Till Rohrmann created FLINK-6134:
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Summary: Set UUID(0L, 0L) as default leader session id
Key: FLINK-6134
URL: https://issues.apache.org/jira/browse/FLINK-6134
Project: Flink
Issue Type: Improvement
Components: Distributed Coordination
Affects Versions: 1.3.0
Reporter: Till Rohrmann
Assignee: Till Rohrmann
Priority: Minor
Fix For: 1.3.0
The leader election/retrieval services use the {{null}} value as the default
leader id in the standalone case but also as no active leader in the ZooKeeper
case. This is ambiguous and therefore I propose to change the default leader id
to {{UUID(0L, 0L)}}. Consequently, a {{null}} leader id value can then indicate
that there is no active leader available.
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