Re: Tests failing for ppc64le architecture.

unsubscribe On Wed, Jan 31, 2024 at 2:23 AM Sunidhi Gaonkar via user < user@cassandra.apache.org> wrote: > Hi Bowen, > > My bad, Thank you for pointing this out, I will try the Cassandra dev > mailing list. > > Regards, > > Sunidhi Gaonkar. > -- > *From:* Bowen Song vi

Re: Schema inconsistency in mixed-version cluster

If an upgrade involves changing the schema, I think backwards compatibility would be out of the question? On Tue, Dec 12, 2023 at 10:36 AM Jeff Jirsa wrote: > This deserves a JIRA > > > > On Tue, Dec 12, 2023 at 8:30 AM Sebastian Marsching < > sebast...@marsching.com> wrote: > >> Hi, >> >> while

Re: Corrupt sstables_activity

t environment before applying in production. > > Regards > Manish > > Regards > Manish > > On Tue, Jul 7, 2020 at 2:36 AM F wrote: > >> Allow me to simplify the question: >> >> Are there any tables under the system keyspace, if deleted, will rebuild >>

Re: Corrupt sstables_activity

looking at under system keyspace: sstable_activity Apache Cassandra 3.9 On Thu, Jul 2, 2020, 12:49 PM F wrote: > R, > > Thank you for the reply. I was actually using this article to repair a > normal table (a table not in the system keyspace). > > However, my issue is related

Re: Corrupt sstables_activity

wrote: > Here’s an article link for repairing table corruption, something I’d saved > back last year in case I ever needed it: > > > > https://blog.pythian.com/so-you-have-a-broken-cassandra-sstable-file/ > > > > Hope it helps. > > > > R > > > > *F

Corrupt sstables_activity

Good afternoon! I have a question related to a system level keyspace. Problem: While running a routine full repair on a specific keyspace and table where i had to remove one of the big data portions for corruption (sstablescrub failed), the system.log indicated that the specific keyspace and table

FINAL REMINDER: CFP for Apache EU Roadshow Closes 25th February

Hello Apache Supporters and Enthusiasts This is your FINAL reminder that the Call for Papers (CFP) for the Apache EU Roadshow is closing soon. Our Apache EU Roadshow will focus on Cloud, IoT, Apache Tomcat, Apache Http and will run from 13-14 June 2018 in Berlin. Note that the CFP deadline has

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Thanks & Regards Amit Singh

Migrating to LCS : Disk Size recommendation clashes

Hi All, We are in process of migrating from STCS to LCS and was just doing few reads on line . Below is the excerpt from Datastax recommendation on data size : Doc link : https://docs.datastax.com/en/landing_page/doc/landing_page/planning/planningHardware.html [cid:image004.png@01D2B47E.E29E7

RE: Incremental Repair Migration

Your best bet is to just run repair constantly. We maintain an updated fork of Spotify's reaper tool to help manage it: https://github.com/thelastpickle/cassandra-reaper On Mon, Jan 9, 2017 at 10:04 PM Amit Singh F mailto:amit.f.si...@ericsson.com>> wrote: Hi All, We are thinking o

Incremental Repair Migration

Hi All, We are thinking of migrating from primary range repair (-pr) to incremental repair. Environment : * Cassandra 2.1.16 * 25 Node cluster , * RF 3 * Data size up to 450 GB per nodes We found that running full repair will be taking around 8 hrs per node which means 20

RE: Incremental repair for the first time

Hi , Generally Upgradesstables are only recommended when you plan to move with Major version like from 2.0 to 2.1 or from 2.1 to 2.2 etc. Since you are doing minor version upgrade no need to run upgradesstables utility. Link by Datastax might be helpful to you : https://support.datastax.com/

RE: Trying to find cause of exception

0.jar:3.3.0] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111] Caused by: java.lang.NullPointerException: null RICHARD NEY TECHNICAL DIRECTOR, RESEARCH & DEVELOPMENT +1 (978) 848.6640 WORK +1 (916) 846.2353 MOBILE UNITED STATES richard@aspect.com<mailto:richard@aspect.com> asp

RE: Trying to find cause of exception

Hello, Few pointers : a.) Can you check in system.log for similar msgs like “marking as down” on the node which gives err msg if yes, then please check for GC pause . Heavy load is one of the reason for this. b.)Can you try connecting cqlsh to that node once you get this kind of msg

RE: Handling Leap second delay

Hi , Attached conversation can be of some help to you. Regards Amit Singh From: Sanjeev T [mailto:san...@gmail.com] Sent: Wednesday, December 21, 2016 9:24 AM To: user@cassandra.apache.org Subject: Handling Leap second delay Hi, Can some of you share points on, the versions and handling leap s

Tomstones impact on repairs both anti-entropy and read repair

Hi Folks, I have a table that has lot of tombstones generated and has caused inconsistent data across various datacenters. we run anti-entropy repairs and also have read_repair_chance tuned-up during our non busy hours. But yet when we try to compare data residing in various replicas across DCs,

JConsole Support for SSL in C* 2.0

Hi All, I was looking through the documentation of Security in C* 2.0, I noticed that there is no such mention of Jconsole over SSL whereas in latest 3.x doc, I can spot that : http://docs.datastax.com/en/cassandra_win/3.0/cassandra/configuration/secureJconsoleSSL.html so what I can infer from

RE: C* files getting stuck

Hi All, Please check if anybody has faced below issue and if yes what best can be done to avoid this.? Thanks in advance. Regards Amit Singh From: Amit Singh F [mailto:amit.f.si...@ericsson.com] Sent: Wednesday, June 29, 2016 3:52 PM To: user@cassandra.apache.org<mailto:u

upgradesstables throws error when migrating from 2.0.14 to 2.1.13

Hi All, We are in process of migrating from 2.0.14 to 2.1.13 and we are able to successfully install binaries and make Cassandra 2.1.13 running up and fine. But issue comes up when we try to run nodetool upgradesstables , it gets finished in few seconds only which means it does not find any old

RE: Exclude a host from the repair process

Hi Jean, This option is available in C* version 2.1.x & above, where you can specify hosts in nodetool repair command . For more detail please visit the link below : https://docs.datastax.com/en/cassandra/2.1/cassandra/tools/toolsRepair.html Regards Amit Singh From: Alain RODRIGUEZ [mailto:a

RE: C* files getting stuck

instance has been our fix so far. I am very interested if anyone else has a solution. I was unable to get a definitive answer from Datastax during the last Cassandra Summit. From: Amit Singh F [mailto:amit.f.si...@ericsson.com] Sent: Thursday, June 30, 2016 7:02 AM To: user@cassandra.apache.org

RE: C* files getting stuck

Hi All, Please check fi anybody has faced below issue and if yes what best can be done to avoid this.? Thanks in advance. Regards Amit Singh From: Amit Singh F [mailto:amit.f.si...@ericsson.com] Sent: Wednesday, June 29, 2016 3:52 PM To: user@cassandra.apache.org Subject: C* files getting

C* files getting stuck

Hi All We are running Cassandra 2.0.14 and disk usage is very high. On investigating it further we found that there are around 4-5 files(~ 150 GB) in stuck mode. Command Fired : lsof /var/lib/cassandra | grep -i deleted Output : java 12158 cassandra 308r REG 8,16 34396638044 12727268 /var/lib

RE: *** How to bring up one of the Nodes which is down ***

Hi Lokesh, Please check your Cassandra logs for the downed too and see any exception traces are there or not. From: Carlos Alonso [mailto:i...@mrcalonso.com] Sent: Tuesday, April 12, 2016 3:59 PM To: user@cassandra.apache.org Subject: Re: *** How to bring up one of the Nodes which is down *** H

Re: How is the coordinator node in LOCAL_QUORUM chosen?

f they're all in the same DC) for each subsequent execution. On Fri, Mar 25, 2016 at 2:04 PM X. F. Li <mailto:lixf...@gmail.com>> wrote: Hello, Local quorum works in the same data center as the coordinator node, but when an app server execute the write query, how is

How is the coordinator node in LOCAL_QUORUM chosen?

h ALL consistency fail if the queried partition is on the failed node? Or would they continue to work with 2 replicas during the time while cassandra is replicating the partitions on the failed node to re-establish 3 replicas? Thank you. Regards, X. F. Li

Re: ntpd clock sync

has drifted significantly into the future, when you start NTP you may be writing data with timestamps lower than timestamps on data that already exists. In this case, the existing data (with timestamps in the future) may take precedence over new writes (with correct timestamps). From: K F

ntpd clock sync

Hi, I have question about ntpd. In certain clusters where new datacenters were added since 1 week we stood-up those machines didn't have ntpd running on them. Will it cause any problem if we enable or start ntpd now on those newly added datacenters.  Thanks.

If a cluster column has the same value over many rows, is the value duplicated in memory?

are loaded into memory cache, is the value of c2 duplicated N times in memory? Or cassandra treat (c1,c2,c3) like a multi-level map and only have 1 copy for the value? Thanks. X. F. Li

RE: Lot of GC on two nodes out of 7

Hi Anishek, We too faced similar problem in 2.0.14 and after doing some research we config few parameters in Cassandra.yaml and was able to overcome GC pauses . Those are : · memtable_flush_writers : increased from 1 to 3 as from tpstats output we can see mutations dropped so it mean

RE: Lot of GC on two nodes out of 7

Hi Anishek, We too faced similar problem in 2.0.14 and after doing some research we config few parameters in Cassandra.yaml and was able to overcome GC pauses . Those are : · memtable_flush_writers : increased from 1 to 3 as from tpstats output we can see mutations dropped so it mean

RE: Querying on index

Hi Rakesh, Default consistency level of client is set to 1, from your query it seems you are using CQL so could you try same query by setting CONSISTENCY ALL when you enter cqlsh. Regards Amit Singh From: Rakesh Kumar [mailto:dcrunch...@aim.com] Sent: Wednesday, March 02, 2016 3:25 AM To: u

RE: Gossip Protocol

Hello, To get detailed description/Architecture of Gossip protocol please check the below link : https://wiki.apache.org/cassandra/ArchitectureGossip Also you can try nodetool gossipinfo command , output of this will guide you on details saved by gossip. Regards Amit Singh From: Thouraya TH

Upgrade from 2.0.x to 2.2.x documentation missing

Hi, We are currently at Cassandra 2.0.14 in production and since it going to be EOL soon so we are planning to upgrade it to Cassandra 2.2.4 (http://cassandra.apache.org/download/) which is the currently production ready version. While doing some analysis we found that there is no such entry of

Want to run repair on a node without it taking traffic

Hi Folks, How can I run repair on a node without it taking any coordinator/client traffic. So, I can complete the repair on the node without it taking any traffic, except the streams from other nodes. Is that possible? Thanks.

Unable to bootstrap another DC in my cluster

Hi folks, As I am trying to bring up a new DC in my cluster, my first seed node that I bring-up in the new DC that I am adding to the existing cluster. It's not able to receive reply back for the GossipDigestSyn request sent to other seeds in the cluster. This is causing the first node to come-u

Re: Does nodetool cleanup clears tombstones in the CF?

Thanks Rob, I will look into checksstablegarbage utility. However, I don't want to run major compaction as that would result in too big of a sstable. Regards,K F From: Robert Coli To: "user@cassandra.apache.org" ; K F Sent: Thursday, November 5, 2015 1:53 PM Su

Does nodetool cleanup clears tombstones in the CF?

Hi, Quick question, in order for me to purge tombstones on particular nodes if I run nodetool cleanup will that help in purging the tombstones from that node? Thanks.

Work-around needed for issue seen as mentioned in CASSANDRA-8072

Hi folks, We are hitting similar issue described in  https://issues.apache.org/jira/browse/CASSANDRA-8072When we try to bootstrap a node it doesn't bootstrap due to issues encountered in JIRA ticket above. We are using version of cassandra 2.0.14. Is there a work-around for the situation? Please n

Re: G1 GC settings

Excellent, thanks Jonathan. From: Jon Haddad To: user@cassandra.apache.org; K F Sent: Tuesday, October 13, 2015 5:09 PM Subject: Re: G1 GC settings You may want to read Al Tobey’s Cassandra tuning guide.  It’s got a section on G1.  It’s being widely used, successfully, at massive

Re: G1 GC settings

Adding to the below thread planning to use stable 2.1.x release of cassandra From: K F To: User Sent: Tuesday, October 13, 2015 5:03 PM Subject: G1 GC settings Hi, has anyone started to use G1 collector. If so, how is the experience. Can you share your insights into some of the

G1 GC settings

Hi, has anyone started to use G1 collector. If so, how is the experience. Can you share your insights into some of the important tune up you had to do for cassandra. We are planning to use G1 collector with the latest version of jre 1.8.x Thanks.

addition of nodes with auth enabled on a datacenter causes existing nodes to loose their permissions

Hi, I have 3 DCs out of which in one of the DC, I added 20 nodes. All of the DCs had auth enabled, it was functioning fine. But after addition of 20 nodes in one of the DC, the permissions just got messed-up on the existing nodes. My application started getting errors while querying using the us

Question about addition of node in a DC while a node is down in another DC

Hi Cassandra users, I had a question where I have my cassandra cluster running in vnodes. And we would like to add some nodes in DC1 while there is a node down in DC2. So, my question to you all is it ok to add nodes to DC1 while there is a node down in DC2? Thanks for the response.

Seeing null pointer exception 2.0.14 after purging gossip state

Hi, I have cassandra 2.0.14 deployed and after following the method described in  Apache Cassandra™ 2.0 to clear the gossip state of the node in one of the dc of my cluster |   | |   |   |   |   |   | | Apache Cassandra™ 2.0Correcting a problem in the gossip state. | Version 2.0 | | | | View on d

sstableloader in version 2.0.14 doesn't honor thrift_framed_transport_size_in_mb set on server side

While using sstableloader in 2.0.14 we have discovered that setting the  thrift_framed_transport_size_in_mb to 16 in cassandra.yaml doesn't honor it. Did anybody see similar issue? So, this is the exception seen, org.apache.thrift.transport.TTransportException: Frame size (16165888) larger than m

Should maintenance repairs be run on system related keyspaces?

Hi, I have a question in general with regards to repairs on system related keyspaces. Is it necessary in maintenance repair kicked of via cron should also repair system related keyspaces? Regards,Ken

Seeing wierd exceptions

Hi, In 2 of our clusters running 2.0.14 version we are seeing following exception, 15-08-05 16:11:32,723 [FlushWriter:268358] ERRORCassandraDaemon Exception in thread Thread[FlushWriter:268358,5,main]FSReadError in/opt/cassandra/data/ks1/cf1/ks1-cf1-jb-231142-Index.db     atorg.apache.cassa

Re: Question about consistency in cassandra 2.0.9

cassandra. Regards,Ken From: graham sanderson To: user@cassandra.apache.org; K F Sent: Thursday, June 11, 2015 8:14 PM Subject: Re: Question about consistency in cassandra 2.0.9 It looks (I’m guessing with entirely not enough info) that you only have two nodes in DC4, and are probably

Question about consistency in cassandra 2.0.9

Hi, I am running a cassandra cluster with 4 dcs. Out of 4 dcs, I have 3 DCs returning right data but 1 dc where I had 1 node down, the data didn't return correct records. So, e.g. DC1 - 386 records (single-token based DC)DC2 - 386 records (vnode based DC)DC3 - 386 records (vnode based DC)DC4 - 1

unit test failing when pull is taken

Hi All, I have taken pull from Cassandra branch and when I try to run test cases , they start failing(around 13 test suites are failing). Below are some traces of some test suite which are failing : * [junit] Testsuite: org.apache.cassandra.db.compaction.BlacklistingCompactionsTest

how to find cassandra version using pycassa

I see only api version and schema version API available. Any idea Feng

Re: Two Random Ports in Private port range

Yes, they are. What are they used for and are they specifically documented somewhere? Thanks! On Fri, Apr 20, 2012 at 11:25 AM, Kirk True wrote: > Are these the dynamic JMX ports? > > Sent from my iPad > > On Apr 19, 2012, at 8:58 AM, W F wrote: > > Hi All, > >

Two Random Ports in Private port range

Hi All, I did a web search of the archives (hope I looked in the right place) and could not find a request like this. When Cassandra is running, it seems to create to random tcp listen ports. For example: "50378 and 58692", "49952, 52792". What are are these for and is there documentation regar

Re: unsubscribe

Can't the mailinglist server be changed to treat messages with unsubscribe as subject as an unsubscribe as well? Otherwise it will just keep happening, as people simply don't remember or take time to find out? Just my 2 cents... Groets, Hugo. On 2 feb 2011, at 16:54, Jonathan Ellis wrote

Re: Question on Eventual Consistency

It's the previous value. I've checked. Groets, Hugo. On 20 jul 2010, at 00:19, Aaron Morton wrote: When the test fails what value does the verify array have ? Is it null or a previous value? Aaron On 20 Jul, 2010,at 08:22 AM, Hugo wrote: See my test case attached below. In my setup it u

Cassandra questions

Hi, Being fairly new to Cassandra I have a couple of questions: 1) Is there a way to remove multiple keys/rows in one operation (batch) or must keys be removed one by one? 2) I see API references to version 0.7, but I couldn't find a alpha or beta anywhere? Does it exist already and if so, wher