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https://issues.apache.org/jira/browse/HBASE-18878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189214#comment-16189214
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Appy commented on HBASE-18878:
------------------------------
Uploaded patch with only return calls changed to optional.
{noformat}
These functions have been changed to return Optional<T> instead of T, where T =
old return type.
- ObserverContext#getCaller
- RpcCallContext#getRequestUser
- RpcCallContext#getRequestUserName
- RpcServer#getCurrentCall
- RpcServer#getRequestUser
- RpcServer#getRequestUserName
- RpcServer#getRemoteAddress
- ServerCall#getRequestUse
{noformat}
> Use Optional instead of Nullable annotation in ObserverContext to better
> describe that the caller may not be presented
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-18878
> URL: https://issues.apache.org/jira/browse/HBASE-18878
> Project: HBase
> Issue Type: Sub-task
> Components: Coprocessors
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Fix For: 2.0.0-alpha-4
>
> Attachments: HBASE-18878.master.001.patch, HBASE-18878.patch,
> HBASE-18878-v1.patch
>
>
> I've already done lots of Nullable to Optional change when purging the
> interfaces for CP. This is a big one so open a separated issue for it.
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