Externally load data into RocksDB backend

[Arpith P]

Hi,

Is it possible to load data to RocksDB backend externally(outside Flink ) using  common dbPath, so that it will be available to MapState inside ProcessFunction. I've external data available in JSON format which I want to load to RocksDb. One option is to make Stream from the JSON path and process it inside ProcessFunction but since I can't modify existing ProcessFunction ;I'm thinking of alternate ways of doing it.

Thanks,

Arpith

[Akshay Aggarwal]

Hi Arpith,

You should look into the State Processor API [1], it can be used to bootstrap state, and also for reading and modifying existing state.

[1] https://ci.apache.org/projects/flink/flink-docs-stable/dev/libs/state_processor_api.html#writing-new-savepoints 

Thanks,
Akshay Aggarwal

On Tue, Oct 13, 2020 at 10:31 PM Arpith P <[hidden email]> wrote:

Hi,

Is it possible to load data to RocksDB backend externally(outside Flink ) using  common dbPath, so that it will be available to MapState inside ProcessFunction. I've external data available in JSON format which I want to load to RocksDb. One option is to make Stream from the JSON path and process it inside ProcessFunction but since I can't modify existing ProcessFunction ;I'm thinking of alternate ways of doing it.

Thanks,

Arpith

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[Daksh Talwar]

I believe you're trying to bootstrap state for an operator. If yes, then it might be worthwhile to check out State Processor API.

On Tue, Oct 13, 2020 at 10:31 PM Arpith P <[hidden email]> wrote:

Hi,

Is it possible to load data to RocksDB backend externally(outside Flink ) using  common dbPath, so that it will be available to MapState inside ProcessFunction. I've external data available in JSON format which I want to load to RocksDb. One option is to make Stream from the JSON path and process it inside ProcessFunction but since I can't modify existing ProcessFunction ;I'm thinking of alternate ways of doing it.

Thanks,

Arpith

-----------------------------------------------------------------------------------------

This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.

 

Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the organization. Any information on shares, debentures or similar instruments, recommended product pricing, valuations and the like are for information purposes only. It is not meant to be an instruction or recommendation, as the case may be, to buy or to sell securities, products, services nor an offer to buy or sell securities, products or services unless specifically stated to be so on behalf of the Flipkart group. Employees of the Flipkart group of companies are expressly required not to make defamatory statements and not to infringe or authorise any infringement of copyright or any other legal right by email communications. Any such communication is contrary to organizational policy and outside the scope of the employment of the individual concerned. The organization will not accept any liability in respect of such communication, and the employee responsible will be personally liable for any damages or other liability arising.

 

Our organization accepts no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in writing. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.

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