Sergey Chugunov created IGNITE-13189:
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Summary: Maintenance mode switch and defragmentation process
initialization
Key: IGNITE-13189
URL: https://issues.apache.org/jira/browse/IGNITE-13189
Project: Ignite
Issue Type: Sub-task
Reporter: Sergey Chugunov
As described in IEP-47 defragmentation is performed when a node enters a
special mode called maintenance mode.
Discussion on dev-list clarifies algorithm to enter maintenance mode:
# Special key is written to local metastorage.
# Node is restarted.
# Node observes the key on startup and enters maintenance mode.
Node should be fully-functioning in that mode but should not join the rest of
the cluster and participate in any regular activity like handling cache
operations.
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