[RELEASE] Apache Cassandra 4.0.13 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 4.0.13. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 4.1.5 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 4.1.5. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

Re: [RELEASE] Apache Cassandra 4.0.8 released

It was reported in CASSANDRA-18307 that the Debian and Redhat packages for 4.0.8 did not make it to the jfrog repository - this has now been corrected, sorry for any inconvenience. Kind Regards, Brandon On Tue, Feb 14, 2023 at 3:39 PM Miklosovic, Stefan wrote: > > The Cassandra team is pleased

Re: [RELEASE] Apache Cassandra 4.0.2 released

Agreed, I've opened CASSANDRA-17376 to handle this. On Fri, Feb 11, 2022 at 4:44 PM Jeff Jirsa wrote: > > We don't HAVE TO remove the Config.java entry - we can mark it as deprecated > and ignored and remove it in a future version (and you could update > Config.java to log a message about

Re: Log4j vulnerability

https://issues.apache.org/jira/browse/CASSANDRA-5883 As that ticket shows, Apache Cassandra has never used log4j2. On Sat, Dec 11, 2021 at 11:07 AM Abdul Patel wrote: > > Hi all, > > Any idea if any of open source Cassandra versions are impacted with log4j > vulnerability which was reported on

[RELEASE] Apache Cassandra 3.11.11 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.11.11. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 3.0.25 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.25. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

[RELEASE] Apache Cassandra 4.0.0 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 4.0.0. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source

CVE-2016-3427 Apache Cassandra Unspecified vulnerability related to JMX

Versions Affected: All versions prior to: 2.1.22, 2.2.18, 3.0.22, 3.11.8 and 4.0-beta2 Description: Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77; and JRockit R28.3.9 allows remote attackers to affect confidentiality, integrity, and availability via

Re: Cassandra Needs to Grow Up by Version Five!

The only progress from this point is what Jon said: enumerate and detail your issues in jira tickets. On Wed, Feb 21, 2018 at 4:53 PM, Kenneth Brotman < kenbrot...@yahoo.com.invalid> wrote: > Hi Akash, > > I get the part about outside work which is why in replying to Jeff Jirsa I > was

Re: Definition of QUORUM consistency level

I don't disagree with you there and have never liked TWO/THREE. This is somewhat relevant: https://issues.apache.org/jira/browse/CASSANDRA-2338 I don't think going to CL.FOUR, etc, is a good long-term solution, but I'm also not sure what is. On Thu, Jun 8, 2017 at 11:20 PM, Dikang Gu

Re: Definition of QUORUM consistency level

We have CL.TWO. On Thu, Jun 8, 2017 at 10:03 PM, Dikang Gu wrote: > So, for the quorum, what we really want is that there is one overlap among > the nodes in write path and read path. It actually was my assumption for a > long time that we need (N/2 + 1) for write and just

Re: unbalanced ring

On Tue, Feb 12, 2013 at 6:13 PM, Edward Capriolo edlinuxg...@gmail.com wrote: Are vnodes on by default. It seems that many on list are using this feature with small clusters. They are not. -Brandon

Re: Pig / Map Reduce on Cassandra

On Wed, Jan 16, 2013 at 2:37 PM, cscetbon@orange.com wrote: Here is the point. You're right this github repository has not been updated for a year and a half. I thought brisk was just a bundle of some technologies and that it was possible to install the same components and make them work

Re: leveled compaction and tombstoned data

On Thu, Nov 8, 2012 at 1:33 PM, Aaron Turner synfina...@gmail.com wrote: There are also ways to bring up a test node and just run Level Compaction on that. Wish I had a URL handy, but hopefully someone else can find it. This rather handsome fellow wrote a blog about it:

Re: distribution of token ranges with virtual nodes

On Thu, Nov 1, 2012 at 10:05 PM, Manu Zhang owenzhang1...@gmail.com wrote: it will migrate you to virtual nodes by splitting the existing partition 256 ways. Out of curiosity, is it for the purpose of avoiding streaming? It splits into a contiguous range, because truly upgrading to vnode

Re: Hinted Handoff runs every ten minutes

On Sun, Oct 21, 2012 at 6:44 PM, aaron morton aa...@thelastpickle.com wrote: I *think* this may be ghost rows which have not being compacted. You would be correct in the case of 1.0.8: https://issues.apache.org/jira/browse/CASSANDRA-3955 -Brandon

Re: Bringing a dead node back up after fixing hardware issues

On Wed, Jul 25, 2012 at 6:16 PM, Eran Chinthaka Withana eran.chinth...@gmail.com wrote: Alright, lets assume I want to go on this route. I have RF=2 in the data center and I believe I need at least RF=3 to set the replication to LOCAL_QUORUM and hide the node failures. But if I increase the RF

Re: Bringing a dead node back up after fixing hardware issues

On Mon, Jul 23, 2012 at 10:24 PM, Eran Chinthaka Withana eran.chinth...@gmail.com wrote: Thanks Brandon for the answer (and I didn't know driftx = Brandon Williams. Thanks for your awesome support in Cassandra IRC) Thanks :) Increasing CL is tricky for us for now, as our RF on that datacenter

Re: Bringing a dead node back up after fixing hardware issues

On Mon, Jul 23, 2012 at 6:26 PM, Eran Chinthaka Withana eran.chinth...@gmail.com wrote: Method 1: I copied the data from all the nodes in that data center, into the repaired node, and brought it back up. But because of the rate of updates happening, the read misses started going up. That's not

Re: bulk load glitch

On Mon, Jul 2, 2012 at 10:35 AM, Brian Jeltema brian.jelt...@digitalenvoy.net wrote: I can't tell whether the bulk load process recovered from the transient dead node, or whether I need to start over. Does anybody know? You need to start over if the failure detector tripped, but it will

Re: Problem joining new node to cluster in 1.1.1

This sounds related to https://issues.apache.org/jira/browse/CASSANDRA-4251 On Thu, Jun 7, 2012 at 5:28 PM, Bryce Godfrey bryce.godf...@azaleos.com wrote: As the new node starts up I get this error before boostrap starts: INFO 08:20:51,584 Enqueuing flush of

Re: memory issue on 1.1.0

Perhaps the deletes: https://issues.apache.org/jira/browse/CASSANDRA-3741 -Brandon On Sun, Jun 3, 2012 at 6:12 PM, Poziombka, Wade L wade.l.poziom...@intel.com wrote: Running a very write intensive (new column, delete old column etc.) process and failing on memory.  Log file attached.

Re: nodes moving spontaneously

Nodes don't move themselves, you likely have some kind of 'bouncing gossip' issue where a node was removed/replaced and is hanging around, but only periodically held in statee between nodes. Unfortunately node removal is very prone to this before 0.8.3 and even after that, you can't fix it

Re: Migrating from a windows cluster to a linux cluster.

On Thu, May 24, 2012 at 12:41 PM, Henrik Schröder skro...@gmail.com wrote: We're running version 1.0.8. Is this fixed in a later release? Will this be fixed in a later release? No, mixed-OS clusters are unsupported. Are there any other ways of doing the migration? What happens if we join the

Re: Migrating from a windows cluster to a linux cluster.

On Thu, May 24, 2012 at 1:50 PM, Henrik Schröder skro...@gmail.com wrote: Ok. It's important for us to not have any downtime, so how about this solution: We startup the Linux cluster independently. We configure our application to send all Cassandra writes to both clusters, but only read from

Re: Migrating from a windows cluster to a linux cluster.

On Thu, May 24, 2012 at 3:36 PM, Henrik Schröder skro...@gmail.com wrote: That sounds fine, with the caveat that you can't run sstableloader from a machine running Cassandra before 1.1, so copying the sstables manually (assuming both clusters are the same size and have the same tokens) might

Re: Replication factor

On Wed, May 23, 2012 at 5:51 AM, Viktor Jevdokimov viktor.jevdoki...@adform.com wrote: When RF == number of nodes, and you read at CL ONE you will always be reading locally. “always be reading locally” – only if Dynamic Snitch is “off”. With dynamic snitch “on” request may be

Re: How do I add a custom comparator class to a cassandra cluster ?

On Tue, May 15, 2012 at 12:53 AM, Ertio Lew ertio...@gmail.com wrote: @Brandon : I just created a jira issue to request this type of comparator along with Cassandra. It is about a UTF8 comparator that provides case insensitive ordering of columns. See issue here :

Re: Snapshot failing on JSON files in 1.1.0

Probably https://issues.apache.org/jira/browse/CASSANDRA-4230 On Tue, May 15, 2012 at 4:08 PM, Bryan Fernandez bfernande...@gmail.com wrote: Greetings, We recently upgraded from 1.0.8 to 1.1.0. Everything has been running fine with the exception of snapshots. When attempting to snapshot any

Re: How do I add a custom comparator class to a cassandra cluster ?

On Mon, May 14, 2012 at 1:11 PM, Ertio Lew ertio...@gmail.com wrote: I need to add a custom comparator to a cluster, to sort columns in a certain customized fashion. How do I add the class to the cluster  ? I highly recommend against doing this, because you'll be locked in to your comparator

Re: stream data using bulkoutputformat on hdfs?

On Wed, May 2, 2012 at 2:23 PM, Shawna Qian shaw...@yahoo-inc.com wrote: Hello: I am trying to use bulkoutputformat and seeing some nice docs on how to use it to stream the data to an existing cassandra cluster using configHelper class.  I am wondering if it is possible to use it just to

Re: how to increase compaction rate?

On Mon, Mar 12, 2012 at 4:44 AM, aaron morton aa...@thelastpickle.com wrote: I don't understand why I don't get multiple concurrent compactions running, that's what would make the biggest performance difference. concurrent_compactors Controls how many concurrent compactions to run, by

Re: Several times hinted handoff for the same node with Cassandra 1.0.8

Just ignore it: https://issues.apache.org/jira/browse/CASSANDRA-3955 On Mon, Mar 12, 2012 at 9:31 PM, Roshan codeva...@gmail.com wrote: Hi I have upgrade our development Cassandra cluster (2 nodes) from 1.0.6 to 1.0.8 version. After upgrade to 1.0.8 version, one node keep trying to send

Re: Node joining / unknown

On Wed, Mar 7, 2012 at 3:37 AM, aaron morton aa...@thelastpickle.com wrote: 2) Stop the node. Try to get remove the token again from another node. Node that removing a token will stream data around the place as well. A node that has never fully joined doesn't need to be removed (and can't.)

Re: avoid log spam with 0 HH rows delivered

https://issues.apache.org/jira/browse/CASSANDRA-3955 On Fri, Mar 2, 2012 at 1:53 AM, Radim Kolar h...@sendmail.cz wrote: Can be something made to remove these empty delivery attempts from log? Its just tombstoned row. [default@system] list HintsColumnFamily; Using default limit of 100

Re: Only the last added node is visible in the cluster

My guess would be you're using the same token everywhere. -Brandon On Sat, Feb 25, 2012 at 9:48 AM, Aditya Gupta ady...@gmail.com wrote: While creating a multinode cluster, my nodes are unable to identify all the nodes in the cluster. Only the *last added'  node is visible when I do:  

Re: Only the last added node is visible in the cluster

, I just re-verified :) I have split up the range into 4 parts for 4 nodes. I have specified that in the intial_token On Sun, Feb 26, 2012 at 12:33 AM, Brandon Williams dri...@gmail.com wrote: My guess would be you're using the same token everywhere. -Brandon On Sat, Feb 25, 2012 at 9:48

Re: Only the last added node is visible in the cluster

On Sat, Feb 25, 2012 at 3:39 PM, Aditya Gupta ady...@gmail.com wrote: The output of nodetool ring after each addition of nodes, make just the last added node visible in the ring. When I retry to add the node(which are not visible) it says that it is already a part of the ring. Could you

Re: Cassandra keeps on logging Finished hinted handoff of 0 rows to endpoint

It's a special case of a single sstable existing for hints: https://issues.apache.org/jira/browse/CASSANDRA-3955 On Fri, Feb 24, 2012 at 5:43 AM, Manoj Mainali mainalima...@gmail.com wrote: Hi, I have been running Cassandra 1.0.7 and in the log file I see the log saying  Finished hinted 

Re: data model advice

On Fri, Feb 24, 2012 at 10:46 AM, David Leimbach leim...@gmail.com wrote: On Thu, Feb 23, 2012 at 7:54 PM, Martin Arrowsmith arrowsmith.mar...@gmail.com wrote: Hi Franc, Or, you can consider using composite columns. It is not recommended to use Super Columns anymore. Yes, but why?  Is

Re: cassandra on ec2 lock-ups

http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs On Fri, Feb 17, 2012 at 7:00 AM, Pierre-Yves Ritschard p...@spootnik.org wrote: Hi, I've experienced several node lock-ups on EC2 instances. I'm running with the following set-up: heap-new: 800M max-heap: 8G instance type: m2.xlarge

Re: nodetool removetoken

Before 1.0.8, use https://issues.apache.org/jira/browse/CASSANDRA-3337 to remove it. On Tue, Feb 14, 2012 at 3:44 PM, Franc Carter franc.car...@sirca.org.au wrote: I teminated (ec2 destruction) a node that I was wedged during bootstrap. However when I try to removetoken I get 'Token not

Re: truncate command fails

On Tue, Feb 7, 2012 at 2:17 AM, Patrik Modesto patrik.mode...@gmail.com wrote: Hi, I've a strange problem with my test cluster. Calling truncate on a small ColumnFamily on idle cluster of 4 nodes returns UnavailableException after 10s. That 10s is set in rpc_timeout_in_ms. Make sure you have

Re: Any tools like phpMyAdmin to see data stored in Cassandra ?

On Sun, Jan 29, 2012 at 11:52 PM, Ertio Lew ertio...@gmail.com wrote: On Mon, Jan 30, 2012 at 7:16 AM, Frisch, Michael michael.fri...@nuance.com wrote: OpsCenter? http://www.datastax.com/products/opscenter Thanks, that's a great product but unfortunately doesn't work with windows. Now

Re: Can I use BulkOutputFormat from 1.1 to load data to older Cassandra versions?

On Mon, Jan 9, 2012 at 1:18 AM, Erik Forsberg forsb...@opera.com wrote: Hi! Can the new BulkOutputFormat (https://issues.apache.org/jira/browse/CASSANDRA-3045) be used to load data to servers running cassandra 0.8.7 and/or Cassandra 1.0.6? I'm thinking of using jar files from the

Re: Copy a column family?

On Mon, Jan 9, 2012 at 9:14 AM, Brian O'Neill b...@alumni.brown.edu wrote: What is the fastest way to copy a column family? We were headed down the map/reduce path, but that seems silly. Any file level mechanisms for this? Copy all the sstables 1:1 renaming them to the new CF name. Then

Re: Copy a column family?

On Mon, Jan 9, 2012 at 11:34 AM, Philippe watche...@gmail.com wrote: Would this apply to copying data from one cluster to another, assuming I do a rolling drain and shutdown ? Thanks Only if the tokens also match 1:1 and you copy to the same tokens. If they don't match, the easiest thing to

Re: What is the future of supercolumns ?

On Sat, Jan 7, 2012 at 5:42 PM, Rustam Aliyev rus...@code.az wrote: My suggestion is simple: don't use any deprecated stuff out there. In practically any case there is a good reason why it's deprecated. SuperColumns are not deprecated. The supercolumn API will remain:

Re: about decommissioned node that returns

On Tue, Dec 20, 2011 at 2:24 PM, aaron morton aa...@thelastpickle.com wrote: Sorry, got that a little wrong. At startup the node will use the higher of the current seconds since epoch or the stored generation number. Technically stored generation + 1 so it's always increased on a restart.

Re: memory estimate for each key in the key cache

On Fri, Dec 16, 2011 at 8:52 PM, Kent Tong freemant2...@yahoo.com wrote: Hi, From the source code I can see that for each key, the hash (token), the key itself (ByteBuffer) and the position (long. offset in the sstable) are stored into the key cache. The hash is an MD5 hash, so it is 16

Re: memory estimate for each key in the key cache

On Fri, Dec 16, 2011 at 9:31 PM, Dave Brosius dbros...@mebigfatguy.com wrote: Wow, Java is a lot better than I thought if it can perform that kind of magic.  I'm guessing the wiki information is just old and out of date. It's probably more like 60 + sizeof(key) With jamm and MAT it's fairly

Re: Keys for deleted rows visible in CLI

http://wiki.apache.org/cassandra/FAQ#range_ghosts On Wed, Dec 14, 2011 at 4:36 AM, Radim Kolar h...@sendmail.cz wrote: Dne 14.12.2011 1:15, Maxim Potekhin napsal(a): Thanks. It could be hidden from a human operator, I suppose :) I agree. Open JIRA for it.

Re: configurable bloom filters (like hbase)

https://issues.apache.org/jira/browse/CASSANDRA-3497 On Wed, Dec 14, 2011 at 4:52 AM, Radim Kolar h...@sendmail.cz wrote: Dne 11.11.2011 7:55, Radim Kolar napsal(a): i have problem with large CF (about 200 billions entries per node). While i can configure index_interval to lower memory

Re: Cannot Start Cassandra 1.0.5 with JNA on the CLASSPATH

On Sun, Dec 11, 2011 at 3:23 AM, Caleb Rackliffe ca...@steelhouse.comwrote: Hi All, I'm trying to start up Cassandra 1.0.5 on a Cent OS 6 machine. I installed JNA through yum and made a symbolic link to jna.jar in my Cassandra lib directory. When I run bin/cassandra -f, I get the

Re: Really old files in the data directory

On Fri, Dec 9, 2011 at 1:57 PM, Edward Capriolo edlinuxg...@gmail.com wrote: Are you taking snapshots? If the file is referenced in a snapshot it will not delete until it is also not part of any snapshot. That isn't true. The file will be removed from the data dir, but still exist in the

Re: Cassandra 0.8.8

http://cassandra.apache.org/download/ On Fri, Dec 9, 2011 at 3:37 PM, Maxim Potekhin potek...@bnl.gov wrote: Hello everyone, so what's the update on 0.8.8? Many thanks Maxim On 12/2/2011 4:49 AM, Patrik Modesto wrote: Hi, It's been almost 2 months since the release of the 0.8.7

Re: decommissioned not show being gossipped

On Thu, Dec 1, 2011 at 12:26 PM, huyle hu...@springpartners.com wrote: Hi, We have 2 nodes have been decommissioned from the cluster running 1.0.3. However, the live nodes still making references to the decommissioned nodes 3 days after the nodes were decommissioned.  Nodetool does not show

Re: decommissioned not show being gossipped

On Thu, Dec 1, 2011 at 1:10 PM, huyle hu...@springpartners.com wrote: The clocks are very sync'ed between the nodes as they have ntp running hitting our time servers. Maybe they weren't 3 days after the token left, which https://issues.apache.org/jira/browse/CASSANDRA-2961 requires. If a node

Re: [RELEASE] Apache Cassandra 1.0.5 released

On Wed, Nov 30, 2011 at 1:29 PM, Michael Vaknine micha...@citypath.com wrote: The files are not on the site The requested URL /apache//cassandra/1.0.5/apache-cassandra-1.0.5-bin.tar.gz was not found on this server. It takes the mirrors some time to sync. -Brandon

Re: Local quorum reads

On Fri, Nov 18, 2011 at 4:23 PM, Anthony Ikeda anthony.ikeda@gmail.com wrote: This is the setup: Cassandra 0.8.6 3 nodes Keyspace: NetworkTopologyStrategy, 1DC, RF=2 1 node goes down and we cannot read from the ring. My expectation is that LOCAL_QUORUM dictates that it will return a

Re: BulkLoader

On Mon, Nov 14, 2011 at 2:49 PM, Giannis Neokleous gian...@generalsentiment.com wrote: Hello everyone, We're using the bulk loader to load data every day to Cassandra. The machines that use the bulkloader are diferent every day so their IP addresses change. When I do describe cluster i see

Re: Upgrade Cassandra Cluster to 1.0.2

On Mon, Nov 14, 2011 at 1:21 AM, Michael Vaknine micha...@citypath.com wrote: Hi, After configuring the encryption on Cassandra.yaml I get this error when upgrading from 1.0.0 to 1.0.2 Attached the log file with the errors. https://issues.apache.org/jira/browse/CASSANDRA-3466 -Brandon

Re: Upgrade Cassandra Cluster to 1.0.2

On Mon, Nov 14, 2011 at 7:53 AM, Michael Vaknine micha...@citypath.com wrote: Does this means that I have to wait to 1.0.3? In the meantime you can just delete the hints and rely on read repair or antientropy repair if you're concerned about the consistency of your replicas. -Brandon

Re: Upgrade Cassandra Cluster to 1.0.2

On Mon, Nov 14, 2011 at 8:06 AM, Michael Vaknine micha...@citypath.com wrote: Well, I tried to delete the hints on the failed cluster but I could not start it I got other errors such as ERROR [MutationStage:34] 2011-11-14 15:37:43,813 AbstractCassandraDaemon.java (line 133) Fatal exception

Re: Upgrade Cassandra Cluster to 1.0.2

On Sun, Nov 13, 2011 at 4:35 AM, Michael Vaknine micha...@citypath.com wrote: I am trying to upgrade to 1.0.2 and when I try to start the first upgraded server I get the following error ERROR [WRITE-/10.5.6.102] 2011-11-13 10:20:37,447 AbstractCassandraDaemon.java (line 133) Fatal exception

Re: Upgrade Cassandra Cluster to 1.0.2

not understand why version 1.0.0 was not affected since I used the same configuration yaml file. Thank you. Michael Vaknine -Original Message- From: Brandon Williams [mailto:dri...@gmail.com] Sent: Sunday, November 13, 2011 4:48 PM To: user@cassandra.apache.org Cc: cassandra-u

Re: Mass deletion -- slowing down

On Sun, Nov 13, 2011 at 5:57 PM, Maxim Potekhin potek...@bnl.gov wrote: I've done more experimentation and the behavior persists: I start with a normal dataset which is searcheable by a secondary index. I select by that index the entries that match a certain criterion, then delete those. I

Re: Mass deletion -- slowing down

On Sun, Nov 13, 2011 at 6:55 PM, Maxim Potekhin potek...@bnl.gov wrote: Thanks to all for valuable insight! Two comments: a) this is not actually time series data, but yes, each item has a timestamp and thus chronological attribution. b) so, what do you practically recommend? I need to

Re: Mass deletion -- slowing down

On Sun, Nov 13, 2011 at 7:25 PM, Maxim Potekhin potek...@bnl.gov wrote: Each row represents a computational task (a job) executed on the grid or in the cloud. It naturally has a timestamp as one of its attributes, representing the time of the last update. This timestamp is used to group the

Re: decommissioned node still in LoadMap in JMX Management Console

On Wed, Nov 9, 2011 at 1:28 AM, Patrik Modesto patrik.mode...@gmail.com wrote: Hi, on our production cluster of 8 nodes which is running cassandra 0.8.7 we still see in the MBean org.apache.cassandra.db:type=StorageService.LoadMap in JMX Management console the 9th node we added for testing

Re: Using Cli to create a column family with column name metadata question

On Mon, Nov 7, 2011 at 7:36 PM, Arsene Lee arsene@ruckuswireless.com wrote: Hi, Thanks for the replay. I'm not talking about the column name. I'm talking about the column metadata's column name. Right now cli can't not display the column's meta name correctly if the comparator type is

Re: Second Cassandra users survey

On Fri, Nov 4, 2011 at 9:50 PM, Jim Newsham jnews...@referentia.com wrote: Our use case is time-series data (such as sampled sensor data).  Each row describes a particular statistic over time, the column name is a time, and the column value is the sample.  So it makes perfect sense to want to

Re: Why SSTable is sorted by tokens instead of row keys?

On Fri, Nov 4, 2011 at 7:49 AM, Gary Shi gary...@gmail.com wrote: I want to save time series event logs into Cassandra, and I need to load them by key range (row key is time-based). But we can't use RandomPartitioner in this way, while OrderPreservingPartitioner leads to hot spot problem. You

Re: Second Cassandra users survey

On Fri, Nov 4, 2011 at 9:19 PM, Jim Newsham jnews...@referentia.com wrote: - Bulk column deletion by (column name) range.  Without this feature, we are forced to perform a range query and iterate over all of the columns, deleting them one by one (we do this in a batch, but it's still a very

Re: Retreiving column by names Vs by range, which is more performant ?

On Thu, Nov 3, 2011 at 2:05 PM, Ertio Lew ertio...@gmail.com wrote: Retrieving columns by names vs by range which is more performant , when you have the options to do both ? Assuming the columns have never been overwritten, range has a small advantage. However, in the face of frequently

Re: Storing and querying IP ranges in Cassandra

On Tue, Nov 1, 2011 at 11:17 AM, Tamas Marki tma...@gmail.com wrote: Hello, I'm new to the list and also to Cassandra. I found it when I was searching for something to replace our busy mysql server. One of the things we use the server for is filtering IPs based on a list of IP ranges. These

Re: SimpleAuthenticator missing in Cassandra 1.0

On Thu, Oct 27, 2011 at 3:25 PM, RobinUs2 ro...@us2.nl wrote: It seems that org.apache.cassandra.auth.SimpleAuthenticator is missing in the cassandra 1.0 binaries. Is this on purpose or did I found a bug? From NEWS.txt: - The SimpleAuthenticator and SimpleAuthority classes have been moved

Re: Schema versions reflect schemas on unwanted nodes

On Fri, Oct 14, 2011 at 2:36 PM, Eric Czech e...@nextbigsound.com wrote: Thanks again.  I have truncated certain cf's recently and the cli didn't complain and listings of the cf rows return nothing after truncation.  Is that data not actually deleted? Hmm, well, now I'm confused because if

Re: Schema versions reflect schemas on unwanted nodes

You're running into https://issues.apache.org/jira/browse/CASSANDRA-3259 Try upgrading and doing a rolling restart. -Brandon On Thu, Oct 13, 2011 at 9:11 AM, Eric Czech e...@nextbigsound.com wrote: Nope, there was definitely no intersection of the seed nodes between the two clusters so I'm

Re: MapReduce with two ethernet cards

From: Brandon Williams [dri...@gmail.com] Sent: Monday, October 10, 2011 12:28 PM To: user@cassandra.apache.org Subject: Re: MapReduce with two ethernet cards On Mon, Oct 10, 2011 at 11:47 AM, Scott Fines scott.fi...@nisc.coop wrote: Hi all, This may be a silly

Re: Multi DC setup

On Tue, Oct 11, 2011 at 2:36 AM, Peter Schuller peter.schul...@infidyne.com wrote: Google/check wiki/read docs about NetworkTopologyStrategy and PropertyFileSnitch. I don't have a good link to multi-dc off hand (anyone got a good link to suggest that goes through this?).

Re: add bloomfilter results to nodetool?

On Tue, Oct 11, 2011 at 12:19 PM, Yang tedd...@gmail.com wrote: I find the info about bloomfilter very helpful, could we add that to NodeCmd ? Feel free to create a ticket and tag it 'lhf' -Brandon

Re: Volunteers needed - Wiki

On Mon, Oct 10, 2011 at 11:51 AM, hani elabed hani.ela...@gmail.com wrote: Hi Aaron, I can help with the documentation... I grabbed tons of screenshots as I was installing Cassandra source trunk(1.0.0.rc2?) on my Mac OS X Snow leopard on Eclipse Galileo and later Eclipse Indigo, I will be

Re: MapReduce with two ethernet cards

On Mon, Oct 10, 2011 at 11:47 AM, Scott Fines scott.fi...@nisc.coop wrote: Hi all, This may be a silly question, but I'm at a bit of a loss, and was hoping for some help. I have a Cassandra cluster set up with two NICs--one for internel communication between cassandra machines (10.1.1.*), and

Re: read on multiple SS tables

On Thu, Oct 6, 2011 at 3:56 PM, aaron morton aa...@thelastpickle.com wrote: -If you perform a query for a specific row key and a column name, does it read the most recent SSTable first and if it finds a hit, does it stop there or does it need to read through all the SStables (to find most

Re: help needed interpreting Read/Write latency in cfstats and cfhistograms output

On Mon, Oct 3, 2011 at 3:57 PM, Ramesh Natarajan rames...@gmail.com wrote: Thanks Aaron. The ms in the latency is it microseconds or milliseconds? I ran the 2 commands at the same time. I was expecting the values to be in the some what similar but from my output earlier ,  you can see the

Re: dedicated gossip lan

On Tue, Oct 4, 2011 at 2:00 PM, Sorin Julean sorin.jul...@gmail.com wrote: Hi,  Did anyone used a dedicated interfaces and LAN / VLAN for gossip traffic ?  Any benefits in such approach ? I don't think there is any substantial benefit to doing this, but also it's impossible: gossip is not

Re: frequent node UP/Down?

On Sat, Sep 24, 2011 at 4:54 PM, Yang tedd...@gmail.com wrote: I'm using 1.0.0 there seems to be too many node Up/Dead events detected by the failure detector. I'm using  a 2 node cluster on EC2, in the same region, same security group, so I assume the message drop rate should be

Re: frequent node UP/Down?

On Sun, Sep 25, 2011 at 12:52 PM, Yang tedd...@gmail.com wrote: Thanks Brandon. I suspected that, but I think that's precluded as a possibility since I setup another background job to do echo | nc other_box 7000 in a loop, this job seems to be working fine all the time, so network seems

Re: frequent node UP/Down?

On Sun, Sep 25, 2011 at 1:10 PM, Yang tedd...@gmail.com wrote: Thanks Brandon. I'll try this. but you can also see my later post regarding message drop :

Re: Nodetool removetoken taking days to run.

On Wed, Sep 14, 2011 at 8:54 AM, Ryan Hadley r...@sgizmo.com wrote: Hi, So, here's the backstory: We were running Cassandra 0.7.4 and at one point in time had a node in the ring at 10.84.73.18. We removed this node from the ring successfully in 0.7.4. It stopped showing in the nodetool

Re: Nodetool removetoken taking days to run.

On Wed, Sep 14, 2011 at 4:25 PM, Ryan Hadley r...@sgizmo.com wrote: Hi Brandon, Thanks for the reply. Quick question though: 1. We write all data to this ring with a TTL of 30 days 2. This node hasn't been in the ring for at least 90 days, more like 120 days since it's been in the ring.

Re: Cassandra 082 - Large swap memory

On Thu, Aug 25, 2011 at 11:42 PM, King JKing beuk...@gmail.com wrote: Dear Jonathan, Cassandra process has 63.5 GB virtual size. I mention about RES column in top. RES is 8.3G. Very large than 2.5G Used Memory Used show in JConsole. https://issues.apache.org/jira/browse/CASSANDRA-2868

Re: Completely removing a node from the cluster

On Tue, Aug 23, 2011 at 2:26 AM, aaron morton aa...@thelastpickle.com wrote: I'm running low on ideas for this one. Anyone else ? If the phantom node is not listed in the ring, other nodes should not be storing hints for it. You can see what nodes they are storing hints for via JConsole. I

Re: Ec2Snitch

You probably have other nodes that are NOT using the snitch yet, so they haven't populated DC/RACK info yet. The exceptions will stop when all snitches have been changed. On Wed, Aug 10, 2011 at 7:55 PM, Viliam Holub viliam.ho...@ucd.ie wrote: Hi, I tried to switch to Ec2Snith. Although it

Re: migrating from 0.6 to 0.8, java.io.IOError: ... cannot extend file to required size

On Tue, Aug 9, 2011 at 6:43 PM, ian douglas i...@armorgames.com wrote: Driftx on IRC: follow up on the list saying that disabling mmap fixed it Which is my code for I have no idea why this is happening, maybe someone else does :) -Brandon

Re: Cassandra-2252

On Tue, Aug 2, 2011 at 10:22 PM, Bill Hastings bllhasti...@gmail.com wrote: Oops. Sorry. Any information would be great. The class does not exist in trunk and appears unused in the 0.8 branch. -- Eric Evans

Re: cqlsh error using assume

'assume' is only valid in the cli, not cql. On Thu, Jul 21, 2011 at 7:59 AM, Stephen Pope stephen.p...@quest.com wrote: I’m trying to use cqlsh (on Windows) to get some values from my database using secondary indexes. I’m not sure if it’s something I’m doing or not (I can’t seem to find any

Re: JDBC CQL Driver unable to locate cassandra.yaml

Try another slash in file:/, ie file:// On Thu, Jul 14, 2011 at 10:55 AM, Derek Tracy trac...@gmail.com wrote: I tried putting the cassandra.yaml in the classpath but got the same error. Adding -Dcassandra.config=file:/path/to/cassandra.yaml did work. - Derek

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