Hello Alaa,

Over time, people who tried seems to have failed to do a live migration
from windows to linux (and probably the other way around). It appears to be
something unsupported:

http://grokbase.com/t/cassandra/user/13anrd7qv1/mixed-linux-windows-cluster-
in-cassandra-1-2
http://grokbase.com/t/cassandra/user/115vy2hy4w/mixing-different-os-in-a-
cassandra-cluster

Those discussions are a bit old. Yet if this incompatibility still true,
you can probably:

1 - Stop the cluster and use sstable loader to load data in the new linux
cluster

or

2 - Fork writes to the new cluster, run the sstable loader then switch
clients, apparently doable without downtime

This 2 solutions were discussed there http://grokbase.com/t/
cassandra/user/125rhxydwb/migrating-from-a-windows-
cluster-to-a-linux-cluster

3 - Try to run mixed cluster in a testing environment, check the Cassandra
code, possibly make a ticket or offer a patch if it does not work. If doing
so, add a new data center with linux, not mixed node within the same rack
or data center. It's safer and more efficient. Even though in this specific
case it might fail.

C*heers,
-----------------------
Alain Rodriguez - @arodream - al...@thelastpickle.com
France / Spain

The Last Pickle - Apache Cassandra Consulting
http://www.thelastpickle.com


2018-01-26 20:49 GMT+00:00 Alaa Zubaidi (PDF) <alaa.zuba...@pdf.com>:

> Hi,
> What is the best way to migrate my Cassandra 2.x cluster from Windows to
> Linux?
> - Can I mix Windows and linux nodes in the same cluster? bring linux node
> one by one, and shutdown windows nodes one by one?
> - Can I use multiple racks feature? how would this work?
> - Other ideas?
>
> Regards.
> Alaa
>
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