flink-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Gábor Gévay <gga...@gmail.com>
Subject Re: Redeployements and state
Date Thu, 14 Jan 2016 10:09:34 GMT
Hello,

You are probably looking for this feature:
https://issues.apache.org/jira/browse/FLINK-2976

Best,
Gábor




2016-01-14 11:05 GMT+01:00 Niels Basjes <Niels@basjes.nl>:
> Hi,
>
> I'm working on a streaming application using Flink.
> Several steps in the processing are state-full (I use custom Windows and
> state-full operators ).
>
> Now if during a normal run an worker fails the checkpointing system will be
> used to recover.
>
> But what if the entire application is stopped (deliberately) or stops/fails
> because of a problem?
>
> At this moment I have three main reasons/causes for doing this:
> 1) The application just dies because of a bug on my side or a problem like
> for example this (which I'm actually confronted with):  Failed to Update
> HDFS Delegation Token for long running application in HA mode
> https://issues.apache.org/jira/browse/HDFS-9276
> 2) I need to rebalance my application (i.e. stop, change parallelism, start)
> 3) I need a new version of my software to be deployed. (i.e. I fixed a bug,
> changed the topology and need to continue)
>
> I assume the solution will be in some part be specific for my application.
> The question is what features exist in Flink to support such a clean
> "continue where I left of" scenario?
>
> --
> Best regards / Met vriendelijke groeten,
>
> Niels Basjes

Mime
View raw message