RE: Cassandra Data migration from 2.2.3 to 3.7

[Harika Vangapelli -T (hvangape - AKRAYA INC at Cisco)]

Jeff, Thanks for initial pointer. I want to add some more information to it.

This is to migrate from one cluster (2.2 version) to 3.7 . The client who is in 
2.2 cluster they don’t need down time.

So How the data is migrated to new cluster without down time with different 
versions?

Thanks,
Harika

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Harika Vangapelli
Engineer - IT
hvang...@cisco.com<mailto:hvang...@cisco.com>
Tel:

Cisco Systems, Inc.



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From: Jeff Jirsa [mailto:jji...@gmail.com]
Sent: Tuesday, August 1, 2017 2:48 PM
To: user@cassandra.apache.org
Subject: Re: Cassandra Data migration from 2.2.3 to 3.7

If you upgrade in place:

Stop each node one at a time
Swap binaries
Start each node
Run upgradesstables when all nodes are bounced

If you want to take data from 2.2 and put it into a 3.x cluster, you'll need to 
run upgradesstables on it offline somehow (like clone that 2.2 cluster/schema 
and run it offline with 3.x upgradesstables), then sstableloader it into place

Note that 3.7 is probably not the version you want - 3.11 is probably much more 
stable and solves some serious bugs (or 3.0.14 if you don't need features from 
3.7 ). The one exception to this would be if you're using a 3.7 lts branch 
(like instaclustr had at one point - and may still have).


--
Jeff Jirsa


On Aug 1, 2017, at 2:24 PM, Harika Vangapelli -T (hvangape - AKRAYA INC at 
Cisco) <hvang...@cisco.com<mailto:hvang...@cisco.com>> wrote:
Please help me understand data migration path from 2.2.3 to 3.7.


1.       Tried to take snapshot and load the snapshot using sstableloader; but 
it is throwing Streaming Exception.
Please advise.

Thanks,
Harika


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Harika Vangapelli
Engineer - IT
hvang...@cisco.com<mailto:hvang...@cisco.com>
Tel:

Cisco Systems, Inc.



United States
cisco.com<http://cisco.com>


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