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https://issues.apache.org/jira/browse/FLINK-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15934674#comment-15934674
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ASF GitHub Bot commented on FLINK-6134:
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Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3578
Good fix!
Changes look good. Pending CI success, +1 to merge
> 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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