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https://issues.apache.org/jira/browse/HADOOP-18193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lei Yang updated HADOOP-18193:
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Description:
Defining following client mount table config is not supported in INodeTree and
will throw FileAlreadyExistsException
fs.viewfs.mounttable.link./foo/bar=hdfs://nn1/foo/bar
fs.viewfs.mounttable.link./foo=hdfs://nn02/foo
INodeTree has 2 methods that need change to support nested mount points.
createLink(..)
resolve(..)
ViewFileSystem and ViewFs referes INodeTree.resolve(..) to resolve path to
specific mount point. No changes are expected in both classes.
was:
Defining following client mount table config is not supported in INodeTree and
will throw FileAlreadyExistsException
fs.viewfs.mounttable.link./foo/bar=hdfs://nn1/foo/bar
fs.viewfs.mounttable.link./foo=hdfs://nn02/foo
> Support nested mount points in INodeTree
> ----------------------------------------
>
> Key: HADOOP-18193
> URL: https://issues.apache.org/jira/browse/HADOOP-18193
> Project: Hadoop Common
> Issue Type: Improvement
> Components: viewfs
> Affects Versions: 2.10.0
> Reporter: Lei Yang
> Priority: Major
>
> Defining following client mount table config is not supported in INodeTree
> and will throw FileAlreadyExistsException
> fs.viewfs.mounttable.link./foo/bar=hdfs://nn1/foo/bar
> fs.viewfs.mounttable.link./foo=hdfs://nn02/foo
>
> INodeTree has 2 methods that need change to support nested mount points.
> createLink(..)
> resolve(..)
>
> ViewFileSystem and ViewFs referes INodeTree.resolve(..) to resolve path to
> specific mount point. No changes are expected in both classes.
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