Re: row cache vs frequent row updates vs write through row cache

On Fri, Nov 5, 2010 at 1:41 PM, Jeremy Davis jerdavis.cassan...@gmail.comwrote: I saw in the Riptano Tuning Cassandra slide deck that the row cache can be detrimental if there are a lot of updates to the cached row. Is this because the cache is not write through, and every update necessitates

Re: iteration does not yield all data with consistency ONE

On Thu, Nov 11, 2010 at 4:56 AM, Eric van Orsouw eric.van.ors...@eventis.nl wrote: I appears to me there is an inconsistency somewhere, I hope this info helps. get_range_slices does not perform read repair, so inconsistencies at cl.ONE won't be resolved. Invoke nodetool repair everywhere

Re: [RELEASE] 0.6.7

On Thu, Nov 11, 2010 at 1:00 PM, Sam Hendley shend...@greenenergycorp.comwrote: Thanks for the update and the especially the debian packages. I have 2 debian package related questions: 1) The keyserver wwwkeys.eu.pgp.net seems to go down for a few days at a time. That can make installing to

Re: what does recent mean for Recent*LatencyMicros?

On Thu, Nov 11, 2010 at 2:53 PM, Robert cassandra.robertw...@spamgourmet.com wrote: I'm looking at * RecentRangeLatencyMicros * RecentReadLatencyMicros * RecentWriteLatencyMicros on http://wiki.apache.org/cassandra/JmxInterface . However, it is not clear (short of looking at the

Re: Sorted Integer - UUID

On Wed, Dec 1, 2010 at 8:33 AM, Benjamin Waldher l...@laserbunny.netwrote: How can I have a sorted set of rows of Integer - UUID where the integer may exist many times? If you need to repeat an integer as a column name, add entropy and use a BytesType column. Pack your integer in big endian

Re: index file and KeysCached

2010/12/5 魏金仙 sei_...@126.com for each sstable, there is an index file, which is loaded in memory to locate a particular key's offset efficiently. Index files are not held in memory. and for each CF, KeysCached can be set to cache keys' location. could you pls tell me the difference

Re: probability of node receiving (not be responsible for) the request

2010/12/5 魏金仙 sei_...@126.com If a particular client send 5 requests to a 6-node cluster, then the probability of each node receiving(not be responsible for) the first request is 1/6. Assuming RF=1 and RandomPartitioner. Assume that node1 received the 1st request, will node1 receive the

Re: Re: probability of node receiving (not be responsible for) the request

2010/12/6 魏金仙 sei_...@126.com thank you. but I mean the probability of a node to receive the request not process it eventually . I see. That depends on how the client-side load balancing is written. -Brandon

Re: issue for cassandra-cli on 0.7-rc1

On Wed, Dec 8, 2010 at 12:09 PM, Ned Wolpert ned.wolp...@imemories.comwrote: Just a note that the README.txt file doesn't show using the ';' in the command. Fixed in RC2 (pending vote completion right now.) -Brandon

Re: Cassandra and disk space

On Thu, Dec 9, 2010 at 6:20 PM, Rustam Aliyev rus...@code.az wrote: Also, I noticed that you can specify multiple data file directories located on different disks. Let's say if I have machine with 4 x 500GB drives, what would be the difference between following 2 setups: 1. each drive

Re: cassandra database viewer

On Mon, Dec 13, 2010 at 1:28 PM, Aaron Morton aa...@thelastpickle.comwrote: The github page for Chiton says to use the current dev, but thats not correct. Cassandra 0.7 uses thrift 0.5 It was correct when I wrote the readme :) I also see the is a 0.7 branch for chiton are you using that?

Re: Dynamic Snitch / Read Path Questions

On Sun, Dec 12, 2010 at 10:49 AM, Daniel Doubleday daniel.double...@gmx.net wrote: Hi again. It would be great if someone could comment whether the following is true or not. I tried to understand the consequences of using |-Dcassandra.dynamic_snitch=true for the read path |and that's what

Re: Dynamic Snitch / Read Path Questions

On Mon, Dec 13, 2010 at 6:43 PM, Daniel Doubleday daniel.double...@gmx.netwrote: Oh - well but I see that the coordinator is actually using its own score for ordering. I was only concerned that dropped messages are ignored when calculating latencies but that seems to be the case for local or

Re: cassandra database viewer

On Tue, Dec 14, 2010 at 7:11 AM, Amin Sakka, Novapost amin.sa...@novapost.fr wrote: Thanks for your answers, I have checkout the 0.7 branch but still having troubles: *init_() takes at least 3 arguments (2 given)* Are you using the 0.7 branch of telephus too? -Brandon

Re: Exceptions in RowMutationVerbHandler

On Wed, Dec 15, 2010 at 3:48 PM, B. Todd Burruss bburr...@real.com wrote: i am seeing several different exceptions across my 8 node cluster. running 0.7 RC2. the following are all from one node. is this a known issue? https://issues.apache.org/jira/browse/CASSANDRA-1860 -Brandon

Re: unsubscribe

http://wiki.apache.org/cassandra/FAQ#unsubscribe

Re: Should nodetool ring give equal load ?

On Wed, Jan 12, 2011 at 4:08 PM, mck m...@apache.org wrote: You're using an ordered partitioner and your nodes are evenly spread around the ring, but your data probably isn't evenly distributed. This load number seems equals to `du -hs data_file_directories` and since i've got N == RF

Re: about the write consistency

2011/1/12 raoyixuan (Shandy) raoyix...@huawei.com if I have 20 nodes, and replica factor is 3, whether all the node have the replica finally or just have 3 replica? 3. -Brandon

Re: best way to do a count

On Sun, Jan 16, 2011 at 3:36 PM, Aaron Morton aa...@thelastpickle.comwrote: Not that I know of. In 0.7 you have to pass a predicate to get_count (and use a small hack to get the old behavior: https://github.com/driftx/Telephus/blob/0.7/telephus/client.py#L109 ) -Brandon

Re: is it possible to map an one from a a file and an one from cassandra?

2011/1/16 Jun Young Kim juneng...@gmail.com Hi aron. I think that if the pig is able to support to map it, the same job could be represented in java code itself. I believe that we can call a map function by loading a file and cassandra at the same time. Ps) I dont need to join from them.

Re: Super CF or two CFs?

On Mon, Jan 17, 2011 at 5:12 PM, Steven Mac ugs...@hotmail.com wrote: I guess I was maybe trying to simplify the question too much. In reality I do not have one volatile part, but multiple ones (say all trading data of day). Each would be a supercolumn identified by the time slot, with the

Re: What is be the best possible client option available to a PHP developer for implementing an application ready for production environments ?

On Mon, Jan 17, 2011 at 7:22 PM, Ertio Lew ertio...@gmail.com wrote: What would be the best client option to go with in order to use Pycassa. https://github.com/thobbs/pycassa Cassandra through an application to be implemented in PHP. Oh. Then https://github.com/thobbs/phpcassa

Re: How does Bootstrapping work in 0.7 ??

On Thu, Jan 20, 2011 at 2:14 PM, Robert Coli rc...@digg.com wrote: On Thu, Jan 20, 2011 at 11:55 AM, Eric Gilmore e...@riptano.com wrote: Also, in the Getting Started page, we note that it may be best to set initial_token to 0 on the very first node that you start. Could you expand a bit

Re: Repair on single CF not working (0.7)

On Mon, Jan 24, 2011 at 4:15 PM, Dan Hendry dan.hendry.j...@gmail.comwrote: I am trying to repair a single CF using nodetool. It seems like the request to limit the repair to one CF is not being respected. Here is my current situation: - Run “nodetool repair *KEYSPACE* CF_A” on

Re: Stress test inconsistencies

On Tue, Jan 25, 2011 at 1:23 PM, Oleg Proudnikov ol...@cloudorange.comwrote: When I run contrib/stress with a higher thread count, the server does scale to 200 inserts a second with latency of 200ms. At the same time Windows desktop scales to 900 inserts a second and latency of 120ms. There

Re: repair cause large number of SSTABLEs

On Thu, Jan 27, 2011 at 10:21 AM, Todd Burruss bburr...@real.com wrote: thx, but i didn't do anything like removing/adding nodes. just did a nodetool repair after running for an hour or so on a clean install It affects anything that involves streaming. -Brandon

Re: Question on max_hint_window_in_ms

On Mon, Jan 31, 2011 at 1:07 PM, Narendra Sharma narendra.sha...@gmail.comwrote: As per config: # this defines the maximum amount of time a dead host will have hints # generated. After it has been dead this long, hints will be dropped. max_hint_window_in_ms: 360 # one hour Will this

Re: Compact Array OOB

On Mon, Jan 31, 2011 at 2:21 PM, Damick, Jeffrey jeffrey.dam...@neustar.biz wrote: And another node (running compact): INFO [StreamStage:1] 2011-01-31 20:03:48,663 StreamOutSession.java (line 174) Streaming to /xxx.xxx.xxx.xxx ERROR [CompactionExecutor:1] 2011-01-31 20:03:52,587

Re: py_stress error in Cassandra 0.7

As the README suggests, you need to run ant gen-thrift-py first. On Wed, Feb 2, 2011 at 2:53 PM, shan...@accenture.com wrote: Hi, I am trying to get the py_stress to work in Cassandra 0.7. I keep getting this error: ubuntu@ip-10-114-85-218:~/apache-cassandra-0.7.0/contrib/py_stress$

Re: Problems with Python Stress Test

On Thu, Feb 3, 2011 at 7:02 PM, Sameer Farooqui cassandral...@gmail.comwrote: Hi guys, I was playing around with the stress.py test this week and noticed a few things. 1) Progress-interval does not always work correctly. I set it to 5 in the example below, but am instead getting varying

Re: cassandra-cli does not work

Add a semicolon. On Feb 19, 2011 7:11 PM, 橋本誠 tokomakoma...@auone.jp wrote: Hello I am trying to run cassandra v0.7.2 on ubuntu 10.04. Cassandra works but in cassandra-cli any command such as help does not respond. $ ./cassandra -f INFO 10:08:43,618 Logging initialized INFO 10:08:43,634 Heap

Re: How does node failure detection work in Cassandra?

On Fri, Feb 25, 2011 at 5:32 PM, tijoriwala.ritesh tijoriwala.rit...@gmail.com wrote: Hi, I would like to know internals of how does node failure detection work in Cassandra? http://bit.ly/phi_accrual Is there a concept of Coordinator/Election? No. -Brandon

Re: Increase flush writer queue

On Mon, Mar 14, 2011 at 1:03 PM, Daniel Doubleday daniel.double...@gmx.netwrote: I was thinking of setting the work queue in CFS.flushWriterPool to new LinkedBlockingQueueRunnable(3) // because 3 is my favorite number instead of new

Re: [RELEASE] 0.7.4

On Tue, Mar 15, 2011 at 4:26 PM, Mark static.void@gmail.com wrote: Still not seeing 0.7.4 as a download option on the main site? Artifacts are probably still syncing, try http://www.apache.org/dyn/closer.cgi?path=/cassandra/0.7.4/apache-cassandra-0.7.4-bin.tar.gz until one of them works.

Re: Ghost node showing up in the ring

On Wed, Mar 23, 2011 at 2:23 PM, Alexis Lê-Quôc a...@datadoghq.com wrote: I'm going to take a stab at a hypothesis: Sunday: I drain and decommission 2.3.4.193 *but* I forget to run node cleanup on the rest of the nodes. The ring looks clean but I did not see Annoucing that ... in the logs.

Re: SSTable Corruption

On Wed, Mar 23, 2011 at 4:59 PM, Erik Onnen eon...@gmail.com wrote: After an upgrade from 0.7.3 to 0.7.4, we're seeing the following on several data files: ERROR [main] 2011-03-23 18:58:33,137 ColumnFamilyStore.java (line 235) Corrupt sstable

Re: SSTable Corruption

On Wed, Mar 23, 2011 at 6:52 PM, Erik Onnen eon...@gmail.com wrote: Thanks, so is it the [Index.db, Statistics.db, Data.db, Filter.db]; skipped that indicates it's in Statistics? Basically I need a way to know if the same is true of all the other tables showing this issue. It's the at

Re: unsubscribe

On Thu, Mar 24, 2011 at 9:11 AM, Mohamed Ibrahim mibra...@clker.com wrote: unsubscribe http://bit.ly/ho9zoY http://wiki.apache.org/cassandra/FAQ#unsubscribe

Re: Cassandra apt repository gives 403 forbidden

https://issues.apache.org/jira/browse/CASSANDRA-2370 On Thu, Mar 24, 2011 at 11:53 AM, Luke Biddell luke.bidd...@gmail.comwrote: I'm having trouble accessing the apt repository. I get: W: Failed to fetch

Re: URGENT HELP PLEASE!

On Thu, Mar 24, 2011 at 11:58 PM, Jared Laprise ja...@webonyx.com wrote: My replication factor is 1 Then you are living dangerously. I haven't run repair until today, I'm using ONE for consistency level. Repair at rf=1 won't do anything. I have two servers that are load balanced (per

Re: pig counting question

On Fri, Mar 25, 2011 at 1:41 PM, Jeffrey Wang jw...@palantir.com wrote: I don't think it's Pig running out of memory, but rather Cassandra itself (the data doesn't even make it to Pig). get_range_slices() is called with a row batch size of 4096, the default, and it's fetching all of the

Re: Model to store biggest score

On Wed, Mar 17, 2010 at 10:38 AM, Richard Grossman richie...@gmail.comwrote: Hi, I trying to find a model where I can keep the list of biggest score for users. it's seems simple but I'm stuck here . For example user1 score = 10 user2 score = 20

Re: get_range_slice(s) question

On Wed, Mar 24, 2010 at 3:24 PM, Jack Culpepper jackculpep...@gmail.comwrote: Did a ticket get opened for this? I am able to duplicate it. Yes, and fixed for 0.6: http://issues.apache.org/jira/browse/CASSANDRA-884 -Brandon

Re: Newbie Performance Question

On Fri, Mar 26, 2010 at 10:45 AM, malcolm smith malsm...@treehousesystems.com wrote: I've been getting a feel for the performance elements of Cassandra using version 0.51. I've done similar tests on HBase before, but Cassandra has some very appealing aspects that I would like to pursue.

Re: Newbie Performance Question

On Fri, Mar 26, 2010 at 3:08 PM, Scott White scottbl...@gmail.com wrote: Yep I believe those are inserts per second. Take the last line: 811653,1666,250 I believe that's telling you that during that 10 second interval you did 1666 inserts but your overall insert rate is 811653/250 =

Re: Proxy instances?

On Thu, Apr 1, 2010 at 7:19 PM, David King dk...@ketralnis.com wrote: Is it possible to have Cassandra instances that serve only as proxies to the rest of the cluster, but have no storage themselves? Maybe with a keyspace length of 0? contrib/client_only is what you're looking for. -Brandon

Re: Read Performance

On Thu, Apr 1, 2010 at 9:37 PM, James Golick jamesgol...@gmail.com wrote: Well, folks, I'm feeling a little stupid right now (adding to the injury inflicted by one Mr. Stump :-P). So, here's the story. The cache hit rate is up around 97% now. The ruby code is down to around 20-25ms to

Re: multinode cluster wiki page

2010/4/5 Ted Zlatanov t...@lifelogs.com On Sat, 3 Apr 2010 14:10:37 -0500 Jonathan Ellis jbel...@gmail.com wrote: JE IMO the right way to do it is to configure your machines so that JE autodetecting listenaddress Just Works, so you can deploy exactly the JE same config to all nodes. It

Re: cms content and numerous sort operations

On Fri, Apr 2, 2010 at 10:06 AM, S Ahmed sahmed1...@gmail.com wrote: Greetings! Content management systems usually have complex sort operations, how would this be best handled with Cassandra? Is the only way to handle this type of situation to build indexes for each and every sort?

Re: Handshake failed

On Wed, Apr 7, 2010 at 3:15 PM, Jason Alexander jason.alexan...@match.comwrote: TTransport transport = new TSocket(10.223.131.19, ); This is not the default Thrift port (unless you explicitly set that way), you probably want port 9160. -Brandon

Re: Is this sentence slightly inaccurate

On Thu, Apr 8, 2010 at 1:26 PM, Peter Chang pete...@gmail.com wrote: Sorry, I've read through the docs (although not too recently) and have followed this mailing list for a bit. But I haven't seen how it's possible to iterate with RP? Could you kindly point out to me where it shows how to do

Re: Is this sentence slightly inaccurate

On Thu, Apr 8, 2010 at 2:38 PM, Peter Chang pete...@gmail.com wrote: I thought OPP was required for get_range_slices. Is this no longer the case for 0.6? Right, get_range_slices works with either partitioner. -Brandon

Re: json2sstable

On Thu, Apr 15, 2010 at 3:47 PM, Lee Parker l...@socialagency.com wrote: Has anyone used json2sstable to migrate a large amount of data into cassandra? What was your methodology? I assume that this will be much faster than stepping through my data and doing writes via PHP/Thrift. If you're

Re: cassandra instability

On Fri, Apr 16, 2010 at 12:50 PM, Lee Parker l...@socialagency.com wrote: This process is running on two clients each working on a separate part of the mysql data which totals to about 70G. Each time I start it up, it will work fine for about 1 hour and then it will crash the servers. The

Re: Can't start cassandra

On Sun, Apr 18, 2010 at 4:30 PM, Soichi Hayashi hayas...@indiana.eduwrote: INFO 21:27:29,482 Replaying /home/hayashis/app/apache-cassandra-0.6.0/log/log.txt java.lang.OutOfMemoryError: Java heap space I'm not sure what log.txt might be, but based on the filename it is not a Cassandra

Re: 0.6.1 insert 1B rows, crashed when using py_stress

On Mon, Apr 19, 2010 at 9:06 PM, Schubert Zhang zson...@gmail.com wrote: 2. Reject the request when be short of resource, instead of throws OOME and exit (crash). Right, that is the crux of the problem It will be addressed here: https://issues.apache.org/jira/browse/CASSANDRA-685 -Brandon

Re: why read operation use so much of memory?

On Mon, Apr 19, 2010 at 10:28 PM, dir dir sikerasa...@gmail.com wrote: Hi Jonathan, I see this page (http://wiki.apache.org/cassandra/SSTableMemtable) does not exist yet. I think he meant: http://wiki.apache.org/cassandra/MemtableSSTable -Brandon

Re: 0.6.1 insert 1B rows, crashed when using py_stress

On Fri, Apr 23, 2010 at 4:59 AM, richard yao richard.yao2...@gmail.comwrote: I got the same question, and after that cassandra cann't be started. I want to know how to restart the cassandra after it crashed. Thanks for any reply. Perhaps supply the error when you restart it? -Brandon

Re: Cassandra - Thread leak when high concurrent load

On Sun, Apr 25, 2010 at 12:09 PM, JKnight JKnight beukni...@gmail.comwrote: Thanks Robson, The number of thread gradually increase to 7000. And the server hang up. I know threadpool is used to prevent creating large number of thread. So why Cassandra create large number of thread when high

Re: Problem with JVM? concurrent mode failure

On Tue, Apr 27, 2010 at 7:05 PM, Jonathan Ellis jbel...@gmail.com wrote: We're working on this in https://issues.apache.org/jira/browse/CASSANDRA-1014 There's an easy workaround noted in the ticket if you're willing to sacrifice a bit of performance: use batch mode instead of periodic for

Re: How do I change the Cluster Name in the CLI?

On Wed, Apr 28, 2010 at 3:17 AM, David Boxenhorn da...@lookin2.com wrote: When I change the cluster name in storage-conf.xml, the CLI complains that the cluster name doesn't equal Test Cluster. How do I change the cluster name that the CLI looks for? I don't think you mean the CLI, but the

Re: Basic Architecture Question

On Thu, Apr 29, 2010 at 10:19 AM, David Boxenhorn da...@lookin2.com wrote: So now we can do any kind of range queries, not just for getting all keys as Jesse said? With RP, the key ranges are based on the MD5 sum of the key, so it's really only useful for getting all keys, or obtaining a

Re: Updating (as opposed to just setting) Cassandra data via Hadoop

+1 for pig -Brandon On May 6, 2010 6:49 PM, Stu Hood stu.h...@rackspace.com wrote: Agreed. For the massaging, may I recommend using Pig? It is fantastic for unioning and reformatting datasets like these. -Original Message- From: Mark Schnitzius mark.schnitz...@cxense.com Sent:

Re: chiton

On Sun, May 16, 2010 at 1:29 PM, Sonny Heer sonnyh...@gmail.com wrote: it doesn't like the the int(port) call. somehow the port # isn't getting through? I hardcoded the port to 9160, and it works. Look like you hit this bug which is now solved:

Re: Problems running Cassandra 0.6.1 on large EC2 instances.

On Mon, May 17, 2010 at 6:02 PM, Curt Bererton c...@zipzapplay.com wrote: So pretty much the defaults aside from the 7Gig max heap. CPU is totally hammered right now, and it is receiving 0 ops/sec from me since I disconnected it from our application right now until I can figure out what's

Re: key path vs super column

On Wed, May 19, 2010 at 7:15 PM, Torsten Curdt tcu...@vafer.org wrote: We are currently working on a prototype that is using Cassandra for realtime-ish statistics system. This seems to be quite a common use case. If people are interested - maybe it be worth collaborating on this beyond design

Re: delete mutation

On Fri, May 21, 2010 at 8:55 AM, Mark Greene green...@gmail.com wrote: Is there a particular reason why timestamp is required to do a deletion? Because a delete is just a write with a tombstone flag, and the write with the highest timestamp wins. If i'm reading the api docs correctly, this

Re: Cassandra won't start after node crash

On Fri, Jun 11, 2010 at 1:23 PM, Jonathan Ellis jbel...@gmail.com wrote: Hmm. That seems to be saying that sstable2json is using the index file, and erroring out there the same way the Cassandra server does. So it doesn't necessarily mean the data files are corrupt. I believe you can

Re: Can 0.6.2 and 0.6.1 servers coexist in a cluster?

On Fri, Jun 25, 2010 at 4:27 PM, Claire Chang cla...@merchantcircle.comwrote: Do I have to leave the hinted hand off ON for all servers? No, if your goal is to end up disabling HH, then you can leave it off on the 0.6.2 servers, and when you upgrade the 0.6.1 servers disable it there, then run

Re: Cassandra benchmarking on Rackspace Cloud

On Sat, Jul 17, 2010 at 12:02 PM, Schubert Zhang zson...@gmail.com wrote: Hi Jonathan, The 7k reads/s is very high, could you please make more explain about your benchmark? 7000 reads/s makes average latency of each read operation only talks 0.143ms. Consider 2 disks in the benchmark, it

Re: Cassandra benchmarking on Rackspace Cloud

On Sun, Jul 18, 2010 at 8:45 PM, Oren Benjamin o...@clearspring.com wrote: Thanks for the info. Very helpful in validating what I've been seeing. As for the scaling limit... The above was single node testing. I'd expect to be able to add nodes and scale throughput. Unfortunately, I seem

Re: Please need help with Munin: Cassandra Munin plugin problem

On Fri, Jul 30, 2010 at 9:58 AM, osishkin osishkin osish...@gmail.comwrote: I'm talking about the James Golick plugin. I followed the instructions, and got nowhere. http://github.com/jamesgolick/cassandra-munin-plugins I saw in the mailing list that other people successfully got it to work

Re: Corrupt file after restarting in 0.7

On Wed, Aug 11, 2010 at 7:09 PM, Mark static.void@gmail.com wrote: When I kill cassandra and restart I keep seeing the following error message. Is this something I should be concerned about? No, there's just a race condition as evidenced by these lines: INFO 17:05:08,933 Deleted

Re: Memtable adjusting impact expectations?

On Tue, Sep 14, 2010 at 10:52 PM, Dathan Pattishall datha...@gmail.comwrote: Yea this was a bit of a read, so I think what I need really is this http://www.slideshare.net/driftx/cassandra-summit-2010-performance-tuning http://riptano.blip.tv/file/4011985/ is even better. :) -Brandon

Re: Pb with memtable_throughput_in_mb?

On Thu, Sep 16, 2010 at 11:00 AM, Thomas Boucher ethx...@gmail.com wrote: Hi, I am trying out the latest trunk version and I get an error when starting Cassandra with -Xmx3G: Fatal error: memtable_operations_in_millions must be a positive double I guess it is caused by line 76 in

Re: Bootstrapping stays stuck

On Thu, Sep 16, 2010 at 4:59 PM, Gurpreet Singh gurpreet.si...@gmail.comwrote: Thanks to driftx from cassandra IRC channel for helping out. That's me. :) This was resolved by increasing the rpc timeout for the bootstrap process. I suspect that this is a bug, because changing the

Re: Cassandra operation success ratio survey results

On Tue, Sep 21, 2010 at 8:29 AM, Juho Mäkinen juho.maki...@gmail.comwrote: It's known that compaction hurts the node performance so that it might miss some requests. That's why it's important to handle these situations and the client needs to retry the operation into another working host. We

Re: MessagingServiceMBean does not support o.a.c.concurrent task counts

On Wed, Sep 29, 2010 at 4:37 PM, Aaron Morton aa...@thelastpickle.comwrote: Running the current 0.7.0-beta2 #3 build, I get the error below when checking tpstats via node_tool. The MessagingService is registering itself as a mbean in org.apache.cassandra.concurrent, and the

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: 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: 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

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

[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 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

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 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

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: [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

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