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Re: [Proposal] Utilities for reading, transforming and creating Streaming savepoints


big +1 for this feature. A tool to get your state out of and into Flink
will be tremendously helpful.

On Mon, Aug 20, 2018 at 10:21 AM Aljoscha Krettek <aljoscha@xxxxxxxxxx>
wrote:

> +1 I'd like to have something like this in Flink a lot!
>
> > On 19. Aug 2018, at 11:57, Gyula Fóra <gyula.fora@xxxxxxxxx> wrote:
> >
> > Hi all!
> >
> > Thanks for the feedback and I'm happy there is some interest :)
> > Tomorrow I will start improving the proposal based on the feedback and
> will
> > get back to work.
> >
> > If you are interested working together in this please ping me and we can
> > discuss some ideas/plans and how to share work.
> >
> > Cheers,
> > Gyula
> >
> > Paris Carbone <parisc@xxxxxx> ezt írta (időpont: 2018. aug. 18., Szo,
> 9:03):
> >
> >> +1
> >>
> >> Might also be a good start to implement queryable stream state with
> >> snapshot isolation using that mechanism.
> >>
> >> Paris
> >>
> >>> On 17 Aug 2018, at 12:28, Gyula Fóra <gyula.fora@xxxxxxxxx> wrote:
> >>>
> >>> Hi All!
> >>>
> >>> I want to share with you a little project we have been working on at
> King
> >>> (with some help from some dataArtisans folks). I think this would be a
> >>> valuable addition to Flink and solve a bunch of outstanding production
> >>> use-cases and headaches around state bootstrapping and state analytics.
> >>>
> >>> We have built a quick and dirty POC implementation on top of Flink 1.6,
> >>> please check the README for some nice examples to get a quick idea:
> >>>
> >>> https://github.com/king/bravo
> >>>
> >>> *Short story*
> >>> Bravo is a convenient state reader and writer library leveraging the
> >>> Flink’s batch processing capabilities. It supports processing and
> writing
> >>> Flink streaming savepoints. At the moment it only supports processing
> >>> RocksDB savepoints but this can be extended in the future for other
> state
> >>> backends and checkpoint types.
> >>>
> >>> Our goal is to cover a few basic features:
> >>>
> >>>  - Converting keyed states to Flink DataSets for processing and
> >> analytics
> >>>  - Reading/Writing non-keyed operators states
> >>>  - Bootstrap keyed states from Flink DataSets and create new valid
> >>>  savepoints
> >>>  - Transform existing savepoints by replacing/changing some states
> >>>
> >>>
> >>> Some example use-cases:
> >>>
> >>>  - Point-in-time state analytics across all operators and keys
> >>>  - Bootstrap state of a streaming job from external resources such as
> >>>  reading from database/filesystem
> >>>  - Validate and potentially repair corrupted state of a streaming job
> >>>  - Change max parallelism of a job
> >>>
> >>>
> >>> Our main goal is to start working together with other Flink production
> >>> users and make this something useful that can be part of Flink. So if
> you
> >>> have use-cases please talk to us :)
> >>> I have also started a google doc which contains a little bit more info
> >> than
> >>> the readme and could be a starting place for discussions:
> >>>
> >>>
> >>
> https://docs.google.com/document/d/103k6wPX20kMu5H3SOOXSg5PZIaYpwdhqBMr-ppkFL5E/edit?usp=sharing
> >>>
> >>> I know there are a bunch of rough edges and bugs (and no tests) but our
> >>> motto is: If you are not embarrassed, you released too late :)
> >>>
> >>> Please let me know what you think!
> >>>
> >>> Cheers,
> >>> Gyula
> >>
> >>
>
>