[
https://issues.apache.org/jira/browse/HADOOP-14600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16275443#comment-16275443
]
Hudson commented on HADOOP-14600:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13312 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13312/])
HADOOP-14600. LocatedFileStatus constructor forces RawLocalFS to exec a
(cdouglas: rev f9d195dfe9cc2c3e4659c3475319ac7c937b5c44)
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIO.java
* (add)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/StatUtils.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/permission/TestFsPermission.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RawLocalFileSystem.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/permission/FsPermission.java
* (edit)
hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestRawLocalFileSystemContract.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java
> LocatedFileStatus constructor forces RawLocalFS to exec a process to get the
> permissions
> ----------------------------------------------------------------------------------------
>
> Key: HADOOP-14600
> URL: https://issues.apache.org/jira/browse/HADOOP-14600
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.7.3
> Environment: file:// in a dir with many files
> Reporter: Steve Loughran
> Assignee: Ping Liu
> Fix For: 3.1.0
>
> Attachments: HADOOP-14600.001.patch, HADOOP-14600.002.patch,
> HADOOP-14600.003.patch, HADOOP-14600.004.patch, HADOOP-14600.005.patch,
> HADOOP-14600.006.patch, HADOOP-14600.007.patch, HADOOP-14600.008.patch,
> HADOOP-14600.009.patch, TestRawLocalFileSystemContract.java,
> command_line_test_result__linux.txt, command_line_test_result__windows.txt
>
>
> Reported in SPARK-21137. a {{FileSystem.listStatus}} call really craws
> against the local FS, because {{FileStatus.getPemissions}} call forces
> {{DeprecatedRawLocalFileStatus}} tp spawn a process to read the real UGI
> values.
> That is: for every other FS, what's a field lookup or even a no-op, on the
> local FS it's a process exec/spawn, with all the costs. This gets expensive
> if you have many files.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
