Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Justin Sanciangco
2 nodes in each of the 3 racks? - Justin Sanciangco From: Alexander Dejanovski Reply-To: "user@cassandra.apache.org" Date: Tuesday, March 12, 2019 at 10:56 AM To: user Subject: Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Justin Sanciangco
conceptually nice to have 3 rack implementation, it does have some negative implications when not at a proper node count. What features are you trying to make use of with going with multirack? - Justin Sanciangco From: Laxmikant Upadhyay Reply-To: "user@cassandra.apache.org" Da

Network throughput requirements

2018-07-10 Thread Justin Sanciangco
Hello, What is the general network throughput (mb/s) requirement for Cassandra? Thanks in advance for your advise, Justin

Re: I experienced hang during 'nodetool drain' (attached threaddump)

2018-03-29 Thread Justin Sanciangco
Nodetool drain and nodetool flush are similar commands. Both commands flush memtable to disk. The difference is a nodetool drain will make C* stop listening for connections. From: Eunsu Kim Reply-To: "user@cassandra.apache.org" Date: Thursday, March 29, 2018 at 1:09 AM To: "user@cassandra.apac

RE: NVMe SSD benchmarking with Cassandra

2018-01-08 Thread Justin Sanciangco
635199] 2018-01-08 21:57:19:100 400 sec: 16037208 operations; 7840 current ops/sec; est completion in 34 minutes [INSERT: Count=78400, Max=3844095, Min=205, Avg=4716.95, 90=533, 99=875, 99.9=1020415, 99.99=383] com.datastax.driver.core.exceptions.WriteTimeoutException: Cassandra timeout during w

RE: NVMe SSD benchmarking with Cassandra

2018-01-05 Thread Justin Sanciangco
ttings that are the bulk of the problem. Without knowing how you are testing things or *any* metrics whatsoever whether it be C* or OS it’s going to be hard to help you out. Jon On Jan 5, 2018, at 5:41 PM, Justin Sanciangco mailto:jsancian...@blizzard.com>> wrote: Hello, I am curre

NVMe SSD benchmarking with Cassandra

2018-01-05 Thread Justin Sanciangco
be used? Any specific kernel parameters that should set in order to make best use of the PCIe NVMe SSD? Your insight would be well appreciated. Thank you, Justin Sanciangco

RE: Export/Importing keyspace from a different sized cluster

2016-09-19 Thread Justin Sanciangco
the directory structure on disk, and wants you to be at the equivalent of the parent/data_files_directory (so if you dump your sstables at /path/to/data/keyspace/table/, you’d want to run sstableloader from /path/to/data/ and provide keyspace/table/ as the location). From: Justin Sanciangco

RE: Export/Importing keyspace from a different sized cluster

2016-09-19 Thread Justin Sanciangco
Subject: Re: Export/Importing keyspace from a different sized cluster You can ship the sstables to the destination (or any other server with Cassandra binary tools installed) via ssh/rsync and run sstableloader on the destination cluster as well. From: Justin Sanciangco mailto:jsancian

Export/Importing keyspace from a different sized cluster

2016-09-19 Thread Justin Sanciangco
Hello, Assuming I can't get ports opened from source to target cluster to run sstableloader, what methods can I use to load a single keyspace from one cluster to another cluster of different size? Appreciate the help... Thanks, Justin