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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8299) ViewFileSystem link slash mount point crashes with IndexOutOfBoundsException
Date Wed, 26 Oct 2016 21:41:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15609760#comment-15609760
] 

Hudson commented on HADOOP-8299:
--------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10692 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/10692/])
HADOOP-8299. ViewFileSystem link slash mount point crashes with (wang: rev 22ff0eff4d58ac0beda7a5a3ae0e5d108da14f7f)
* (edit) hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/InodeTree.java
* (edit) hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFileSystemBaseTest.java


> ViewFileSystem link slash mount point crashes with IndexOutOfBoundsException
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-8299
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8299
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: viewfs
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Eli Collins
>            Assignee: Manoj Govindassamy
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HADOOP-8299.01.patch, HADOOP-8299.02.patch
>
>
> We currently assume [a typical viewfs client configuration|https://issues.apache.org/jira/secure/attachment/12507504/viewfs_TypicalMountTable.png]
is a set of non-overlapping mounts. This means every time you want to add a new top-level
directory you need to update the client-side mountable config. If users could specify a slash
mount, and then add additional mounts as necessary they could add a new top-level directory
without updating all client configs (as long as the new top-level directory was being created
on the NN the slash mount points to). This could be achieved by HADOOP-8298 (merge mounts,
since we're effectively merging all new mount points with slash) or having the notion of a
"default NN" for a mount table.



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