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https://issues.apache.org/jira/browse/BOOKKEEPER-702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13822281#comment-13822281
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Steve Loughran commented on BOOKKEEPER-702:
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could you paste in the discussion/explain why you don't want to move up
protobuf? I know it's a traumatic migration because google broke the APIs, but
as we did it for Hadoop and HBase in near lockstep it'd be good to have
bookkeeper in sync
> Upgrade protobuf-java to 2.5.0 version
> --------------------------------------
>
> Key: BOOKKEEPER-702
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-702
> Project: Bookkeeper
> Issue Type: Improvement
> Reporter: Rakesh R
> Assignee: Rakesh R
> Priority: Blocker
> Fix For: 4.4.0
>
> Attachments: 0001-BOOKKEEPER-702.patch, 0002-BOOKKEEPER-702.patch
>
>
> HDFS is using BK for the shared memory approach through BKJM plugin.
> Presently HDFS is using Bookkeeper4.0.0 version and when tries to upgrade to
> latest 4.2.2 version, there is a conflicts in protobuf versions between the
> components. Latest HDFS 2.1 branch is using protobuf-java-2.5.0 version, but
> BK has protobuf-java-2.4.1 version.
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