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https://issues.apache.org/jira/browse/KAFKA-1390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13967934#comment-13967934
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Jun Rao commented on KAFKA-1390:
--------------------------------

A simpler, but probably more practical way is to just keep reading from ZK 
every 100ms until the expected value is found.

> TestUtils.waitUntilLeaderIsElectedOrChanged may wait longer than it needs
> -------------------------------------------------------------------------
>
>                 Key: KAFKA-1390
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1390
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 0.8.2
>            Reporter: Jun Rao
>
> The way that waitUntilLeaderIsElectedOrChanged() works is to wait for a ZK 
> callback on leader change. However, if the leader is already elected (and 
> won't change) at the time waitUntilLeaderIsElectedOrChanged() is called, this 
> function will wait for the full timeout, which is unnecessary.



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