Re: Upgrade from 2.1 to 3.11

You may want to try upgrading to 3.11.3 instead which has some memory leaks fixes. On Tue, Aug 28, 2018 at 9:59 AM, Mun Dega wrote: > I am surprised that no one else ran into any issues with this version. GC > can't catch up fast enough and there is constant Full GC taking place. > > The result

Re: Upgrade from 2.1 to 3.11

Ma, did you try what Mohamadreza suggested? Have a such a large heap means you are getting a ton of stuff that needs full GC. On Tue, Aug 28, 2018 at 4:31 AM Pradeep Chhetri wrote: > You may want to try upgrading to 3.11.3 instead which has some memory > leaks fixes. > > On Tue, Aug 28, 2018 at

Cassandra 3.11 with NFS mounted system

Hello Folks, I've an virtualized environment running with VMware where Cassandra is humming on NFS mounted storage. As the application load increases ,they increase number of nodes in data center however writes are getting slower, nodes are flapping and application complains in write performan

RE: Upgrade from 2.1 to 3.11

You may want to check if coincidentally you’re having expired cells in heap. GC log should be able to tell you OR look for tombstones in system.log file. See your compactions are under control and normal. This may not be related to upgrade at all! From: Pradeep Chhetri [mailto:prad...@stashaw

SSTable Compression Ratio -1.0

Hello, nodetool tablestats my_kespace returns SSTable Compression Ratio -1.0 Can someone explain, what does -1.0 mean? Regards, Vitaliy - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-

RE: SSTable Compression Ratio -1.0

Compression ratio is ratio of compression to its original size - smaller is better; see it like compressed/uncompressed 1 would mean no change in size after compression! -Original Message- From: Vitaliy Semochkin [mailto:vitaliy...@gmail.com] Sent: Tuesday, August 28, 2018 12:03 PM To

commitlog content

Hello, I've noticed that after a stress test that does only inserts a commitlog content exceeds data dir 20 times. What can be cause of such behavior? Running nodetool compact did not change anything. Regards, Vitaliy - To unsu

Re: SSTable Compression Ratio -1.0

Thank you ZAIDI, can you please explain why mentioned ratio is negative? On Tue, Aug 28, 2018 at 8:18 PM ZAIDI, ASAD A wrote: > > Compression ratio is ratio of compression to its original size - smaller is > better; see it like compressed/uncompressed > 1 would mean no change in size after compr

Re: Cassandra 3.11 with NFS mounted system

Try to use iSCSI , also play around with mount configurations for the filesystem On Tue, Aug 28, 2018 at 8:46 AM ZAIDI, ASAD A wrote: > > Hello Folks, > > > > I’ve an virtualized environment running with VMware where Cassandra is > humming on NFS mounted storage. As the application load increase

Repairs are slow after upgrade to 3.11.3

Hi everyone, couple of days ago I have upgraded Cassandra from 3.11.2 to 3.11.3 and I see that repair time is practically doubled. Does someone else experience the same regression ? Regards, Maxim.