Fwd: Replace classes at runtime

[Jayant Ameta]

---------- Forwarded message ----------
From: Jayant Ameta <[hidden email]>
Date: Thu, Dec 14, 2017 at 4:46 PM
Subject: Replace classes at runtime
To: user <[hidden email]>

[Tzu-Li (Gordon) Tai]

Hi Jayant,

Updating your job application / operator code at runtime is currently not
available in Flink.
It is however achievable via taking a savepoint of your job, and then
restoring from the savepoint with your upgraded application.

There's a few points to keep in mind, especially job state compatibility, to
allow smooth upgrades.
Please take a look at Upgrading Applications here [1] for more details on
that.

Cheers,
Gordon

[1]
https://ci.apache.org/projects/flink/flink-docs-release-1.4/ops/upgrading.html#restarting-streaming-applications



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[Jayant Ameta]

Hi Gordon,

Is there a way to update the job application without any downtime?

On Tue, Dec 19, 2017 at 12:09 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:

Hi Jayant,

Updating your job application / operator code at runtime is currently not
available in Flink.
It is however achievable via taking a savepoint of your job, and then
restoring from the savepoint with your upgraded application.

There's a few points to keep in mind, especially job state compatibility, to
allow smooth upgrades.
Please take a look at Upgrading Applications here [1] for more details on
that.

Cheers,
Gordon

[1]
https://ci.apache.org/projects/flink/flink-docs-release-1.4/ops/upgrading.html#restarting-streaming-applications



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