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https://issues.apache.org/jira/browse/HADOOP-15565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924443#comment-16924443
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Hudson commented on HADOOP-15565:
---------------------------------
FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #17242 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17242/])
HADOOP-15565. Add an inner FS cache to ViewFileSystem, separate from the
(xkrogen: rev c92a3e94d80c86199e65735ee5aec4a6f02f50a3)
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/TestChRootedFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFileSystemBaseTest.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ChRootedFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestFileUtil.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFsDefaultValue.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFileSystemDelegation.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/Constants.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFileSystemDelegationTokenSupport.java
> ViewFileSystem.close doesn't close child filesystems and causes FileSystem
> objects leak.
> ----------------------------------------------------------------------------------------
>
> Key: HADOOP-15565
> URL: https://issues.apache.org/jira/browse/HADOOP-15565
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Fix For: 3.3.0
>
> Attachments: HADOOP-15565.0001.patch, HADOOP-15565.0002.patch,
> HADOOP-15565.0003.patch, HADOOP-15565.0004.patch, HADOOP-15565.0005.patch,
> HADOOP-15565.0006.bak, HADOOP-15565.0006.patch, HADOOP-15565.0007.patch,
> HADOOP-15565.0008.patch
>
>
> ViewFileSystem.close() does nothing but remove itself from FileSystem.CACHE.
> It's children filesystems are cached in FileSystem.CACHE and shared by all
> the ViewFileSystem instances. We could't simply close all the children
> filesystems because it will break the semantic of FileSystem.newInstance().
> We might add an inner cache to ViewFileSystem, let it cache all the children
> filesystems. The children filesystems are not shared any more. When
> ViewFileSystem is closed we close all the children filesystems in the inner
> cache. The ViewFileSystem is still cached by FileSystem.CACHE so there won't
> be too many FileSystem instances.
> The FileSystem.CACHE caches the ViewFileSysem instance and the other
> instances(the children filesystems) are cached in the inner cache.
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