Re: Write to SSTables to do really fast initial load of database (e.g. for migration)

2020-04-21 Thread Eric Evans
And likewise, this mailing list is the correct place to ask questions for the Apache Cassandra project. -- Eric Evans john.eric.ev...@gmail.com

Re: Cluster sizing for huge dataset

2019-09-30 Thread Eric Evans
#x27;s worth keeping in mind though that you'll still have a 12-16T blast radius in the event of a host failure. As the host density goes up, consider steps to make the host more robust (RAID, redundant power supplies, etc).

Re: JBOD disk failure

2018-08-16 Thread Eric Evans
l node rebuild. >> Otherwise repair will get the node consistent again. > > [ ... ] -- Eric Evans john.eric.ev...@gmail.com - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org

Re: JOB | Permanent Java Development Manager (Montreal, Canada)

2018-08-01 Thread Eric Evans
am to me. I'll let others on the list chime-in if they disagree, but I'm inclined to unsubscribe/ban anyone making posts like this. -- Eric Evans john.eric.ev...@gmail.com - To unsubscribe, e-mail: user-unsubscr...@cass

Re: Cassandra read/sec and write/sec

2018-06-29 Thread Eric Evans
http://cassandra.apache.org/doc/latest/operating/metrics.html#compaction-metrics Hope this helps. -- Eric Evans john.eric.ev...@gmail.com - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org

Re: Running multiple instances of Cassandra on each node in the cluster

2018-05-10 Thread Eric Evans
ed one, and don't care which), and a `c-foreach-restart` that iteratively restarts. Those are here: https://github.com/eevans/cassandra-tools-wmf -- Eric Evans eev...@wikimedia.org

Re: [EXTERNAL] RE: What versions should the documentation support now?

2018-03-15 Thread Eric Evans
ever heard of anyone shipping docs for multiple versions, I don’t know > why we’d do that. You can get the docs for any version you need by > downloading C*, the docs are included. I’m a firm -1 on changing that > process. > > We should still host versioned docs on t

Re: JMX metrics for CL

2018-02-28 Thread Eric Evans
luster=restbase&var-node=All&var-quantile=99p Note: This graph suppresses series with a rate of zero for the graph time-span, so you won't see all possible request-types. -- Eric Evans john.eric.ev...@gmail.com

Re: Gathering / Curating / Organizing Cassandra Best Practices & Patterns

2018-02-26 Thread Eric Evans
> > I am one of the people who didn’t know the history and is now as this > article describes, caught between “A Rock and a hard place…: > > http://www.zdnet.com/article/a-rock-and-a-hard-place-between-scylladb-and- > cassandra/ > > > > I bet it’s been painful for everyone. It’s really said. > > > > Kenneth Brotman > -- Eric Evans john.eric.ev...@gmail.com

Re: run Cassandra on physical machine

2017-12-07 Thread Eric Evans
ance in the same machine within one rack with > different port? > > Could anyone please advise? We do this. It works, but it is not pretty. Honestly, I would gladly accept the (relatively small) overhead of a virtual machine (or better yet, use containers), than do this. --

Re: Best JMX Monitor to graphite ?

2017-11-30 Thread Eric Evans
> What would you suggest ? We're using https://github.com/wikimedia/cassandra-metrics-collector -- Eric Evans eev...@wikimedia.org - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For add

Re: Analysis of the jvm heap cassandra

2017-09-25 Thread Eric Evans
een my experience that recent versions of MAT are capable of working in available memory less than the heap size. I wouldn't hazard a guess exactly what it would take for a 30G heap, but I've (lately) done OK with analyzing 12G heaps using a MAT max heap size of 4G. -- Eric Evan

Re: Cassandra and OpenJDK

2017-08-28 Thread Eric Evans
tch out for? Or is the warning just legacy? > We use OpenJDK, and I get the impression that quite a few others do as well. If it is working well for you, I would use it and ignore the warnings (and if it is not, then let us know and submit a bug report). -- Eric Evans eev...@wikimedia.org

Re: Using Cassandra for my usecase

2017-06-12 Thread Eric Evans
http://newts.io, https://github.com/opennms/newts), I think it ticks all of the above boxes. -- Eric Evans john.eric.ev...@gmail.com - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org

Re: Does "nodetool repair" need to be run on each node for a given table?

2017-03-15 Thread Eric Evans
ne is making you respond, either. -- Eric Evans john.eric.ev...@gmail.com

Re: scylladb

2017-03-14 Thread Eric Evans
, numa, scheduling, concurrency, etc. At some point it got a little sales-y on the one side, and caremad on the other. ¯\_(ツ)_/¯ -- Eric Evans john.eric.ev...@gmail.com

Re: OOM on Apache Cassandra on 30 Plus node at the same time

2017-03-06 Thread Eric Evans
progress > Compaction system hints > 28.5 GB 92.38 GB bytes 30.85% -- Eric Evans john.eric.ev...@gmail.com

Re: Expensive to run nodetool status often?

2017-01-26 Thread Eric Evans
rovides, but outputs JSON, either on the command line where it could be wrapped by a script, or via a REST interface. There is no exact equivalent to status just yet, but it would be pretty trivial to add. I'm happy to do that (give me a few days), or I'd gladly accept a pull request. -- Eric Evans john.eric.ev...@gmail.com

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

2017-01-03 Thread Eric Evans
e Oracle JVM, and perhaps perform some test runs in CI against OpenJDK. Actively discouraging people from using the Free Software alternative here, one that is working well for many, isn't the behavior I'd normally expect from a Free Software project. -- Eric Evans john.eric.ev...@gmail.com

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

2017-01-02 Thread Eric Evans
s a Free Software project, or maybe that you just really like Oracle, I'm honestly not sure. It doesn't seem relevant though, because there is in fact a Free Software JVM (and in addition to some mere mortals, the fine people at Oracle do contribute to it). -- Eric Evans john.eric.ev...@gmail.com

Re: Why does Cassandra recommends Oracle JVM instead of OpenJDK?

2016-12-21 Thread Eric Evans
way they are dealing with > Java in General. I don't really have any opinions on Oracle per say, but Cassandra is a Free Software project and I would prefer that we not depend on commercial software, (and that's kind of what we have here, an implicit dependency). -- Eric Evans john.eric.ev...@gmail.com

Re: node decommission throttled

2016-12-08 Thread Eric Evans
gt; (http://www.mail-archive.com/user@cassandra.apache.org/msg42095.html) Right, that is your bottleneck. There is no per-host concurrency; I'm afraid there is not much you can do about it at the moment. https://issues.apache.org/jira/browse/CASSANDRA-4663 might be relevant Cheers, -- Eric Evans john.eric.ev...@gmail.com

Re: Huge files in level 1 and level 0 of LeveledCompactionStrategy

2016-12-08 Thread Eric Evans
7;: '0.25', > 'tombstone_compaction_interval': '300', 'class': > 'org.apache.cassandra.db.compaction.LeveledCompactionStrategy'} > > How could this happen? The subject says level 1 and 0; What does level 1 look like? -- Eric Evans john.eric.ev...@gmail.com

Re: node decommission throttled

2016-12-07 Thread Eric Evans
g a thread dump and see what the utilization of the sending threads are. -- Eric Evans john.eric.ev...@gmail.com

Re: Re : Generic keystore when enabling SSL

2016-11-18 Thread Eric Evans
On Thu, Nov 17, 2016 at 10:52 AM, sai krishnam raju potturi wrote: > I would suggest you create your own Certificate Authority, and create a > generic keystore and trustore. FWIW, that's what we (WMF) do: https://github.com/eevans/cassandra-ca-manager -- Eric Evans john.eric.ev...@gmail.com

Re: Tools to manage repairs

2016-10-28 Thread Eric Evans
On Thu, Oct 27, 2016 at 4:13 PM, Alexander Dejanovski wrote: > A few patches are pushing the limits of partition sizes so we may soon be > more comfortable with big partitions. You don't happen to have Jira links to these handy, do you? -- Eric Evans john.eric.ev...@gmail.com

Re: Run sstablescrub in parallel

2016-10-12 Thread Eric Evans
ary}` to prevent client connections and `nodetool disablegossip` to leave the ring. Cheers, -- Eric Evans john.eric.ev...@gmail.com

Re: Re : Generic keystore when enabling SSL

2016-09-21 Thread Eric Evans
eneric keystore and > truststore. Can you explain what you mean by "generic keystore"? Are you looking to create keystores signed by a self-signed root CA (distributed via a truststore)? -- Eric Evans john.eric.ev...@gmail.com

Re: How Fast Does Information Spread With Gossip?

2016-09-19 Thread Eric Evans
(https://www.youtube.com/channel/UCoj4eQh_dZR37lL78ymC6XA), and it'll be announced on the website (http://paperswelove.org/). -- Eric Evans john.eric.ev...@gmail.com

Strangeloop?

2016-09-11 Thread Eric Evans
#x27;m speaking on Saturday). I'd love to chat with anyone interested over beers/coffee/whatever, and if there were enough folks, we could set up something a little more formal. Let me know! Cheers, -- Eric Evans john.eric.ev...@gmail.com

Re: Support/Consulting companies

2016-08-23 Thread Eric Evans
#x27;t award such a status (everyone is a VP :)). -- Eric Evans john.eric.ev...@gmail.com

[ANN]: Cert management with self-signed CA for Cassandra (and presumably other Java stuff)

2016-08-22 Thread Eric Evans
r to do it manually. Cheers, -- Eric Evans john.eric.ev...@gmail.com

Re: unsubscibe

2016-08-15 Thread Eric Evans
m people nicely telling someone how to unsubscribe. -- Eric Evans john.eric.ev...@gmail.com

Re: Listing Keys Hierarchically Using a Prefix and Delimiter

2016-07-29 Thread Eric Evans
x27;re free to design your own API, you could make the delimiter arbitrary at PUT instead of GET. -- Eric Evans john.eric.ev...@gmail.com

Re: Listing Keys Hierarchically Using a Prefix and Delimiter

2016-07-28 Thread Eric Evans
st prefix would be a > really quick and easy way to return the first 1000 results. > > > Is this even possible using cassandra? Perhaps you could just store the objects as a simple key-value representation (like your "stuff" table above), and then separately index the components of the key (presumably in another table), using adjacency lists (https://en.wikipedia.org/wiki/Adjacency_list). -- Eric Evans john.eric.ev...@gmail.com

Re: Cassandra discussion channel on Slack!

2016-07-18 Thread Eric Evans
a-slack.herokuapp.com/ > > Looking forward to talk to you on Slack! Please don't do this; We already have an (active) IRC channel on Freenode, #cassandra (http://freenode.net/). -- Eric Evans john.eric.ev...@gmail.com

Re: Library/utility announcements?

2016-06-02 Thread Eric Evans
for us to list them? I guess it depends on what it is, maybe one of: http://wiki.apache.org/cassandra/ClientOptions http://wiki.apache.org/cassandra/IntegrationPoints http://wiki.apache.org/cassandra/Administration%2520Tools Cheers, -- Eric Evans john.eric.ev...@gmail.com

Re: C* working with Open JDK but not Oracle JDK

2016-05-31 Thread Eric Evans
important to have our Free Software project supported on the Free Software JVM. -- Eric Evans john.eric.ev...@gmail.com

Re: Error while rebuilding a node: Stream failed

2016-05-27 Thread Eric Evans
gt;>>>>>>> ~[guava-16.0.jar:na] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.StreamResultFuture.maybeComplete(StreamResultFuture.java:208) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.StreamResultFuture.handleSessionComplete(StreamResultFuture.java:184) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.StreamSession.closeSession(StreamSession.java:415) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.StreamSession.sessionFailed(StreamSession.java:621) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.StreamSession.messageReceived(StreamSession.java:475) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.ConnectionHandler$IncomingMessageHandler.run(ConnectionHandler.java:256) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at java.lang.Thread.run(Unknown Source) ~[na:1.7.0_79] >>>>>>>>>>> ERROR [STREAM-OUT-/192.168.1.140] 2016-05-24 22:44:58,629 >>>>>>>>>>> StreamSession.java:505 - [Stream >>>>>>>>>>> #2c290460-20d4-11e6-930f-1b05ac77baf9] >>>>>>>>>>> Streaming error occurred >>>>>>>>>>> java.io.IOException: Broken pipe >>>>>>>>>>> at sun.nio.ch.FileDispatcherImpl.write0(Native Method) >>>>>>>>>>> ~[na:1.7.0_79] >>>>>>>>>>> at sun.nio.ch.SocketDispatcher.write(Unknown Source) >>>>>>>>>>> ~[na:1.7.0_79] >>>>>>>>>>> at sun.nio.ch.IOUtil.writeFromNativeBuffer(Unknown >>>>>>>>>>> Source) ~[na:1.7.0_79] >>>>>>>>>>> at sun.nio.ch.IOUtil.write(Unknown Source) ~[na:1.7.0_79] >>>>>>>>>>> at sun.nio.ch.SocketChannelImpl.write(Unknown Source) >>>>>>>>>>> ~[na:1.7.0_79] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.io.util.DataOutputStreamAndChannel.write(DataOutputStreamAndChannel.java:48) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.messages.StreamMessage.serialize(StreamMessage.java:44) >>>>>>>>>>> ~[apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.sendMessage(ConnectionHandler.java:351) >>>>>>>>>>> [apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at >>>>>>>>>>> org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.run(ConnectionHandler.java:331) >>>>>>>>>>> [apache-cassandra-2.1.13.jar:2.1.13] >>>>>>>>>>> at java.lang.Thread.run(Unknown Source) [na:1.7.0_79] -- Eric Evans john.eric.ev...@gmail.com

Re: Cassandra Debian repos (Apache vs DataStax)

2016-05-18 Thread Eric Evans
ly a part of Debian™. Make sense? :) -- Eric Evans john.eric.ev...@gmail.com

Re: Cassandra Debian repos (Apache vs DataStax)

2016-05-18 Thread Eric Evans
It does, doesn't it? I'll fix this. Thanks Drew! -- Eric Evans john.eric.ev...@gmail.com

Re: Cassandra Debian repos (Apache vs DataStax)

2016-05-17 Thread Eric Evans
t; should continue using it or switch to the Apache repo. If it is your intention to run Apache Cassandra, from the Apache Cassandra project, then you should be using the Apache repo. -- Eric Evans eev...@apache.org

Re: client time stamp - force to be continuously increasing?

2016-05-14 Thread Eric Evans
meant to represent a causal ordering. In other words, if you somehow unconditionally enforced monotonicity on the server side[*] you'd break a whole other set of use-cases. [*]: But, how would you even manage such a thing without coordination, in a distributed environment? -- Eric Evans john.eric.ev...@gmail.com

Re: LeveledCompaction sstable counts

2016-05-06 Thread Eric Evans
1 year respectively). -- Eric Evans john.eric.ev...@gmail.com

Re: LeveledCompaction sstable counts

2016-05-06 Thread Eric Evans
f exponentially increasing size. The 3rd level (level 2), is sized at 100 tables, and there are currently 104. Compaction will work to get that down to the target of 100, and in doing so create new tables in the 4th level (level 3). TL;DR This all looks perfectly normal. -- Eric Evans john.eric.ev...@gmail.com

Re: Cassandra Single Node Setup Questions

2016-04-07 Thread Eric Evans
to consider MySQL or Postgres. -- Eric Evans eev...@wikimedia.org

Re: NTP Synchronization Setup Changes

2016-03-31 Thread Eric Evans
d by a delete is a good example). Now imagine having your clock yanked backward to correct for drift between the first such operation and the second. I would strongly recommend you come up with a stable NTP setup. -- Eric Evans eev...@wikimedia.org

Re: Speeding up "nodetool rebuild"

2016-03-31 Thread Eric Evans
11303 aims to introduce an inbound tunable though). -- Eric Evans eev...@wikimedia.org

Re: Migration from 2.0.10 to 2.1.12

2016-03-30 Thread Eric Evans
stead of > > CREATE TABLE pns_fr_2_jean.table1 ( > bill_id text PRIMARY KEY, > full text, > name text, > provider_date timestamp, > total text > ) -- Eric Evans eev...@wikimedia.org

Re: Broken links in Apache Cassandra home page

2016-03-03 Thread Eric Evans
On Thu, Mar 3, 2016 at 10:10 AM, Eric Evans wrote: >> https://www.w3.org/Addressing/draft-mirashi-url-irc-01.txt >> >> irc://freenode.net/#cassandra > > Hrmm, that seems like more of a candidate for a channel name link, no? > For example: > > Many of the C

Re: Broken links in Apache Cassandra home page

2016-03-03 Thread Eric Evans
On Wed, Mar 2, 2016 at 1:55 PM, Robert Coli wrote: > On Wed, Mar 2, 2016 at 7:00 AM, Eric Evans wrote: >> >> On Tue, Mar 1, 2016 at 8:30 PM, ANG ANG wrote: >> > "#cassandra channel": http://freenode.net/ >> >> The latter, while not presently usefu

Re: Broken links in Apache Cassandra home page

2016-03-02 Thread Eric Evans
issues > (e.g., outdated documentation, broken links)? There is a "Documentation and Website" component in Jira (https://issues.apache.org/jira/browse/CASSANDRA) you could use if you like. Raising the issue here is probably enough though. Thanks for the report, -- Eric Evans eev...@wikimedia.org

Re: Possible to adjust tokens on a vnode cluster?

2016-01-19 Thread Eric Evans
-2193-4f32-8426-3bd7ad8bf679 1a > UN 744.12 GB 256 13.9% > ff841094-7624-4dc5-b480-f39138b7f17c 1b > > 156GB might seem like a lot, but those extremes are less than 3% away; How close do really need it to be (and why)? -- Eric Evans eev...@wikimedia.org

Re: Using cassandra a BLOB store / web cache.

2016-01-19 Thread Eric Evans
e to the number of versions stored. If versions are added at a low rate, that might not pose an issue in practice, if it does though you'll need to consider a different partitioning strategy. TL;DR You need to understand what your data will look like. Min and max value sizes aren't enough,

Re: Adding New Nodes/Data Center to an existing Cluster.

2015-08-31 Thread Eric Evans
on? > https://issues.apache.org/jira/browse/CASSANDRA-9624, maybe? -- Eric Evans eev...@wikimedia.org

[ANN] Apache Cassandra 2.1.0-rc4 release candidate

2014-07-19 Thread Eric Evans
log;h=refs/tags/cassandra-2.1.0-rc4 -- Eric Evans eev...@sym-link.com signature.asc Description: Digital signature

[RELEASE] Apache Cassandra 2.0.4

2013-12-30 Thread Eric Evans
apache.org/~eevans (Debian package) -- Eric Evans eev...@sym-link.com signature.asc Description: Digital signature

Re: [RELEASE] Apache Cassandra 2.0.0 RC 1

2013-08-08 Thread Eric Evans
hu, Aug 8, 2013 at 1:44 PM, Eric Evans wrote: > > > > > The Cassandra team is pleased to announce the first release candidate for > > Apache Cassandra 2.0.0. > > > > As a release candidate, we're working to establish that this is relatively > > free o

[RELEASE] Apache Cassandra 2.0.0 RC 1

2013-08-08 Thread Eric Evans
txt) [3]: https://issues.apache.org/jira/browse/CASSANDRA -- Eric Evans eev...@sym-link.com

[RELEASE] Apache Cassandra 1.2.8

2013-07-28 Thread Eric Evans
[2]: http://goo.gl/bQ3a4i (CHANGES.txt) [3]: http://goo.gl/Zj1JFa (NEWS.txt) [4]: https://issues.apache.org/jira/browse/CASSANDRA -- Eric Evans eev...@sym-link.com

[RELEASE] Apache Cassandra 1.1.11

2013-04-19 Thread Eric Evans
. Enjoy, [1]: http://goo.gl/QfZlg (CHANGES.txt) [2]: http://goo.gl/O55QF (NEWS.txt) [3]: https://issues.apache.org/jira/browse/CASSANDRA [4]: http://goo.gl/KbiRm (CHEC) -- Eric Evans eev...@sym-link.com

Re: Problems with shuffle

2013-04-08 Thread Eric Evans
on 10.0.1.1! >Failed to enable shuffling on 10.0.1.3! Is that the verbatim output? Did it report failing to enable when you tried to disable? As a rule of thumb though, you don't want an disable/enable to result in only a subset of nodes shuffling. Are there no other errors? What d

Re: Unsubscribe

2013-03-20 Thread Eric Evans
[ Jeffrey Fass ] > Unsubscribe Unlikely. -- Eric Evans eev...@sym-link.com

Re: unsubscribe

2013-02-21 Thread Eric Evans
On Tue, Feb 19, 2013 at 1:02 PM, Anurag Gujral wrote: > > Unsubscribe me please. > Thanks Could I interest you in picture of a lemur instead? http://goo.gl/RZw3e -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: virtual nodes + map reduce = too many mappers

2013-02-16 Thread Eric Evans
ectations. I don't see where we've failed here, but I'm definitely open to hearing that I'm wrong (or how we could have done better). > On Fri, Feb 15, 2013 at 11:10 PM, Eric Evans wrote: >> On Fri, Feb 15, 2013 at 7:01 PM, Edward Capriolo >> wrote: >>>

Re: Upgrade to Cassandra 1.2

2013-02-15 Thread Eric Evans
stax.com/dev/blog/upgrading-an-existing-cluster-to-vnodes >>>>>>> >>>>>>> $ ./cassandra-shuffle --help >>>>>>> Missing sub-command argument. >>>>>>> Usage: shuffle [options] >>>>>>> >>>>>>> Sub-commands: >>>>>>> create Initialize a new shuffle operation >>>>>>> ls List pending relocations >>>>>>> clearClear pending relocations >>>>>>> en[able] Enable shuffling >>>>>>> dis[able]Disable shuffling >>>>>>> >>>>>>> Options: >>>>>>> -dc, --only-dc Apply only to named DC (create only) >>>>>>> -tp, --thrift-port Thrift port number (Default: 9160) >>>>>>> -p, --port JMX port number (Default: 7199) >>>>>>> -tf, --thrift-framed Enable framed transport for Thrift >>>>>>> (Default: false) >>>>>>> -en, --and-enableImmediately enable shuffling (create only) >>>>>>> -H, --help Print help information >>>>>>> -h, --host JMX hostname or IP address (Default: >>>>>>> localhost) >>>>>>> -th, --thrift-host Thrift hostname or IP address (Default: >>>>>>> JMX host) >>>>>>> >>>>>>> Cheers >>>>>>> >>>>>>> - >>>>>>> Aaron Morton >>>>>>> Freelance Cassandra Developer >>>>>>> New Zealand >>>>>>> >>>>>>> @aaronmorton >>>>>>> http://www.thelastpickle.com >>>>>>> >>>>>>> On 3/02/2013, at 11:32 PM, Manu Zhang >>>>>>> wrote: >>>>>>> >>>>>>> On Sun 03 Feb 2013 05:45:56 AM CST, Daning Wang wrote: >>>>>>> >>>>>>> I'd like to upgrade from 1.1.6 to 1.2.1, one big feature in 1.2 is >>>>>>> that it can have multiple tokens in one node. but there is only one >>>>>>> token in 1.1.6. >>>>>>> >>>>>>> how can I upgrade to 1.2.1 then breaking the token to take advantage >>>>>>> of this feature? I went through this doc but it does not say how to >>>>>>> change the num_token >>>>>>> >>>>>>> http://www.datastax.com/docs/1.2/install/upgrading >>>>>>> >>>>>>> Is there other doc about this upgrade path? >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> Daning >>>>>>> >>>>>>> >>>>>>> I think for each node you need to change the num_token option in >>>>>>> conf/cassandra.yaml (this only split the current range into num_token >>>>>>> parts) >>>>>>> and run the bin/cassandra-shuffle command (this spread it all over the >>>>>>> ring). >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>> >> > -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: virtual nodes + map reduce = too many mappers

2013-02-15 Thread Eric Evans
t; >> Any suggestion to improve the performance? It seems like I need to lower the >> number of virtual nodes. >> >> Best Regards, >> Cem >> >> -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: subscribe request

2013-02-14 Thread Eric Evans
t; 3111 Siebel Center, > 201 N. Goodwin Avenue, > Urbana, IL 61801 -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unbalanced ring

2013-02-07 Thread Eric Evans
s. The biggest question is of > Load. Why does the .125 node have 2.85 GB, .126 has 1.15 GB, and .127 has > only 0.69 GB? These boxes are all comparable and all configured > identically. > > > > partitioner: org.apache.cassandra.dht.Murmur3Partitioner > > > > I’m sorry to ask so many questions – I’m having a hard time finding > documentation that explains this stuff. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Clarification on num_tokens setting

2013-02-05 Thread Eric Evans
; In other words it is cluster wide parameter. Correct? > > Yes. Actually, num_tokens is a per node setting. It might make sense for example to assign different numbers of tokens in a cluster with heterogeneous hardware, but I would urge caution as there is currently no way post facto way to

Re: unsubscribe

2013-01-28 Thread Eric Evans
http://i.imgur.com/2ch9L.gif On Mon, Jan 28, 2013 at 8:36 AM, Olivier Devos wrote: > unsubscribe > -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2013-01-17 Thread Eric Evans
t provide legal, accounting or tax advice. > Any statement regarding legal, accounting or tax matters was not intended > or written to be relied upon by any person as advice. Moon Capital does not > waive confidentiality or privilege as a result of this email. > -- Eric Evans Acunu | http://www.acunu.com | @acunu <>

Re: [VOTE] Release Apache Cassandra 1.1.9

2013-01-14 Thread Eric Evans
> The artifacts as well as the debian package are also available here: > http://people.apache.org/~slebresne/ > > The vote will be open for 72 hours (longer if needed). +1 -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Vnode migration path

2012-12-12 Thread Eric Evans
gt; > > -- > Richard Low > Acunu | http://www.acunu.com | @acunu > > -- > 'Like' us on Facebook for exclusive content and other resources on all > Barracuda Networks solutions. > Visit http://barracudanetworks.com/facebook > ­­ -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-11-16 Thread Eric Evans
http://i1.kym-cdn.com/photos/images/newsfeed/000/263/866/403.gif On Thu, Nov 15, 2012 at 2:02 PM, Kartik Padmanabhan wrote: > -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Insert via CQL

2012-11-02 Thread Eric Evans
On Fri, Nov 2, 2012 at 8:09 PM, Vivek Mishra wrote: > any idea, how to insert into a column family for a column of type "blob" via > cql query? Yes, most of them involve binary data that is hex-encoded ascii. :) -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: distribution of token ranges with virtual nodes

2012-11-02 Thread Eric Evans
speak of from a computational or IO perspective. On the other hand, shuffling requires moving tokens around the cluster. If you completely randomize placement, it follows that you will need to relocate all of the clusters data, so it's quite costly. It's also precedent setting, and not thor

Re: distribution of token ranges with virtual nodes

2012-10-31 Thread Eric Evans
.e. num_tokens: 1), then it will migrate you to virtual nodes by splitting the existing partition 256 ways. This is *not* the equivalent of starting a node with num_tokens = 256 for the first time. The latter would leave you with randomized placement, the former would require you to perform a

Re: Java 7 support?

2012-10-24 Thread Eric Evans
; On Oct 23, 2012, at 11:12 PM, Eric Evans wrote: > >> On Tue, Oct 16, 2012 at 7:54 PM, Rob Coli wrote: >>> On Tue, Oct 16, 2012 at 4:45 PM, Edward Sargisson >>> wrote: >>>> The Datastax documentation says that Java 7 is not recommended[1]. However, >&g

Re: Java 7 support?

2012-10-23 Thread Eric Evans
ther channels, I have conjectured that the current advice on > Java 7 is "it 'works' but is not as extensively tested (and definitely > not as commonly deployed) as Java 6". That sounds about right. The best way to change the status quo would be to use Java 7, report any b

ApacheCon EU -- Hackathon anyone?

2012-10-16 Thread Eric Evans
. This is broad enough that people of all skill levels should be able to contribute. So, is anyone interested? [1]: 5–8 November, Sinsheim, Germany [2]: Guy Fawkes Day! [3]: http://wiki.apache.org/apachecon/HackathonEU12 -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-10-03 Thread Eric Evans
On Wed, Oct 3, 2012 at 1:50 PM, Tomek Kuprowski wrote: > unsubscribe http://assets0.ordienetworks.com/misc/bf7.gif -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-09-25 Thread Eric Evans
On Tue, Sep 25, 2012 at 1:23 PM, puneet loya wrote: > http://goo.gl/JcMcr -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-08-29 Thread Eric Evans
notify us by reply message and we will send the contents to you. By > messaging with Morgan Stanley you consent to the foregoing. To unsubscribe from the list, you must send your 130 word boilerplate disclaimer to user-unsubscr...@cassandra.apache.org. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-08-27 Thread Eric Evans
ify you by email, and will now proceed to destroy the original message. Please don't sue me. Love, -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Cassandra upgrade 1.1.4 issue

2012-08-24 Thread Eric Evans
hat might provide some insight (and if you don't, it wouldn't hurt to get one). Cheers, -- Eric Evans Acunu | http://www.acunu.com | @acunu

[RELEASE] Apache Cassandra 1.1.4 released

2012-08-20 Thread Eric Evans
binary distributions are listed on the download page of the website: http://cassandra.apache.org/download Cheers, [1]: http://goo.gl/Iu7W3 (CHANGES.txt) [2]: http://goo.gl/yi8Iu (NEWS.txt) [3]: https://issues.apache.org/jira/browse/CASSANDRA -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-07-31 Thread Eric Evans
On Mon, Jul 30, 2012 at 8:31 PM, Alvin UW wrote: > thx http://wiki.apache.org/cassandra/FAQ#unsubscribe You are welcome. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: 1.0.6 -> 1.1.0 nodetool ownership report, and other anomalies

2012-05-17 Thread Eric Evans
creation code to explicitly set compression to > the previous JavaDeflate default.  That new default was annoying. It doesn't ring a bell; For something like this, it would be great to have a ticket with details on your environment, steps to reproduce, the full output of the logs, and where possible, the data. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: FW: Cassandra Range Queries Help Needed

2012-05-14 Thread Eric Evans
family trick. Any simple example > would be highly appreciated. Please email me back at ansa...@hotmail.com I read that as advice to reexamine your data model so that queries are performed on rows (slices), and not for them (range queries). -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Misleading CQL behaviour regarding LIMIT clause

2012-05-04 Thread Eric Evans
erid = '%s' AND created >= '%s' AND > created <= '%s' LIMIT 100 My guess would be that, total number of rows in the columnfamily notwithstanding, there are only 79 for the given the predicates. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-05-02 Thread Eric Evans
On Tue, May 1, 2012 at 9:05 AM, Gmail wrote: > unsubscribe http://qkme.me/35w46c -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Cassandra and harddrives

2012-04-25 Thread Eric Evans
gt; all nodes? > > What is the recommended way to do this? You can't share storage like this, no; Each Cassandra node will need it's own -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: Unsubscribe

2012-04-24 Thread Eric Evans
On Tue, Apr 24, 2012 at 8:13 AM, wrote: > Sent from my Galaxy S2 This won't work, even from a Galaxy S2. Try http://wiki.apache.org/cassandra/FAQ#unsubscribe instead. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: insert in cql

2012-04-11 Thread Eric Evans
#x27; > > do you find any error here? Yes. KEY here is presumably the row key (aka PRIMARY KEY) and you cannot store an otherwise empty row, you need at least one actual column. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: CQL, How to insert Bytes

2012-02-24 Thread Eric Evans
efers to the docs by datastax, or > other other posts in this mailing list. While it's meant more as a language specification than a guide, http://cassandra.apache.org/doc/cql/CQL.html might prove helpful. Unfortunately, Cassandra is documented about as well as most open-source projects. :(

Re: CQL, How to insert Bytes

2012-02-24 Thread Eric Evans
or = blob) will allow you have all column names as bytes, and likewise, default_validation = blob will make bytes the default for column values. If you want to create schema for specific columns that have binary names, you can not (yet) do that. > 2012/2/24 Eric Evans : >> On Fri, Feb 2

Re: CQL, How to insert Bytes

2012-02-24 Thread Eric Evans
On Fri, Feb 24, 2012 at 9:28 AM, Montgomery Burns wrote: > what do I use in order to insert bytes instead of characters into a > column, using CQL with the Thrift-client? Assuming the type is 'blob' (bytes), use hex encoding. -- Eric Evans Acunu | http://www.acunu.com | @acunu

[ANN] Cassandra Europe 2012

2012-02-21 Thread Eric Evans
acunu.com) is hosting the event at London's Hilton Metropole, and an afterparty nearby afterwards - details TBD! We hope to see you there! Contact Konrad Kennedy if you have any questions. Your friendly Cassandra Europe organizers. -- Eric Evans Acunu | http://www.acunu.com | @acunu

Re: unsubscribe

2012-02-20 Thread Eric Evans
http://goo.gl/lQJC2 On Mon, Feb 20, 2012 at 3:39 PM, Bhupendra Babu wrote: > > > -- > Thanks. > Bhupendra B Babu -- Eric Evans Acunu | http://www.acunu.com | @acunu

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