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From "Stanislav Lukyanov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-10152) Allow warming up data region before a node has joined
Date Tue, 06 Nov 2018 18:20:00 GMT
Stanislav Lukyanov created IGNITE-10152:
-------------------------------------------

             Summary: Allow warming up data region before a node has joined
                 Key: IGNITE-10152
                 URL: https://issues.apache.org/jira/browse/IGNITE-10152
             Project: Ignite
          Issue Type: New Feature
            Reporter: Stanislav Lukyanov


After a node with existing PDS joins the cluster its performance will be low for a while -
until it loads all data into RAM. This is a feature of Ignite - cold restart - that allows
nodes to start as fast as possible.
However, it would be good to also allow "hot restart" - a way to preload as much data into
RAM as needed before the node has joined. Then the node will not slow the cluster down during
its warm-up.

There are several recent improvements with similar goals:
- IGNITE-8873 added methods to preload data of a specific partition
- IGNITE-7196 and IGNITE-9420 moved data recovery to before node joins the cluster

Combining the above approaches we could have allow a user to trigger synchronous preloading
right after the data recovery but before discovery starts up.



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