[jira] [Created] (IGNITE-13577) Add support to graceful shutdown for ZookeeperDiscoverySpi

["Ivan Daschinskiy (Jira)" <ji...@apache.org>]

Ivan Daschinskiy created IGNITE-13577:
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             Summary: Add support to graceful shutdown for ZookeeperDiscoverySpi
                 Key: IGNITE-13577
                 URL: https://issues.apache.org/jira/browse/IGNITE-13577
             Project: Ignite
          Issue Type: Improvement
            Reporter: Ivan Daschinskiy
            Assignee: Ivan Daschinskiy


Proposed design:

*LN* -- node that performs graceful shutdown
*CRD* -- Leader (coordinator) of Ignite cluster
*N* -- Other nodes of Ignite cluster.

#  While elected, *LN* set watches on /<root>/ns
# *LN* create EPHEMERAL znode on /<root>/ns
# *LN* blocks stop until receive NODE_LEFT event.
# *CRD* receives notification and reset watches on /<root>/ns
# *CRD* generate NODE_LEFT event.
# *LN* receives events and continue stop process
# *CRD* on receiving all acks checks that there is no nodes on /<root>/ns and /<root>/n
related to *LN* and remove them if they presents.



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