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Posted to common-issues@hadoop.apache.org by "Ayush Saxena (Jira)" <ji...@apache.org> on 2020/07/01 07:39:00 UTC
[jira] [Updated] (HADOOP-17032) Handle an internal dir in viewfs
having multiple children mount points pointing to different filesystems
[ https://issues.apache.org/jira/browse/HADOOP-17032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ayush Saxena updated HADOOP-17032:
----------------------------------
Fix Version/s: 3.1.5
3.2.2
> Handle an internal dir in viewfs having multiple children mount points pointing to different filesystems
> --------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-17032
> URL: https://issues.apache.org/jira/browse/HADOOP-17032
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs, viewfs
> Reporter: Abhishek Das
> Assignee: Abhishek Das
> Priority: Major
> Fix For: 3.2.2, 3.3.1, 3.4.0, 3.1.5
>
>
> In case the viefs mount table is configured in a way where multiple child mount points are pointing to different file systems, the getContentSummary or getStatus don't return the expected result
> {code:java}
> mount link /a/b/ → hdfs://nn1/a/b
> mount link /a/d/ → file:///nn2/c/d{code}
> b has two files and d has 1 file. So getContentSummary on / should return 3 files.
> It also fails for the following scenario:
> {code:java}
> mount link /internalDir -> /internalDir/linternalDir2
> mount link /internalDir -> /internalDir/linkToDir2 -> hdfs://nn1/dir2{code}
> Exception:
> {code:java}
> java.io.IOException: Internal implementation error: expected file name to be /java.io.IOException: Internal implementation error: expected file name to be /
> at org.apache.hadoop.fs.viewfs.InternalDirOfViewFs.checkPathIsSlash(InternalDirOfViewFs.java:88) at org.apache.hadoop.fs.viewfs.InternalDirOfViewFs.getFileStatus(InternalDirOfViewFs.java:154) at org.apache.hadoop.fs.FileSystem.getContentSummary(FileSystem.java:1684) at org.apache.hadoop.fs.FileSystem.getContentSummary(FileSystem.java:1695) at org.apache.hadoop.fs.viewfs.ViewFileSystem.getContentSummary(ViewFileSystem.java:918) at org.apache.hadoop.fs.viewfs.ViewFileSystemBaseTest.testGetContentSummary(ViewFileSystemBaseTest.java:1106){code}
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