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https://issues.apache.org/jira/browse/HDFS-8480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597705#comment-14597705
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Hudson commented on HDFS-8480:
------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #2165 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/2165/])
HDFS-8480. Fix performance and timeout issues in HDFS-7929 by using hard-links
to preserve old edit logs, instead of copying them. (Zhe Zhang via Colin P.
McCabe) (cmccabe: rev 7b424f938c3c306795d574792b086d84e4f06425)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUpgrade.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNUpgradeUtil.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> Fix performance and timeout issues in HDFS-7929 by using hard-links to
> preserve old edit logs instead of copying them
> ---------------------------------------------------------------------------------------------------------------------
>
> 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
> Fix For: 2.7.1
>
> Attachments: HDFS-8480.00.patch, HDFS-8480.01.patch,
> HDFS-8480.02.patch, HDFS-8480.03.patch
>
>
> 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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