Re: [EXTERNAL] Apache Cassandra upgrade path

2019-07-29 Thread Jai Bheemsen Rao Dhanwada
streaming protocol between > nodes. > > > > > > Sean Durity – Staff Systems Engineer, Cassandra > > > > *From:* Alok Dwivedi > *Sent:* Friday, July 26, 2019 3:21 PM > *To:* user@cassandra.apache.org > *Subject:* Re: [EXTERNAL] Apache Cassandra upgrade path &

Re: [EXTERNAL] Apache Cassandra upgrade path

2019-07-27 Thread Romain Hardouin
ystems Engineer, Cassandra   From: Alok Dwivedi Sent: Friday, July 26, 2019 3:21 PM To: user@cassandra.apache.org Subject: Re: [EXTERNAL] Apache Cassandra upgrade path   Hi Sean The recommended practice for upgrade is to explicitly control protocol version in your application during upgrade proc

Re: [EXTERNAL] Apache Cassandra upgrade path

2019-07-26 Thread Jai Bheemsen Rao Dhanwada
between > nodes. > > > > > > Sean Durity – Staff Systems Engineer, Cassandra > > > > *From:* Alok Dwivedi > *Sent:* Friday, July 26, 2019 3:21 PM > *To:* user@cassandra.apache.org > *Subject:* Re: [EXTERNAL] Apache Cassandra upgrade path > > &g

RE: [EXTERNAL] Apache Cassandra upgrade path

2019-07-26 Thread Durity, Sean R
This would handle client protocol, but not streaming protocol between nodes. Sean Durity – Staff Systems Engineer, Cassandra From: Alok Dwivedi Sent: Friday, July 26, 2019 3:21 PM To: user@cassandra.apache.org Subject: Re: [EXTERNAL] Apache Cassandra upgrade path Hi Sean The recommended

Re: [EXTERNAL] Apache Cassandra upgrade path

2019-07-26 Thread Alok Dwivedi
Hi Sean The recommended practice for upgrade is to explicitly control protocol version in your application during upgrade process. Basically the protocol version is negotiated on first connection and based on chance it can talk to an already upgraded node first which means it will negotiate a highe

Re: [EXTERNAL] Apache Cassandra upgrade path

2019-07-26 Thread Jai Bheemsen Rao Dhanwada
Thanks Sean, In my use case all my clusters are multi DC, and I am trying my best effort to upgrade ASAP, however there is a chance since all machines are VMs. Also my key spaces are not uniform across DCs. some are replicated to all DCs and some of them are just one DC, so I am worried there. Is

RE: [EXTERNAL] Apache Cassandra upgrade path

2019-07-26 Thread Durity, Sean R
What you have seen is totally expected. You can’t stream between different major versions of Cassandra. Get the upgrade done, then worry about any down hardware. If you are using DCs, upgrade one DC at a time, so that there is an available environment in case of any disasters. My advice, though