timeout (using cqlsh).
> If I add something to the where clause, the performance drops
> significantly:
>
> select uuid,offset,type,textdata from doc.embeddings_googleflant5large
> where offset=1 order by embeddings ANN OF [] limit 20;
>
> That query will timeout when runni
Happy new year, everyone!
Reminder, the Accelerate CFP closes in just over two weeks:
https://www.datastax.com/blog/2019/11/datastax-accelerate-20-call-papers-now-open
On Mon, Nov 11, 2019 at 1:28 PM Jonathan Ellis wrote:
> This spring DataStax kicked off Accelerate, a new conference carry
release are here
<https://www.datastax.com/blog/2019/12/tools-for-apache-cassandra>. *
--
Jonathan Ellis
co-founder, http://www.datastax.com
@spyced
te-20-call-papers-now-open>
.
The CFP closes Jan 22. Hope to hear from you soon!
--
Jonathan Ellis
co-founder, http://www.datastax.com
@spyced
Which was followed up by
https://www.researchgate.net/profile/Akon_Dey/publication/282156834_Scalable_Distributed_Transactions_across_Heterogeneous_Stores/links/56058b9608ae5e8e3f32b98d.pdf
On Tue, Oct 16, 2018 at 1:02 PM Jonathan Ellis wrote:
> It looks like it's based on this:
>
---
> > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org
> > For additional commands, e-mail: user-h...@cassandra.apache.org
> >
>
> -
> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org
> For additional commands, e-mail: user-h...@cassandra.apache.org
>
>
--
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@spyced
interfaces.
Of course additional security measures are useful as defense in depth, but
bottom line if the bad guys can't connect to your cluster they can't harm
it.
--
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co-founder, http://www.datastax.com
@spyced
f
> disabling cache would help us in this situation. And if yes, how we can
> disable cache completely.
>
--
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Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
it
committed for 3.4. In the meantime, I thought it best to give people more
notice rather than less.)
[1] https://issues.apache.org/jira/browse/CASSANDRA-10857
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
or more"
than I expected.
- Including the "both" responses, a majority of users are deploying SSD now.
On Wed, Sep 30, 2015 at 1:18 PM, Jonathan Ellis <jbel...@gmail.com> wrote:
> With 3.0 approaching, the Apache Cassandra team would appreciate your
> feedback a
The survey asks about "your application." We have multiple applications
> using Cassandra. Are you looking for information about each application
> separately, or the sum of all of them?
>
> Jim
>
> On Wed, Sep 30, 2015 at 2:18 PM, Jonathan Ellis <jbel...@gmail.com
minutes to fill it out!
--
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co-founder, http://www.datastax.com
@spyced
, for
instance, including cross-version repair.
What will be the EOL policy for releases after 3.0? Given your example,
will 3.1 still see bugfixes at this point when I decide to upgrade to 3.7?
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
As soon as 8099 is done.
On Thu, Jun 11, 2015 at 11:53 AM, Pierre Devops pierredev...@gmail.com
wrote:
Hi,
3.x beta release date ?
2015-06-11 16:21 GMT+02:00 Jonathan Ellis jbel...@gmail.com:
3.1 is EOL as soon as 3.3 (the next bug fix release) comes out.
On Thu, Jun 11, 2015 at 4:10 AM
? Given your example,
will 3.1 still see bugfixes at this point when I decide to upgrade to 3.7?
--
--
Daniel
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
expected, but 2.2
will be very close to as stable as 2.1 and users will be well served by
upgrading. We will maintain the 2.2 stability series until 4.0 is
released, and 3.0 for six months after that.Thanks for reading this far,
and I look forward to hearing how 2.2rc1 works for you!*
--
Jonathan
://issues.apache.org/jira/secure/attachment/12632583/CASSANDRA-6285-disruptor-heap.patch
--
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co-founder, http://www.datastax.com
@spyced
in_memory_compaction_limit_in_mb: 64
Does anyone have any ideas why we are seeing this so selectively on one box?
Any cures???
--
John Pyeatt
Singlewire Software, LLC
www.singlewire.com
--
608.661.1184
john.pye...@singlewire.com
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co-founder
embedded cassandra code!
Have fun.
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co-founder, http://www.datastax.com
@spyced
)
at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:266)
... 6 more
Thanks,
Santosh Shet
Software Engineer | VistaOne Solutions
Direct India : +91 80 30273829 | Mobile India : +91 8105720582
Skype : santushet
--
Jonathan Ellis
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co
contributors whitelist, please contact me. We had to add the
whitelist to stop spam.
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@spyced
.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
behind this?
-Vivek
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
: http://www.datastax.com/docs/1.2/ddl/index
Is it a limitation of CQL3 and its connection vs. thrift?
Or more likely i'm just doing something wrong?
Thanks,
Joe
--
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co-founder, http://www.datastax.com
@spyced
to tune it.
So, my question is, are there any optimizations that I can do to handle
these large datatasets ?
and why does my performance go back to normal when I restart Cassandra ?
Thanks !
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
. Is commit log is less expensive ? I didn't really understood the
magic :) Would you like to elaborate it more ?
Thank you in advance for your time. Looking to hear from you.
Regards,
Ansar Rafique
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
unpacking helps in this situation?
Sorry for any inconvenience :)
Thanks a lot,
Sam
--
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Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
(Want to go, but your company won't pay? Let me know off-list and
I'll see what I can do.)
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
the instructions below, but only doing per column family
backup and restore.
http://www.datastax.com/docs/1.2/operations/backup_restore
Thanks,
Ron
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
for this? (we have been having to play with this setting a lot lately as too
big and it gets slow yet too small and cassandra uses way too much RAM…we are
still trying to find the right balance with this setting).
Thanks,
Dean
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http
The videos from the NYC* Big Data Tech Day are all up. I blogged
about my favorites here:
http://www.datastax.com/dev/blog/my-top-five-talks-from-nyc-big-data-tech-day
Good to meet the NYC community again!
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
and is not using the partitioner function
decorateKey(…).
Would it be logical to always call the partitioner function decorateKey such
that the creation of an own partitioner and key decoration is possible?
Ignace Desimpel
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http
://www.datastax.com/company/news-and-events/events/cassandrasummit2012/presentations
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
execute a M/R job .. the console showed HUNDRED of Map tasks.
May I know, is the normal since is vnodes? If yes, this have slow the M/R
job to finish/complete.
Thanks
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
of
2,560?
On Fri, Mar 29, 2013 at 10:28 AM, Jonathan Ellis jbel...@gmail.com wrote:
I still don't see the hole in the following reasoning:
- Input splits are 64k by default. At this size, map processing time
dominates job creation.
- Therefore, if job creation time dominates, you have
to improve the performance? It seems like I need to lower the
number of virtual nodes.
Best Regards,
Cem
--
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co-founder, http://www.datastax.com
@spyced
[7]:
http://www.datastax.com/dev/blog/performance-improvements-in-cassandra-1-2
[8]: http://www.datastax.com/dev/blog/binary-protocol
[9]: http://www.datastax.com/dev/blog/configuration-changes-in-cassandra-1-2
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http
the code wrong?
Also if this is correct, look like if the third node is in other DC, the
read will slow down even when the consistency was TWO?
Thanks,
Sankalp
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http
--
Mike Heffner m...@librato.com
Librato, Inc.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
Mishra mishra.v...@gmail.com wrote:
Hi,
Is it possible to reuse same compound primary key after delete? I guess it
works fine for non composite keys.
-Vivek
CompositeTypeRunner.java
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source
this could be useful ?
Good idea, I'll get that noted. Thanks!
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
data a second time is harmless -- except for
counters. So, to avoid replaying flushed counter data, we recommend
performing drain when shutting down the pre-1.1.6 C* prior to upgrade.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra
of Cassandra (e.g. 1.1, or 1.2) ? Is
there any option to help on this front ?
Thanks in advance for any pointers that you can provide to help me understand
this issue.
Best Regards,
-Thomas
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional
any experience with this ? Anyone tried it ?
--
Regards,
Oleg Dulin
NYC Java Big Data Engineer
http://www.olegdulin.com/
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
found that is not part of the PRIMARY KEY
So, my question is, how do I create a Dynamic Column Family via the CQLSH
v3?
Thanks!
-erik
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
: 179 *
I am unable to see the effect of above setcachecapacity command. Let me
know how i can configure the cache capacity, and check it's effect.
With Regards,
Amit
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http
Yes.
On Thu, Aug 2, 2012 at 5:33 AM, Radim Kolar h...@filez.com wrote:
1) I assume that I have to call the loadNewSSTables() on each node?
this is same as nodetool refresh?
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra
a little over weeks
to send in your talk proposal. Don't put it off! We'll look forward to
seeing some great ones shortly!
Thanks
Nick
(On behalf of the Conferences committee)
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
://www.datastax.com/services/training
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
five minutes and submit your nomination today at [2].
Nominations will be open throughout the next week. Those selected
will be notified in advance.
[1] http://www.datastax.com/events/cassandrasummit2012
[2] http://www.surveymonkey.com/s/WVBZGHR
--
Jonathan Ellis
Project Chair, Apache Cassandra
$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Service exit with a return value of 100
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax
since you'd basically need to rewrite the
patch.
On Sun, Jul 1, 2012 at 6:40 AM, Joost Van De Wijgerd jwijg...@gmail.com wrote:
Hi Jonathan,
Looks good, any chance of porting this fix to the 1.0 branch?
Kind regards
Joost
Sent from my iPhone
On 1 jul. 2012, at 09:25, Jonathan Ellis jbel
7878323239537570657254616e67307878; sending response to
6556@/192.168.0.3
BRs
//Ares
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
://www.datastax.com/dev/blog/schema-in-cassandra-1-1
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
? I can see them in 1.0.8 but not 1.1.0. If so,
was wondering why, as they're fairly useful :)
Bill
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
.
config.Config
Invalid yaml; unable to start server. See log for stacktrace.
Thanks Regards
Adeel Akbar
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
tasks will be executed until I start another
test and the 7000 pending will never be executed.
I'm using leveled compaction with 5MB SS tables and my tests have a 50:50
read:write ratio. Each value is a 10K byte array with random content.
Thanks,
Martin
--
Jonathan Ellis
Project Chair
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
/CASSANDRA-4399 to fix this.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
No.
(Moving to user list.)
On Jun 28, 2012 8:17 AM, Fábio Caldas fabio.cal...@gmail.com wrote:
It´s possible to use distinct on cql?
--
Atenciosamente,
Fábio Caldas
van de Wijgerd
joost.van.de.wijgerd@Skype
http://www.linkedin.com/in/jwijgerd
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
of expired data (default 20%). So you
won't have to force a major for this use case anymore.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
:
Dear distinguished colleagues:
I don't want all of my CFs cached, but one in particular I do.
How can I configure that ?
Thanks,
Oleg
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
of this message does not constitute a
waiver of any privilege. If you receive this message in error, please do
not directly or indirectly print, copy, retransmit, disseminate, or
otherwise use the information. In addition, please delete this e-mail and
all copies and notify the sender.
--
Jonathan
have
received this message in error, please contact the sender immediately and
irrevocably delete this message and any copies.
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http://www.datastax.com
signature-logo29.png
- Belgium
Tel + 32 9 330 51 80 | Fax + 32 9 330 51 81 | Cell + 32 473 777 121
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
Correction: the first compaction after expiration + gcgs can remove
it, even if it hasn't been turned into a tombstone previously.
On Tue, May 22, 2012 at 9:37 AM, Jonathan Ellis jbel...@gmail.com wrote:
Additionally, it will always take at least two compaction passes to
purge an expired column
fiber channels, so I don't know if that has impact on performance as well.
memory speed network speed
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source
already exists
1337242754356-purchase_history directory, so i think that snapshort
names that generate cassandra not uniquely.
PS: We use cassandra 1.0.10 on Ubuntu 10.0.4-LTS
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra
://www.mailmktg.makemytrip.com/signature/images/twitter-icon.gif]http://twitter.com/makemytripdeals
*Twitter*
** **
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
image003.gifimage005.gifimage004
[1] https://issues.apache.org/jira/browse/CASSANDRA-1983
--
=Robert Coli
AIMGTALK - rc...@palominodb.com
YAHOO - rcoli.palominob
SKYPE - rcoli_palominodb
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http
)
at
org.apache.cassandra.io.sstable.SSTableIdentityIterator.init(SSTableIdentityIterator.java:109)
... 20 more
thx
--
by Preston Cheung
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
Compaction seem to
have their snapshots created successfully.
Any ideas other than turning off Leveled Compaction?
Thanks,
Brian
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
. In cassandra
download site the reference is still pointing to 2.0
Specifically Composite Types
Regards,
Tamil.s
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
output column family. Is there a way
that I can set multiple column families in one keyspace and output data to
all the cfs?
Thx
Shawna
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
On Mon, Apr 30, 2012 at 2:11 PM, Patrik Modesto
patrik.mode...@gmail.com wrote:
I think the problem is somehow connected to an IntegerType secondary
index.
Could be, but my money is on the supercolumns in the HH data model.
Can you create a jira ticket?
--
Jonathan Ellis
Project Chair
arbitrary Java code to be injected into
Cassandra. You don't need native code to do dangerous things with
that!
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
implications?
Thanks,
*Tamar Fraenkel *
Senior Software Engineer, TOK Media
[image: Inline image 1]
ta...@tok-media.com
Tel: +972 2 6409736
Mob: +972 54 8356490
Fax: +972 2 5612956
--
Jonathan Ellis
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co-founder of DataStax, the source
mailing list archive at
Nabble.com.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
subsequent pass that includes A *and all other sstables
containing rows with the same key* will drop the tombstones.
thats why i proposed to attach TTL to entire CF. Tombstones would not be
needed
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source
swapped, which does depend on
JNA.
mlockall does depend on JNA, but we only lock the JVM itself in
memory. The OS is free to page data files in and out as needed.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http
://issues.apache.org/jira/browse/CASSANDRA
[4]: user@cassandra.apache.org
[5]:
http://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=shortlog;h=re
fs/tags/cassandra-1.1.0-rc1
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra
On Sat, Apr 14, 2012 at 3:27 AM, Radim Kolar h...@filez.com wrote:
forceUserDefinedCompaction would be more usefull if you could do compaction
on 2 tables.
You absolutely can. That's what the user defined part is: you give
it the exact list of sstables you want compacted.
--
Jonathan Ellis
passed gc_grace period, so it shoould be wiped at any compaction on
table A.
Any compaction pass over A will first convert the TTL data into tombstones.
Then, any subsequent pass that includes A *and all other sstables
containing rows with the same key* will drop the tombstones.
--
Jonathan
?
Thanks,
Omid
[1] http://pubs.opengroup.org/onlinepubs/007908799/xsh/mlockall.html
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Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
. :)
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
(2.6.32-40-generic)
--
With kind regards,
Robin Verlangen
www.robinverlangen.nl
--
With kind regards,
Robin Verlangen
www.robinverlangen.nl
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http
without
setting them as well)
-Java is run in the interpreted mode(-Xint)
-I'm using user mode linux
Any pointers to what I might be doing wrong will be very helpful.
Thanks in advance,
Aniket
--
Jonathan Ellis
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co-founder of DataStax, the source
?
If you want them all compacted together into one big sstable, yes.
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
Cassandra to avoid this?
Regards,
Romain
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
point,
but I'm rather confident I'm checking for key nullity.
The stacktrace indicates an error with the very first key in the
sstable, if that helps.
--
Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
-19709-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19710-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19711-Data.db,].
59,643,011 to 57,564,216 (~96% of original) bytes for 590,909 keys at
1.814434MB/s. Time: 30,256ms.
--
Jonathan Ellis
Project Chair, Apache Cassandra
).
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
, 80 Clarence St, Sydney NSW 2000
PO Box H58, Australia Square, Sydney NSW 1215
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Jonathan Ellis
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co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/column-s-timestamp-tp7429905p7429905.html
Sent from the cassandra-u...@incubator.apache.org mailing list archive at
Nabble.com.
- Pierre
--
Jonathan Ellis
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co-founder of DataStax
whether the limit is 1, 100 or 1000.
Thanks for any help,
Chris
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
columns
even while a major compact is executing?
Thanks,
Ross
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
?
Cheers
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
and max_compaction_threshold = 32
and replicate_on_write = true
and row_cache_provider = 'ConcurrentLinkedHashCacheProvider'
and compaction_strategy =
'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy';
On Fri, Feb 24, 2012 at 10:07 PM, Jonathan Ellis jbel...@gmail.com wrote:
I've
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