Partial upgrade possible?

Hi,
I'm using 0.19.3 and it seems quite ancient version now :slight_smile:
So, I'm thinking of upgrade to the latest version 0.20.2.
Also, thinking of upgrade java6 to java7.
I have 19 data nodes and a bunch of non-data client nodes.

Can I upgrade partially?
For example, all clients and some of data nodes stay as is (0.19.3 on Java6), while some data nodes go to newer version (ex. 0.20.2 on Java7).

Hello,

No, this seems to cause problems - a fair number of people tried this -
just check the ES mailing list archives:

http://search-lucene.com/?q=cluster+upgrade+version&fc_project=ElasticSearch&fc_type=mail+hash+user

Otis

ELASTICSEARCH Performance Monitoring - http://sematext.com/spm/index.html

On Tuesday, January 8, 2013 2:23:33 PM UTC-5, arta wrote:

Hi,
I'm using 0.19.3 and it seems quite ancient version now :slight_smile:
So, I'm thinking of upgrade to the latest version 0.20.2.
Also, thinking of upgrade java6 to java7.
I have 19 data nodes and a bunch of non-data client nodes.

Can I upgrade partially?
For example, all clients and some of data nodes stay as is (0.19.3 on
Java6), while some data nodes go to newer version (ex. 0.20.2 on Java7).

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Thank you Otis, for the pointer.
I see mixing Java6 and Java7 is not a good idea, even for clients.
But how about ES 0.19.3 and 0.20.2?
I could not find any related post.
Can we mix them?

You can definitely NOT have different ElasticSearch major versions between
nodes in the same cluster (and between clients). I have also seen issues
between minor versions (0.19.2 and 0.19.8). Each new major version of
ElasticSearch is guaranteed to not be backwards compatible. The Lucene
indices should be fine, but not the communication between nodes.

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Ivan

On Tue, Jan 8, 2013 at 3:04 PM, arta artasano@sbcglobal.net wrote:

Thank you Otis, for the pointer.
I see mixing Java6 and Java7 is not a good idea, even for clients.
But how about ES 0.19.3 and 0.20.2?
I could not find any related post.
Can we mix them?

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Thank you very much Ivan.
I will upgrade all at once, then.

Hi Arta,

I need to perform similar upgrade. It would be great to hear how it goes. If you could post your experience back to the group, that would be fantastic.

Cheers
Dan

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Dan Fairs | dan@secondsync.com | @danfairs | secondsync.com

On 9 Jan 2013, at 01:18, arta artasano@sbcglobal.net wrote:

Thank you very much Ivan.
I will upgrade all at once, then.

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View this message in context: http://elasticsearch-users.115913.n3.nabble.com/Partial-upgrade-possible-tp4027851p4027874.html
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--

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Hi all

I need to perform similar upgrade. It would be great to hear how it
goes. If you could post your experience back to the group, that would
be fantastic.

I blogged my process for upgrading a running cluster a while back:

hth

clint

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Thanks Clint!

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Dan Fairs | dan@secondsync.com | @danfairs | secondsync.com

On 9 Jan 2013, at 10:39, Clinton Gormley clint@traveljury.com wrote:

Hi all

I need to perform similar upgrade. It would be great to hear how it
goes. If you could post your experience back to the group, that would
be fantastic.

I blogged my process for upgrading a running cluster a while back:

https://gist.github.com/3888120

hth

clint

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