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https://issues.apache.org/jira/browse/HDFS-8480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14573818#comment-14573818
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Vinod Kumar Vavilapalli commented on HDFS-8480:
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[~zhz]/[~andrew.wang],
The root-cause HDFS-7929 was in 2.7.0. Do we have any proposals that we can get
in shortly for 2.7.1 for this issue. Otherwise, we should consider moving this
out, assuming this is not a major regression. Please comment, tx.
> Fix performance and timeout issues in HDFS-7929: use hard-links instead of
> copying edit logs
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-8480
> URL: https://issues.apache.org/jira/browse/HDFS-8480
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Priority: Critical
>
> HDFS-7929 copies existing edit logs to the storage directory of the upgraded
> {{NameNode}}. This slows down the upgrade process. This JIRA aims to use
> hard-linking instead of per-op copying to achieve the same goal.
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