If you do that same get again, is the column still being returned? (days
later)
-Jeremiah
On Thu, May 23, 2013 at 6:16 AM, Tamar Fraenkel ta...@tok-media.com wrote:
Hi!
TTL was set:
[default@HLockingManager] get
HLocks['/LockedTopic/31a30c12-652d-45b3-9ac2-0401cce85517'];
=
If you have any data that you wrote to DC2, since the last time you ran repair,
you should probably run repair to make sure that data made it over to DC1, if
you never wrote data directly to DC2, then you are correct you don't need to
run repair.
You should just need to update the schema, and
That is fine. You just have to be careful that you haven't already inserted
data which would be rejected by the type you update to, as a client will have
issues reading that data back.
-Jeremiah
On Nov 11, 2012, at 4:09 PM, Kevin Burton rkevinbur...@charter.net wrote:
What happens when you
What is the output of nodetool ring? Does the cluster actually think your node
is in DC1?
-Jeremiah
On May 26, 2012, at 6:36 AM, Cyril Auburtin wrote:
I get the same issue on Cassandra 1.1:
create keyspace ks with strategy_class = 'NetworkTopologyStrategy' AND
strategy_options ={DC1:1};
The limitation is because number of columns could be equal to number of rows.
If number of rows is large this can become an issue.
-Jeremiah
From: David Vanderfeesten [feest...@gmail.com]
Sent: Wednesday, May 16, 2012 6:58 AM
To: user@cassandra.apache.org
Open JDK is java 1.7. Once Cassandra supports Java 1.7 it would most likely
work on Open JDK, as the 1.7 Open JDK really is the same thing as Oracle JDK
1.7 without some licensed stuff.
-Jeremiah
On May 11, 2012, at 10:02 PM, ramesh wrote:
I've had problem downloading the Sun (Oracle) JDK
Slice deletes are not supported currently. It is being worked on.
https://issues.apache.org/jira/browse/CASSANDRA-3708
-Jeremiah
On May 14, 2012, at 12:18 PM, Roland Mechler wrote:
I have a table with a 3 part composite key and I want to delete rows based on
the first 2 parts of the key.
You have to use nodetool move to change the token after the node has started
the first time. The value in the config file is only used on first startup.
Unless you were using RF=3 on your 3 node ring, you can't just start with a new
token without using nodetool. You have to do move so that
He says he disabled JNA. You can't mmap without JNA can you?
On Apr 9, 2012, at 4:52 AM, aaron morton wrote:
see http://wiki.apache.org/cassandra/FAQ#mmap
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.comhttp://www.thelastpickle.com/
On
So Cassandra may or may not be faster than your current system when you have a
couple connections. Where it is faster, and scales, is when you get hundreds
of clients across many nodes.
See:
http://techblog.netflix.com/2011/11/benchmarking-cassandra-scalability-on.html
With 60 clients running
Right, it affects every version of Cassandra from 0.8 beta 1 until the Fix
Version, which right now is None, so it isn't fixed yet...
From: Avi-h [avih...@gmail.com]
Sent: Tuesday, April 03, 2012 5:23 AM
To: cassandra-u...@incubator.apache.org
Subject:
The server side compression can compress across columns/rows so it will most
likely be more efficient.
Whether you are CPU bound or IO bound depends on your application and node
setup. Unless your working set fits in memory you will be IO bound, and in
that case server side compression helps
Is that 80% with compression? If not, the first thing to do is turn on
compression. Cassandra doesn't behave well when it runs out of disk space.
You really want to try and stay around 50%, 60-70% works, but only if it is
spread across multiple column families, and even then you can run
There is no such thing as pure insert which will give an error if the thing
already exists. Everything is really UPDATE OR INSERT. Whether you say
UPDATE, or INSERT, it will all act like UPDATE OR INSERT, if the thing is
there it get over written, if it isn't there it gets inserted.
If you have the disck space you can just copy all the data files from the
snapshot onto the dev node, renaming any with conflicting names. Then bring up
the dev node and it should see the data. you can then compact to merge and
drop all the duplicate data.
You can also use the sstable loader
You can also use any network/server monitoring tool which can talk to JMX. We
are currently using vFabric Hyperic's JMX plugin for this.
IIRC there are some cacti and nagios scripts on github for getting the data
into those.
-Jeremiah
From: R. Verlangen
You need to create the tombstone in case the data was inserted without a
timestamp at some point.
-Jeremiah
From: Radim Kolar [h...@filez.com]
Sent: Monday, March 19, 2012 4:48 PM
To: user@cassandra.apache.org
Subject: Re: repair broke TTL based
No,
Cassandra doesn't support atomic counters. IIRC it is on the list of things
for 1.2.
-Jeremiah
From: Tamar Fraenkel [ta...@tok-media.com]
Sent: Monday, March 19, 2012 1:26 PM
To: cassandra-u...@incubator.apache.org
Subject: Hector counter question
Hi!
Is
I would guess more aggressive compaction settings, did you update rows or
insert some twice?
If you run major compaction a couple times on the 0.8.1 cluster does the data
size get smaller?
You can use the describe command to check if compression got turned on.
-Jeremiah
Right, so until the new CQL stuff exists to actually query with something smart
enough to know about composite keys , You have to define and query on your
own.
Row Key = UUID
Column = CompositeColumn(string, string)
You want to then use COLUMN slicing, not row ranges to query the data. Where
?
[Edit: corrected to a question]
Then I can block the insertion of data until then.
On Thu, Mar 1, 2012 at 4:33 AM, Jeremiah Jordan
jeremiah.jor...@morningstar.com
mailto:jeremiah.jor...@morningstar.com wrote:
The error is that the specified colum family
You need to make sure your clients are reading using LOCAL_* settings so
that they don't try to get data from the other data center. But you
shouldn't get errors while replication_factor is 0. Once you change the
replication factor to 4, you should get missing data if you are using
LOCAL_*
There is a requirement that all nodes have a unique token. There is
still one global cluster/ring that each node needs to be unique on. The
logically seperate rings that NetworkTopologyStrategy puts them into is
hidden from the rest of the code.
-Jeremiah
On 03/05/2012 05:13 AM, Hontvári
You might check out some of the stuff Netflix does with their Cassandra
backup, and Cassandra ETL tools.:
http://techblog.netflix.com/2012/02/aegisthus-bulk-data-pipeline-out-of.html
http://techblog.netflix.com/2012/02/announcing-priam.html
-Jeremiah
On 02/29/2012 11:04 AM, Alexandru Sicoe
The error is that the specified colum family doesn't exist. If you
connect with the CLI and describe the keyspace does it show up? Also,
after adding a new column family programmatically you can't use it
immediately, you have to wait for it to propagate. You can use calls to
describe schema to
I am going to be doing a trial run of my Pycon talk about setting up a
development instance of Cassandra and accessing it from Python (Pycassa
mostly, some thrift just to scare people off of using thrift) for a
Chicago Cassandra Meetup. Anyone in Chicago feel free to come by. The
talk is
Either one works fine. Setting to may cause you less headaches as
you won't have to deal with tombstones. Deleting a non existent column
is fine.
-Jeremiah
On 02/10/2012 02:15 PM, Drew Kutcharian wrote:
Hi Everyone,
Let's say I have the following object which I would like to save in
No, not an issue. The nodes in DC2 know that they aren't supposed to
have data, so they go ask the nodes in DC1 for the data to return to you.
-Jeremiah
On 02/09/2012 05:28 AM, Roshan Pradeep wrote:
Thanks Peter for the replies.
Previously it was a typing mistake and it should be getting. I
Should already be on for all of the server side stuff. All of the
clients that I have used set it as well.
-Jeremiah
On 01/26/2012 07:17 AM, ruslan usifov wrote:
Hello
Is it possible set TCP_NODELAY on thrift socket in cassandra?
Are you deleting data or using TTL's? Expired/deleted data won't go
away until the sstable holding it is compacted. So if compaction has
happened on some nodes, but not on others, you will see this. The
disparity is pretty big 400Gb to 20GB, so this probably isn't the issue,
but with our
There were some nodetool ring load reporting issues with early version
of 1.0.X don't remember when they were fixed, but that could be your
issue. Are you using compressed column families, a lot of the issues
were with those.
Might update to 1.0.7.
-Jeremiah
On 01/16/2012 04:04 AM, Michael
Correct, any kind of locking in Cassandra requires clocks that are in
sync, and requires you to wait possible clock out of sync time before
reading to check if you got the lock, to prevent the issue you describe
below.
There was a pretty detailed discussion of locking with only Cassandra a
Since a Zookeeper cluster is a quorum based system similar to Cassandra,
it only goes down when n/2 nodes go down. And the same way you have to
stop writing to Cassandra if N/2 nodes are down (if using QUoRUM), your
App will have to wait for the Zookeeper cluster to come online again
before
By using quorum. One of the partitions will may be able to acquire
locks, the other one won't...
On 01/06/2012 03:36 PM, Drew Kutcharian wrote:
Bryce,
I'm not sure about ZooKeeper, but I know if you have a partition between
HazelCast nodes, than the nodes can acquire the same lock
.george. Is
there a way to query a slice of numbers with a list of ids? As in,
I want all the columns with numbers between 4 and 10 which have
ids steve or greg.
Cheers,
Steve
-Original Message-
From: Jeremiah Jordan [mailto:jeremiah.jor...@morningstar.com
The main issue with replacing super columns with composite columns right
now is that if you don't know all your sub-column names you can't select
multiple super columns worth of data in the same query without getting
extra stuff. You have to use a slice to get all subcolumns of a given
super
So you can do this with Cassandra, but you need more logic in your code.
Basically, you get the last safe number, M, then get N..M, if there are any
gaps, you try again reading those numbers. As long as you are not over writing
data, and you only update the last safe number after a successful
It is not telling you to multiply your key size by 10-12, it is telling you to
multiply the output of the nodetool cfstats reported key cache size by 10-12.
-Jeremiah
On Dec 18, 2011, at 6:37 PM, Guy Incognito wrote:
to be blunt, this doesn't sound right to me, unless it's doing something
You need to run repair on the node once it is back up (to get back the
data you just deleted). If this is happening on more than one node you
could have data loss...
-Jeremiah
On 12/16/2011 07:46 AM, Ramesh Natarajan wrote:
We are running a 30 node 1.0.5 cassandra cluster running RHEL 5.6
If you are OK linking to a C++ based library you can look at:
https://github.com/minaguib/libcassandra/tree/kickstart-libcassie-0.7/libcassie
It is wrapper code around libcassandra which exports a C++ interface.
If you look at the function names etc in the other languages, just use
the similar
Does your issue look similar this one?
https://issues.apache.org/jira/browse/CASSANDRA-3532
It is also dealing with compactaion taking 10X longer in 1.0.X
On 12/13/2011 09:00 AM, Dan Hendry wrote:
I have been observing that major compaction can be incredibly slow in
Cassandra 1.0 and was
What java are you using? OpenJDK or Sun/Oracle
(http://www.oracle.com/technetwork/java/javase/downloads/index.html)?
If you are using OpenJDK you might try Sun. Have you run diagnostics on
the disk? It is more likely there is an issue with your disk, not with
Cassandra.
On 12/11/2011
If you don't want downtime, you can take the original data and use the
bulk sstable loader to send it back into the cluster. If you don't mind
downtime you can take all the files from both data folders and put them
together, make sure there aren't any with the same names (rename them if
there
for copying data from a Cassandra cluster to somewhere on a disk
where there is no Cassandra instance? If not what is the best way/tool
to achieve that?
Cheers,
Alexandru
On Wed, Dec 7, 2011 at 10:00 PM, Jeremiah Jordan
jeremiah.jor...@morningstar.com
mailto:jeremiah.jor...@morningstar.com wrote
Stop your current cluster. Start a new cassandra instance on the
machine you want to store your data on. Use the sstable loader to load
the sstables from all of the current machines into the new machine. Run
major compaction a couple times. You will have all of the data on one
machine.
If you are writing data with QUORUM or ALL you should be safe to restart
cassandra on that node. If the extra space is all from *tmp* files from
compaction they will get deleted at startup. You will then need to run
repair on that node to get back any data that was missed while it was
full.
jconsole is going to be the most up to date documentation for the JMX
interface =(.
-Jeremiah
On 11/23/2011 10:49 AM, David McNelis wrote:
Ok. in that case I think the Docs are wrong.
http://wiki.apache.org/cassandra/JmxInterface has StorageService as
part of org.apache.cassandra.service.
Cassandra's Multiple Data Center Support is meant for replicating all data
across multiple datacenter's efficiently.
You could use the Byte Order Partitioner to prefix data with a key and assign
those keys to nodes in specific data centers, though the edge nodes would get
tricky as those would
Oops, I was thinking all in the same keyspace. If you made a new keyspace for
each DC you could specify where to put the data and have them only be in one
place.
-Jeremiah
On Nov 22, 2011, at 8:49 PM, Jeremiah Jordan wrote:
Cassandra's Multiple Data Center Support is meant for replicating
Yes, that is the port nodetool needs to access.
On Nov 22, 2011, at 8:43 PM, Maxim Potekhin wrote:
Hello,
I have this in my cassandra-env.sh
JMX_PORT=7199
Does this mean that if I use nodetool from another node, it will try to
connect to that
particular port?
Thanks,
Maxim
in this case? (assume hint is disable)
Thanks in advance.
On Thu, Nov 17, 2011 at 10:46 AM, Jeremiah Jordan
jeremiah.jor...@morningstar.com wrote:
Pretty sure data is sent to the coordinating node in DC2 at the same time it
is sent to replicas in DC1, so I would think 10's of milliseconds after
Pretty sure data is sent to the coordinating node in DC2 at the same time it is
sent to replicas in DC1, so I would think 10's of milliseconds after the
transport time to DC2.
On Nov 16, 2011, at 3:48 PM, ehers...@gmail.com wrote:
On a related note - assuming there are available resources
You should be able to do it as long as you shut down the whole cluster
for it:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Upgrading-to-1-0-tp6954908p6955316.html
On 11/13/2011 02:14 PM, Timothy Smith wrote:
Due to some application dependencies I've been holding off on a
If you query with ALL do you get the data? If you query with a range
slice do you get the data (list from the cli)?
On 11/11/2011 04:10 PM, Subrahmanya Harve wrote:
I have cross dc replication set up using 0.8.7 with 3 nodes on each DC
by following the +1 rule for tokens.
I am seeing an
I am pretty sure the way you have K1 configured it will be placed across
both DC's as if you had large ring. If you want it only in DC1 you need
to say DC1:1, DC2:0.
If you are writing and reading at ONE you are not guaranteed to get the
data if RF 1. If RF = 2, and you write with ONE, you
at 1:30 PM, Jeremiah Jordan
jeremiah.jor...@morningstar.com wrote:
I am pretty sure the way you have K1 configured it will be placed across
both DC's as if you had large ring. If you want it only in DC1 you
need to
say DC1:1, DC2:0.
If you are writing and reading at ONE you are not guaranteed
Indexed columns cause read before write so that the index can be updated
if the column already exists.
On 11/09/2011 02:46 PM, Oleg Tsernetsov wrote:
When monitoring JMX metrics of cassandra 0.8.7 loaded by write-only
test I observe significant read activity on column family where I
write to.
Actually, the data will be visible at QUORUM as well if you can see it
with ONE. QUORUM actually gives you a higher chance of seeing the new
value than ONE does. In the case of R=3 you have 2/3 chance of seeing
the new value with QUORUM, with ONE you have 1/3... And this JIRA fixed
an issue
- Batch read/slice from multiple column families.
On 11/01/2011 05:59 PM, Jonathan Ellis wrote:
Hi all,
Two years ago I asked for Cassandra use cases and feature requests.
[1] The results [2] have been extremely useful in setting and
prioritizing goals for Cassandra development. But with
I thought this patch made it into the 1.0 release? I remember it being
referenced in one of the re-rolls.
On Oct 20, 2011, at 9:56 PM, Jonathan Ellis jbel...@gmail.com wrote:
That looks to me like it's reporting uncompressed size as the load.
Should be fixed in the 1.0 branch for 1.0.1.
I could be totally wrong here, but If you are doing a QUORUM read and there is
a bad value encountered from the QUORUM won't a repair happen? I thought
read_repair_chance 0 just means it won't query extra nodes to check for bad
values.
-Jeremiah
On Oct 17, 2011, at 4:22 PM, Jeremy Hanna
Are you using compressed sstables? or the leveled sstables? Make sure you
include how you are configured in any JIRA you make, someone else was seeing a
similar issue with compression turned on.
-Jeremiah
On Oct 14, 2011, at 1:13 PM, Ramesh Natarajan wrote:
What does the Load column in
But truncate is still slow, especially if it can't use JNA (windows) as it
snapshots. Depending on how much data you are inserting during your unit
tests, just paging through all the keys and then deleting them is the fastest
way, though if you use timestamps besides now this won't work, as
If A works for our use case, it is a much better option. A given row
has to be read in full to return data from it, there used to be
limitations that a row had to fit in memory, but there is now code to
page through the data, so while that isn't a limitation any more, it
means rows that don't
So I need to read what I write before hitting send. Should have been,
If A works for YOUR use case. and Wide rows DON'T spread across nodes
well
On 09/29/2011 02:34 PM, Jeremiah Jordan wrote:
If A works for our use case, it is a much better option. A given row
has to be read in full
Yes. All the stress tool does is flood data through the API, no real
processing or anything happens. So thrift reading/writing data should
be the majority of the CPU time...
On 09/26/2011 08:32 AM, Baskar Duraikannu wrote:
Hello -
I have been running read tests on Cassandra using stress
Is it possible to update an existing column family with
{stable_compression: SnappyCompressor,
compaction_strategy:LeveldCompactionStrategy}? Or will I have to make a
new column family and migrate my data to it?
-Jeremiah
On 09/15/2011 01:01 PM, Sylvain Lebresne wrote:
The Cassandra team
Are you running on windows? If the default timestamp is just using
time.time()*1e6 you will get the same timestamp twice if the code is
close together. time.time() on windows is only millisecond resolution.
I don't use pycassa, but in the Thrift api wrapper I created for our
python code I
When using Solandra, do I need to use the Solr sharding synxtax in my
queries? I don't think I do because Cassandra is handling the
sharding, not Solr, but just want to make sure. The Solandra wiki
references the distributed search limitations, which talks about the
shard syntax further down
Assign the tokens like they are two separate rings, just make sure you
don't have any duplicate tokens.
http://wiki.apache.org/cassandra/Operations#Token_selection
The two datacenters are treated as separate rings, LOCAL_QUORUM will
only delay the client as long as it takes to write the data
You can checkout libcassandra for a C++ client built on top of thrift. It is
not feature complete, but it is pretty good.
https://github.com/matkor/libcassandra
On Aug 14, 2011, at 3:59 AM, Konstantinos Chasapis wrote:
Hi,
Thank you for your answer. Is there any documentation that
You need to wait for the servers to be up again before restarting the
next one. nodetool ring on one of the servers you aren't restarting
will tell you when it is back up. You can also watch for Starting up
server gossip in the log file to know when it is starting to join the
cluster again.
If you have RF=3 quorum won't fail with one node down. So R/W quorum will be
consistent in the case of one node down. If two nodes go down at the same
time, then you can get inconsistent data from quorum write/read if the write
fails with TimeOut, the nodes come back up, and then read asks
Does snapshot in 0.6 cause a flush to happen first? If not there could
be data in the database that won't be in the snapshot. Though that
seems like a long time for data to be sitting in the commit log and not
make it to the sstables.
On Thu, 2011-07-28 at 17:30 -0500, Jonathan Ellis wrote:
If you have RF=1, taking one node down is going to cause 25% of your
data to be unavailable. If you want to tolerate a machines going down
you need to have at least RF=2, if you want to use quorum and have a
machine go down, you need at least RF=3.
On Tue, 2011-08-02 at 16:22 +0200, Patrik
Connect with jconsole and run garbage collection.
All of the files that have a -Compacted with the same name will get
deleted the next time a full garbage collection runs, or when the node
is restarted. They have already been combined into new files, the old
ones just haven't been deleted yet.
All of the nodes should have the same seedlist. Don't use localhost as
one of the items in it if you have multiple nodes.
On Tue, 2011-08-02 at 10:10 -0700, Aishwarya Venkataraman wrote:
Nodetool does not show me all the nodes. Assuming I have three nodes
A, B and C. The seedlist of A is
If you are on linux see:
https://github.com/pcmanus/ccm
-Original Message-
From: Yang [mailto:tedd...@gmail.com]
Sent: Monday, July 11, 2011 3:08 PM
To: user@cassandra.apache.org
Subject: Re: custom StoragePort?
never mind, found this..
The more often you repair, the quicker it will be. The more often your
nodes go down the longer it will be.
Repair streams data that is missing between nodes. So the more data
that is different the longer it will take. Your workload is impacted
because the node has to scan the data it has to
We are running into the same issue on some of our machines. Still
haven't tracked down what is causing it.
From: William Oberman [mailto:ober...@civicscience.com]
Sent: Thursday, July 07, 2011 7:19 AM
To: user@cassandra.apache.org
Subject: Re: Cassandra memory
The reason to break it up is that the information will then be on
different servers, so you can have server 1 spending time retrieving row
1, while you have server 2 retrieving row 2, and server 3 retrieving row
3... So instead of getting 3000 things from one server, you get 1000
from 3 servers
For your Consistency case, it is actually an ALL read that is needed,
not an ALL write. ALL read, with what ever consistency level of write
that you need (to support machines dyeing) is the only way to get
consistent results in the face of a failed write which was at ONE that
went to one node,
With multiple data dirs you are still limited by the space free on any
one drive. So if you have two data dirs with 40GB free on each, and you
have 50GB to be compacted, it won't work, but if you had a raid, you
would have 80GB free and could compact...
-Original Message-
From:
Run two Cassandra clusters...
-Original Message-
From: Eric tamme [mailto:eta...@gmail.com]
Sent: Friday, June 17, 2011 11:31 AM
To: user@cassandra.apache.org
Subject: Re: Docs: Token Selection
What I don't like about NTS is I would have to have more replicas than
I need. {DC1=2,
]
Sent: Friday, June 17, 2011 1:02 PM
To: user@cassandra.apache.org
Subject: Re: Docs: Token Selection
Hi Jeremiah, can you give more details?
Thanks
On 6/17/2011 10:49 AM, Jeremiah Jordan wrote:
Run two Cassandra clusters...
-Original Message-
From: Eric tamme [mailto:eta...@gmail.com
I am pretty sure how Cassandra works will make sense to you if you think
of it that way, that rows do not get deleted, columns get deleted.
While you can delete a row, if I understand correctly, what happens is a
tombstone is created which matches every column, so in effect it is
deleting the
Also, tombstone's are not attached anywhere. A tombstone is just a
column with special value which says I was deleted. And I am pretty
sure they go into SSTables etc the exact same way regular columns do.
-Original Message-
From: Jeremiah Jordan [mailto:jeremiah.jor...@morningstar.com
I am pretty sure this would cut down on network traffic, but not on Disk
IO or CPU use. I think Cassandra would still have to deserialize the
whole column to get to the name. So if you really have a use case where
you just want the name, it would be better to store a separate name
with no data
Don't manually delete things. Let Cassandra do it. Force a garbage
collection or restart your instance and Cassandra will delete the unused
files.
-Original Message-
From: AJ [mailto:a...@dude.podzone.net]
Sent: Tuesday, June 07, 2011 10:15 AM
To: user@cassandra.apache.org
Subject: Re:
Only waiting for quorum responses and then resolving the one with the latest
timestamp to return to the client.
From: Fredrik Stigbäck [mailto:fredrik.l.stigb...@sitevision.se]
Sent: Friday, June 03, 2011 9:44 AM
To: user@cassandra.apache.org
Subject: Reading
Or at least someone should write a script which will take a YAML config
and turn it into a CLI script.
From: Edward Capriolo [mailto:edlinuxg...@gmail.com]
Sent: Friday, June 03, 2011 12:00 PM
To: user@cassandra.apache.org
Subject: Re: Loading Keyspace from YAML
Cassandra handles this by using a different design, you don't append
anything. You use the fact that in Cassandra you have dynamic columns
and you make a new column every time you want to put more data in. Then
when you do finally need to read the data out you read out a slice of
columns, not
This cluster was updated from 0.6.8-0.7.4-0.7.5. Do I need to run
scrub or compact or something to get all the sstables updated to the new
version?
Jeremiah Jordan
Application Developer
Morningstar, Inc.
Morningstar. Illuminating investing worldwide.
+1 312 696
So we are currently running a 10 node ring in one DC, and we are going to be
adding 5 more nodes
in another DC. To keep the rings in each DC balanced, should I really
calculate the tokens independently
and just make sure none of them are the same? Something like:
DC1 (RF 5):
1: 0
2:
The files inside the keyspace folders are the SSTable.
From: aaron morton [mailto:aa...@thelastpickle.com]
Sent: Friday, April 29, 2011 4:49 PM
To: user@cassandra.apache.org
Subject: Re: best way to backup
William,
Some info on the sstables from me
to
be able to use NetworkTopologyStrategy. I am pretty sure
RackUnawareStrategy and NetworkTopologyStrategy pick the same nodes to
put data on if there is only one DC, so it should be ok right?
Jeremiah Jordan
Application Developer
Morningstar, Inc.
Morningstar
/lastSuccessfulBuild/
artifact/cassandra/build/
To:
https://builds.apache.org/hudson/job/Cassandra/lastSuccessfulBuild/artif
act/cassandra/build/
The old link doesn't work anymore.
-Jeremiah
Jeremiah Jordan
Application Developer
Morningstar, Inc.
Morningstar. Illuminating
Connect with jconsole and watch the memory consumption graph. Click the
force GC button watch what the low point is, that is how much memory is
being used for persistent stuff, the rest is garbage generated while
satisfying queries. Run a query, watch how the graph spikes up when you
run your
Jeremiah Jordan
Application Developer
Morningstar, Inc.
Morningstar. Illuminating investing worldwide.
+1 312 696-6128 voice
jeremiah.jor...@morningstar.com
www.morningstar.com
This e-mail contains privileged and confidential information and is
intended only
Anyone know if 0.7.4 will work with thirft 0.6? Or do I have to keep
thrift 0.5 around to use it?
Thanks!
Jeremiah Jordan
Application Developer
Morningstar, Inc.
Morningstar. Illuminating investing worldwide.
+1 312 696-6128 voice
jeremiah.jor
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