problems with the fat client, so it
shouldn't be used without a good understanding of those problems.
If you still want to use it, check out contrib/bmt_example, but I'd
Where is the ColumnFamilyInputFormat that uses Thrift? I don't actually
have a preference about client, I just want to be consistent with
ColumnInputFormat.
On Sun, Apr 18, 2010 at 5:37 PM, Stu Hood stu.h...@rackspace.com wrote:
ColumnFamilyInputFormat no longer uses the fat client API, and
In 0.6.0 and trunk, it is located at
src/java/org/apache/cassandra/hadoop/ColumnFamilyInputFormat.java
You might be using a pre-release version of 0.6 if you are seeing a fat client
based InputFormat.
-Original Message-
From: Joost Ouwerkerk jo...@openplaces.org
Sent: Sunday, April
Just want to be clear, is it true that it really makes no difference if my
web application is asp.net or java or python, since the way we communicate
to Cassandra is via the Thrift generated interface?
Obviously if you run asp.net on windows, it is probably a VERY good idea to
be running
On Apr 18, 2010, at 5:33 PM, S Ahmed wrote:
Obviously if you run asp.net on windows, it is probably a VERY good idea to
be running cassandra on a linux box.
Actually, I'm not sure this is true. A few people have found Windows performs
fairly well with Cassandra, if I recall correctly.
If you are trying to run on machines with less than 1GB of memory, or
OS resource limits that prevent allocation of 1GB of memory, that is
what happens. You shouldn't be increasing -Xms, you should be
decreasing -Xmx. Try -Xms16M -Xmx500M.
b
On Sun, Apr 18, 2010 at 2:30 PM, Soichi Hayashi
On Fri, Apr 16, 2010 at 12:50 PM, Lee Parker l...@socialagency.com wrote:
This process is running on two clients each working on a separate part of
the mysql data which totals to about 70G. Each time I start it up, it will
work fine for about 1 hour and then it will crash the servers. The
Ah.. Thanks for the great tip!
I tried decreasing it and tried various combination (including the one you
have suggested) but I am still getting the same error message. Following is
the /prop/meminfo on the machine that I am using.
2010-04-18 23:56:54 UTC
You have a corrupt commitlogheader. The easiest fix is deleting the
commitlog segment in question.
I created https://issues.apache.org/jira/browse/CASSANDRA-999 to add
checksumming to the commitlog headers (to detect log segments that
didn't fsync cleanly), but that wouldn't help in your case
On Sun, Apr 18, 2010 at 4:30 PM, Soichi Hayashi hayas...@indiana.eduwrote:
INFO 21:27:29,482 Replaying
/home/hayashis/app/apache-cassandra-0.6.0/log/log.txt
java.lang.OutOfMemoryError: Java heap space
I'm not sure what log.txt might be, but based on the filename it is not a
Cassandra
I did regenerate the thrift bindings. What I have found in testing is that
the batch_mutate command occasionally sends bad data to thrift when i try to
insert a set of items with too many columns. I don't know if this is a
problem with PHP, or the thrift PHP library. I have found that a limit
Ha! Nice catch.
Yes, commitlog must be pointed to a directory that _only_ has
commitlog data in it.
On Sun, Apr 18, 2010 at 7:27 PM, Brandon Williams dri...@gmail.com wrote:
On Sun, Apr 18, 2010 at 4:30 PM, Soichi Hayashi hayas...@indiana.edu
wrote:
INFO 21:27:29,482 Replaying
commitlog must be pointed to a directory that _only_ has commitlog data in
it
This was exactly it.. I was outputting log4j.properties log on /log
directory which I have created to store commitlog - also. I apologize if
this is documented in the tutorial somewhere!
On Sun, Apr 18, 2010 at 9:07
Hot on the trails of 0.6.0 comes our latest, 0.6.1. This stable point
release contains a number of important bugfixes[1] and is a painless
upgrade from 0.6.0.
Enjoy!
[1]: http://bit.ly/9NqwAb (changelog)
--
Eric Evans
eev...@rackspace.com
Cheers
On Mon, Apr 19, 2010 at 10:04 AM, Jeff Hodges jhod...@twitter.com wrote:
It does, however, include a change the networking layout[1]. It's not
a simple rolling deploy. You will have to do a full cluster restart to
upgrade.
[1] https://issues.apache.org/jira/browse/CASSANDRA-969
--
Interesting, I'm just finding windows to be a pain, particular starting up
java apps. (I guess I just need to learn!)
How exactly would you startup Cassandra on a windows machine? i.e when the
server reboots, how will it run the java -jar cassandar ?
On Sun, Apr 18, 2010 at 7:35 PM, Joe Stump
With the 0.6.0 release, the windows cassandra.bat file errors out. There's a
bug filed for this already. There's a README or something similar in the
install directory, that tells you the basic CLI operations and explains the
basic data model.
On Sun, Apr 18, 2010 at 11:23 PM, S Ahmed
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