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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14957) ReconfigurationTaskStatus is exposing guava Optional in its public api
Date Wed, 18 Oct 2017 11:09:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16209155#comment-16209155

Steve Loughran commented on HADOOP-14957:

Been around for a while (HDFS-6808) & tagged as public/stable; raises an interesting complications
w.r.t compatibility + [~daniel@cloudera.com]

It's used in ClientDatanodeProtocol, which makes it one of the most sensitive things to change.
Looking at the .proto & {{ReconfigurationProtocolUtils}} & {{ReconfigurationProtocolServerSideUtils}}
; it's clearly something where the protocol could be left alone while the data type and marshall/unmarshall
code was changed. Still pretty traumatic though

> ReconfigurationTaskStatus is exposing guava Optional in its public api
> ----------------------------------------------------------------------
>                 Key: HADOOP-14957
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14957
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: common
>    Affects Versions: 3.0.0-beta1
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen

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