TLS version error when using cqlsh with SSL

2017-11-08 Thread Fredrik Nordström X
* Running Cassandra outside of Intellij (starting the /bin/cassandra script) Any help is really appreciated. Thanks! BR, Fredrik

high WMI CPU usage on Windows

2017-04-18 Thread Fredrik Skeel Løkke
Hi Does anyone know what Cassandra uses WMI for when running on Windows? We have some issues with high WMI CPU usage.. Yours sincerely / Med venlig hilsen Fredrik Løkke (FRSKL) Backend Architect, Application Development Plant Application (PA) Technology & Service Solutions (TSS) Ve

Corrupt SSTables

2016-03-02 Thread Fredrik Al
Hi all. Having two FSReadErrors: FSReadError in ..\..\data\system\compaction_history-b4dbb7b4dc493fb5b3bfce6e434832ca\system-compaction_history-ka-329-CompressionInfo.db FSReadError in

Re: Upgrade from 2.0.9 to 2.1.3

2015-03-07 Thread Fredrik Larsson Stigbäck
Thanks for the advice. /Fredrik 7 mar 2015 kl. 02:25 skrev graham sanderson gra...@vast.com: Note for anyone who accidentally or otherwise ends up with 2.1.3 in a situation they cannot downgrade, feel free to look at https://github.com/vast-engineering/cassandra/tree/vast-cassandra

Upgrade from 2.0.9 to 2.1.3

2015-03-06 Thread Fredrik Larsson Stigbäck
to just start the on 2.1.3 directly after 2.0.9. Regards Fredrik

Re: Upgrade from 2.0.9 to 2.1.3

2015-03-06 Thread Fredrik Larsson Stigbäck
So no upgradeSSTables are required? /Fredrik 6 mar 2015 kl. 15:11 skrev Carlos Rolo r...@pythian.com: I would not recommend an upgrade to 2.1.x for now. Do you have any specific reason to upgrade? For upgrading from 2.0.9 you can just do a direct upgrade. Regards, Carlos Juzarte

Cassandra 2.1.3, Windows 7 clear snapshot

2015-02-26 Thread Fredrik Larsson Stigbäck
problems e.g. https://issues.apache.org/jira/browse/CASSANDRA-6283 https://issues.apache.org/jira/browse/CASSANDRA-6283 Are there any outstanding issues in 2.1.3 which specifically pinpoints manually clearing snapshots on Windows? Regards Fredrik

Snappy 1.1.0 Cassandra 2.1.2 compability

2014-12-15 Thread Fredrik Larsson Stigbäck
is compatible with 1.0.5. But might there be problems/data incompatibility in the future when upgrading Cassandra to a never version regarding *CompressionInfo.db files etc..? /Fredrik

Does Cassandra support running on Java 8?

2014-10-22 Thread Fredrik
Are there any official recomendations, validations/tests done with Cassandra = 2.0 on Java 8? Regards /Fredrik

mmaped files and swap

2013-03-13 Thread Fredrik
? Regards /Fredrik

Re: mmaped files and swap

2013-03-13 Thread Fredrik Stigbäck
sense when machines had 32MB RAM. Keeping your read 95th percentile low is mostly about removing deviations that cause requests to slow down, swap is one of the things that cause fluctuation becuase it is not predictable. On Wed, Mar 13, 2013 at 10:39 AM, Fredrik fredrik.l.stigb

Denormalization

2013-01-27 Thread Fredrik Stigbäck
updating those user data properties which might be spread out over many cf:s and many rows? Regards /Fredrik

Re: Denormalization

2013-01-27 Thread Fredrik Stigbäck
I don't have a current use-case. I was just curious how applications handle and how to think when modelling, since I guess denormalization might increase the complexity of the application. Fredrik 2013/1/27 Hiller, Dean dean.hil...@nrel.gov: There is a really a mix of denormalization

Question regarding hinted handoffs and restoring backup in cluster

2012-10-05 Thread Fredrik
to the backuped data. What is the recomended way to handle this situation? Removing the hints cf from the system tables before restart of the cluster nodes? Regards /Fredrik

Re: Remove node from cluster and have it run as a single node cluster by itself

2012-10-05 Thread Fredrik
I guess that the other nodes still gossips about the removed node. The node isn't removed from gossiper in the cluster until some amount of time have elapsed. My guess is that you haven't changed the cluster_name property in the cassandra.yaml on the removed node. Xu, Zaili skrev 2012-09-28

Re: Removed node, jumps back into the cluster

2012-09-12 Thread Fredrik Stigbäck
Wrong assumption of me. I found the answer in GossipDigestSynVerbHandler. I forgot to change the cluster name of the new cluster. /Fredrik 2012/9/11 Fredrik fredrik.l.stigb...@sitevision.se: I've tested a scenario where I wanted to reuse a removed node in a new cluster with same IP, maybe

Removed node, jumps back into the cluster

2012-09-11 Thread Fredrik
change IP on the removed node if you want to use it in another cluster? Please enlight me. Regards /Fredrik

Question regarding tombstone removal and compaction

2012-08-10 Thread Fredrik
a major compaction since there are only deletes which doesn't require double amount of SStable size when merging tombstones with the large SSTables? Regards /Fredrik

JNA on Windows

2012-07-05 Thread Fredrik Stigbäck
requirements. I'd be happy if someone could shed some light on this issue. Regards /Fredrik

Running Cassandra with IPv6

2012-07-03 Thread Fredrik
addresses with NIO on Windows with Java jdk7, (https://issues.apache.org/jira/browse/CASSANDRA-4359) which isn't a Cassandra issue anyway. Regards /Fredrik

Re: Question regarding major compaction.

2012-05-01 Thread Fredrik Stigbäck
/04/2012, at 9:37 PM, Fredrik wrote: Exactly, but why would reads be significantly slower over time when including just one more, although sometimes large, SSTable in the read? Ji Cheng skrev 2012-04-26 11:11: I'm also quite interested in this question. Here's my understanding

Question regarding major compaction.

2012-04-26 Thread Fredrik
while read performance will be good immediately following a major compaction, it will continually degrade until the next major compaction is manually invoked. For this reason, major compaction is NOT recommended by DataStax. Regards /Fredrik

Re: Question regarding major compaction.

2012-04-26 Thread Fredrik
may result in reading multiple sstables for a single row key. Please correct me if I am wrong. Cheng On Thu, Apr 26, 2012 at 3:50 PM, Fredrik fredrik.l.stigb...@sitevision.se mailto:fredrik.l.stigb...@sitevision.se wrote: In the tuning documentation regarding Cassandra, it's recomended

Hinted handoff bug?

2011-12-01 Thread Fredrik L Stigbäck
{ *queuedDeliveries.remove(endpoint);* } } Regards /Fredrik

Re: Hinted handoff bug?

2011-12-01 Thread Fredrik L Stigbäck
Yes, I'll do that. /Fredrik Sylvain Lebresne skrev 2011-12-01 11:10: You're right, good catch. Do you mind opening a ticket on jira (https://issues.apache.org/jira/browse/CASSANDRA)? -- Sylvain On Thu, Dec 1, 2011 at 10:03 AM, Fredrik L Stigbäck fredrik.l.stigb...@sitevision.se wrote: Hi

Clear snapshot on windows

2011-11-04 Thread Fredrik L Stigbäck
this be problem if we have seldom updated column family that wont be compacted very often? Is this considered a bug or is it something that won't be fixed due to the way Windows handles hard links? Regards /Fredrik

Commit log grows and grows

2011-11-01 Thread Fredrik Stigbäck
log CommitLogSegment(/var/lib/cassandra/commitlog/CommitLog-1320176934665.log); dirty is ; hasNext: false Could someone please clarify the relationship between commit log creation, removal/rotation and flush, drain. Regards /Fredrik

replication factor no nodes

2011-09-19 Thread Fredrik Stigbäck
factor == no nodes in cluster. Regards /Fredrik

Re: NullPointerException doing cleanup

2011-09-13 Thread Fredrik Stigbäck
Thanks. Will upgrade to 0.8.5. Regards /Fredrik 2011/9/13 Sylvain Lebresne sylv...@datastax.com This should be fixed in 0.8.5 (more precisely by https://issues.apache.org/jira/browse/CASSANDRA-3039) -- Sylvain On Tue, Sep 13, 2011 at 12:53 PM, Fredrik Stigbäck fredrik.l.stigb

Reading quorum

2011-06-03 Thread Fredrik Stigbäck
Does reading quorum mean only waiting for quorum respones or does it mean quorum respones with same latest timestamp? Regards /Fredrik