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https://issues.apache.org/jira/browse/HBASE-17846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-17846.
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Assignee: (was: Guanghao Zhang)
> [JDK8] Use Optional instead of Nullable parameter in async client
> -----------------------------------------------------------------
>
> Key: HBASE-17846
> URL: https://issues.apache.org/jira/browse/HBASE-17846
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.0.0
> Reporter: Guanghao Zhang
> Priority: Major
>
> For master branch, we use a lot of java 8 features in async client, like
> lambda, stream, default method and so on. And java 8 support Optional, we can
> update some method to use Optional instead of Nullable parameter.
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