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Posted to issues@flink.apache.org by "Krzysztof Białek (JIRA)" <ji...@apache.org> on 2018/02/20 19:18:00 UTC
[jira] [Comment Edited] (FLINK-8660) Enable the user to provide
custom HAServices implementation
[ https://issues.apache.org/jira/browse/FLINK-8660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16370484#comment-16370484 ]
Krzysztof Białek edited comment on FLINK-8660 at 2/20/18 7:17 PM:
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[~StephanEwen] suggested to simplify configuration [https://github.com/apache/flink/pull/5530#issuecomment-366921300]
{quote}I would suggest to not split the config options between {{high-availability}} and factory that is only used in _CUSTOM_ mode, but use the {{high-availability}} option for both. The option describes the high availability services factory, with _NONE_ and _ZOOKEEPER_ as special constants/shortcuts.
Have a look at the {{StateBackendLoader}} class for an example of that.
[https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/state/StateBackendLoader.java#L92
]
{quote}
Thank you for this hint, I like this idea
was (Author: kbialek):
[~StephanEwen] suggested to simplify configuration [https://github.com/apache/flink/pull/5530#issuecomment-366921300]
{quote}I would suggest to not split the config options between {{high-availability}} and factory that is only used in _CUSTOM_ mode, but use the {{high-availability}} option for both. The option describes the high availability services factory, with _NONE_ and _ZOOKEEPER_ as special constants/shortcuts.
Have a look at the {{StateBackendLoader}} class for an example of that.
[https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/state/StateBackendLoader.java#L92]
{quote}
> Enable the user to provide custom HAServices implementation
> ------------------------------------------------------------
>
> Key: FLINK-8660
> URL: https://issues.apache.org/jira/browse/FLINK-8660
> Project: Flink
> Issue Type: Improvement
> Components: Cluster Management, Configuration, Distributed Coordination
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Krzysztof Białek
> Priority: Major
> Fix For: 1.6.0
>
>
> At the moment Flink uses ZooKeeper as HA backend.
> The goal of this improvement is to make Flink supporting more HA backends, also maintained as independent projects.
> The following changes are required to achieve it:
> # Add {{HighAvailabilityServicesFactory}} interface
> # Add new option {{HighAvailabilityMode.CUSTOM}}
> # Add new configuration property {{high-availability.factoryClass}}
> # Use the factory in {{HighAvailabilityServicesUtils}} to instantiate {{HighAvailabilityServices}}
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