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https://issues.apache.org/jira/browse/HDFS-14771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16932350#comment-16932350
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He Xiaoqiao commented on HDFS-14771:
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Thanks [~jojochuang] and sorry for late response.
{quote}Once this features goes into branch-2 (which will become 2.10 release),
and that the feature is enabled, I assume the only upgrade path is 2.10 -->
3.3, correct?{quote}
Yes, it is truth. This is only path to upgrade before any tools or
backward-compatible solution offer. Do we need some more release notes or guide
doc?
> Backport HDFS-14617 to branch-2 (Improve fsimage load time by writing
> sub-sections to the fsimage index)
> --------------------------------------------------------------------------------------------------------
>
> Key: HDFS-14771
> URL: https://issues.apache.org/jira/browse/HDFS-14771
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: 2.10.0
> Reporter: He Xiaoqiao
> Assignee: He Xiaoqiao
> Priority: Major
> Labels: release-blocker
> Fix For: 2.10.0
>
> Attachments: HDFS-14771.branch-2.001.patch,
> HDFS-14771.branch-2.002.patch, HDFS-14771.branch-2.003.patch
>
>
> This JIRA aims to backport HDFS-14617 to branch-2: fsimage load time by
> writing sub-sections to the fsimage index.
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