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FileBasedStateStore is a QuorumStateStore that writes election state to a file.

Creating Instance

FileBasedStateStore takes the following to be created:

FileBasedStateStore is created when:

State File

FileBasedStateStore is given a state file when created.

The state file is quorum-state file under the data directory (of KafkaRaftManager).

The state file is loaded in readElectionState and updated in writeElectionState.

stateFile is deleted in clear.


ElectionState readElectionState()

readElectionState is part of the QuorumStateStore abstraction.

readElectionState is null (undefined) when stateFile does not exist.