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https://issues.apache.org/jira/browse/HDFS-9715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15129665#comment-15129665
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Hudson commented on HDFS-9715:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #9234 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9234/])
HDFS-9715. Check storage ID uniqueness on datanode startup (Contributed
(vinayakumarb: rev 04375756a5ed6e907ee7548469c2c508aebbafb7)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/FSImageTestUtil.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/UpgradeUtilities.java
> Check storage ID uniqueness on datanode startup
> -----------------------------------------------
>
> Key: HDFS-9715
> URL: https://issues.apache.org/jira/browse/HDFS-9715
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.7.2
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Fix For: 2.8.0
>
> Attachments: HDFS-9715.00.patch, HDFS-9715.01.patch,
> HDFS-9715.02.patch, HDFS-9715.03.patch
>
>
> We should fix this to check storage ID uniqueness on datanode startup. If
> someone has manually edited the storage ID files, or if they have duplicated
> a directory (or re-added an old disk) they could end up with a duplicate
> storage ID and not realize it.
> The HDFS-7575 fix does generate storage UUID for each storage, but not checks
> the uniqueness of these UUIDs.
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