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From Till Rohrmann <trohrm...@apache.org>
Subject Re: [POLL] Dropping savepoint format compatibility for 1.1.x in the Flink 1.4.0 release
Date Wed, 02 Aug 2017 13:16:01 GMT
+1

On Wed, Aug 2, 2017 at 9:12 AM, Stefan Richter <s.richter@data-artisans.com>
wrote:

> +1
>
> Am 28.07.2017 um 16:03 schrieb Stephan Ewen <sewen@apache.org>:
>
> Seems like no one raised a concern so far about dropping the savepoint
> format compatibility for 1.1 in 1.4.
>
> Leaving this thread open for some more days, but from the sentiment, it
> seems like we should go ahead?
>
> On Wed, Jul 12, 2017 at 4:43 PM, Stephan Ewen <sewen@apache.org> 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
>>
>>
>
>

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