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From Günter Hipler <guenter.hip...@unibas.ch>
Subject Re: [POLL] Dropping savepoint format compatibility for 1.1.x in the Flink 1.4.0 release
Date Wed, 12 Jul 2017 19:02:34 GMT
+1 to drop Java 7 support


On 12.07.2017 16:43, Stephan Ewen wrote:
> Hi users!
>
> Flink currently maintains backwards compatibility for savepoint 
> formats, which means that savepoints taken with Flink version 1.1.x 
> and 1.2.x can be resumed in Flink 1.3.x
>
> We are discussing how many versions back to support. The proposition 
> is the following:
>
> *   Suggestion: Flink 1.4.0 will be able to resume savepoints taken 
> with version 1.3.x and 1.2.x, but not savepoints from version 1.1.x 
> and 1.0.x*
>
>
> The reason for that is that there is a lot of code mapping between the 
> completely different legacy format (1.1.x, not re-scalable) and the 
> key-group-oriented format (1.2.x onwards, re-scalable). It would 
> greatly help the development of state and checkpointing features to 
> drop that old code.
>
> Please let us know if you have concerns about that.
>
> Best,
> Stephan
>

-- 
Universität Basel
Universitätsbibliothek
Günter Hipler
Projekt SwissBib
Schoenbeinstrasse 18-20
4056 Basel, Schweiz
Tel.: + 41 (0)61 267 31 12 Fax: ++41 61 267 3103
E-Mail guenter.hipler@unibas.ch
URL: www.swissbib.org  / http://www.ub.unibas.ch/


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