Re: Flink Streaming State Management
Hey Hilmi, here is a great example of how to use the Checkpointed interface: https://github.com/StephanEwen/flink-demos/blob/master/streaming-state-machine/src/main/scala/com/dataartisans/flink/example/eventpattern/StreamingDemo.scala#L82 On Wed, Jun 17, 2015 at 12:44 AM, Hilmi Yildirim hilmi.yildi...@neofonie.de wrote: Hi Matthias, great! Thank you. Best Regards, Hilmi Am 17.06.2015 um 09:38 schrieb Matthias J. Sax: Hi Hilmi, currently, this is not supported. However, state management is already work in progress and should be available soon. See https://github.com/apache/flink/pull/747 -Matthias On 06/17/2015 09:36 AM, Hilmi Yildirim wrote: Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi
Re: Flink Streaming State Management
Hey Hilmi, Flink currently supports user defined state through the Checkpointed interface. Using this interface the user can define what state should the system be aware of when doing snapshots for fault tolerance. The state returned in the snapshotState method will be checkpointed (and restored upon failure). Currently there is no explicit update function so the user need to implement his state updates as part of the operator logic (inside the map function for instance). After the 0.9.0 we will change the state interfaces to have explicit update functions, you can preview some of the functionality in the PR Matthias referenced, or here is a document for a more detailed discussion of this feature: https://docs.google.com/document/d/1nTn4Tpafsnt-TCT6L1vlHtGGgRevU90yRsUQEmkRMjk/edit?usp=sharing Cheers, Gyula Hilmi Yildirim hilmi.yildi...@neofonie.de ezt írta (időpont: 2015. jún. 17., Sze, 9:36): Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi -- -- Hilmi Yildirim Software Developer RD http://www.neofonie.de Besuchen Sie den Neo Tech Blog für Anwender: http://blog.neofonie.de/ Folgen Sie uns: https://plus.google.com/+neofonie http://www.linkedin.com/company/neofonie-gmbh https://www.xing.com/companies/neofoniegmbh Neofonie GmbH | Robert-Koch-Platz 4 | 10115 Berlin Handelsregister Berlin-Charlottenburg: HRB 67460 Geschäftsführung: Thomas Kitlitschko
Re: Flink Streaming State Management
Hi Hilmi, currently, this is not supported. However, state management is already work in progress and should be available soon. See https://github.com/apache/flink/pull/747 -Matthias On 06/17/2015 09:36 AM, Hilmi Yildirim wrote: Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi signature.asc Description: OpenPGP digital signature
Flink Streaming State Management
Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi -- -- Hilmi Yildirim Software Developer RD http://www.neofonie.de Besuchen Sie den Neo Tech Blog für Anwender: http://blog.neofonie.de/ Folgen Sie uns: https://plus.google.com/+neofonie http://www.linkedin.com/company/neofonie-gmbh https://www.xing.com/companies/neofoniegmbh Neofonie GmbH | Robert-Koch-Platz 4 | 10115 Berlin Handelsregister Berlin-Charlottenburg: HRB 67460 Geschäftsführung: Thomas Kitlitschko
Re: Flink Streaming State Management
Hi Matthias, great! Thank you. Best Regards, Hilmi Am 17.06.2015 um 09:38 schrieb Matthias J. Sax: Hi Hilmi, currently, this is not supported. However, state management is already work in progress and should be available soon. See https://github.com/apache/flink/pull/747 -Matthias On 06/17/2015 09:36 AM, Hilmi Yildirim wrote: Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi
Re: Flink Streaming State Management
Hi Gyula, thank you. Best Regards, Hilmi Am 17.06.2015 um 09:44 schrieb Gyula Fóra: Hey Hilmi, Flink currently supports user defined state through the Checkpointed interface. Using this interface the user can define what state should the system be aware of when doing snapshots for fault tolerance. The state returned in the snapshotState method will be checkpointed (and restored upon failure). Currently there is no explicit update function so the user need to implement his state updates as part of the operator logic (inside the map function for instance). After the 0.9.0 we will change the state interfaces to have explicit update functions, you can preview some of the functionality in the PR Matthias referenced, or here is a document for a more detailed discussion of this feature: https://docs.google.com/document/d/1nTn4Tpafsnt-TCT6L1vlHtGGgRevU90yRsUQEmkRMjk/edit?usp=sharing Cheers, Gyula Hilmi Yildirim hilmi.yildi...@neofonie.de mailto:hilmi.yildi...@neofonie.de ezt írta (időpont: 2015. jún. 17., Sze, 9:36): Hi, does Flink Streaming support state management? For example, I have a state which will be used inside the streaming operations but the state can be updated. For example: stream.map( use state for operation).updateState(update state). Best Regards, Hilmi -- -- Hilmi Yildirim Software Developer RD http://www.neofonie.de Besuchen Sie den Neo Tech Blog für Anwender: http://blog.neofonie.de/ Folgen Sie uns: https://plus.google.com/+neofonie http://www.linkedin.com/company/neofonie-gmbh https://www.xing.com/companies/neofoniegmbh Neofonie GmbH | Robert-Koch-Platz 4 | 10115 Berlin Handelsregister Berlin-Charlottenburg: HRB 67460 Geschäftsführung: Thomas Kitlitschko
