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https://issues.apache.org/jira/browse/FLINK-2366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14629515#comment-14629515
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Fabian Hueske commented on FLINK-2366:
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Besides being a distributed data processing engine, Flink offers an embedded
mode which executes Flink programs on Java collections.
Is this what you refer to? If yes, this mode does not require HA. It runs in
the same JVM process as your application and is not meant for large data sets.
If that process goes down, you don't need HA anymore. I don't see another
option than this mode to use Flink "as a library".
Except for the embedded collection execution mode, Flink runs as a distributed
system for which HA is a very useful feature. As [~senorcarbone] pointed out,
HA in a distributed system means leader election, Paxos, etc. ZK provides all
of this and reimplementing that in Flink is not an option, IMO.
> HA Without ZooKeeper
> --------------------
>
> Key: FLINK-2366
> URL: https://issues.apache.org/jira/browse/FLINK-2366
> Project: Flink
> Issue Type: Improvement
> Reporter: Suminda Dharmasena
> Priority: Minor
>
> Please provide a way to do HA without having to use ZK.
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