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https://issues.apache.org/jira/browse/HDFS-16316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17781202#comment-17781202
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姚凡 edited comment on HDFS-16316 at 10/31/23 3:36 AM:
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public static boolean isRegularFile(File file, boolean allowLinks) {
if (file != null) {
if (allowLinks) {
return Files.isRegularFile(file.toPath());
}
return Files.isRegularFile(file.toPath(), LinkOption.NOFOLLOW_LINKS);
}
return true;
}
When a meta file that does not exist is transferred, the blk is incorrectly set
to corrupt. You need to check whether the file exists.
was (Author: yaofan):
!image-2023-10-31-11-24-39-387.png!
When a meta file that does not exist is transferred, the blk is incorrectly set
to corrupt. You need to check whether the file exists.
> Improve DirectoryScanner: add regular file check related block
> --------------------------------------------------------------
>
> Key: HDFS-16316
> URL: https://issues.apache.org/jira/browse/HDFS-16316
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.9.2
> Reporter: JiangHua Zhu
> Assignee: JiangHua Zhu
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: screenshot-1.png, screenshot-2.png, screenshot-3.png,
> screenshot-4.png
>
> Time Spent: 6h 20m
> Remaining Estimate: 0h
>
> Something unusual happened in the online environment.
> The DataNode is configured with 11 disks (${dfs.datanode.data.dir}). It is
> normal for 10 disks to calculate the used capacity, and the calculated value
> for the other 1 disk is much larger, which is very strange.
> This is about the live view on the NameNode:
> !screenshot-1.png!
> This is about the live view on the DataNode:
> !screenshot-2.png!
> We can look at the view on linux:
> !screenshot-3.png!
> There is a big gap here, regarding'/mnt/dfs/11/data'. This situation should
> be prohibited from happening.
> I found that there are some abnormal block files.
> There are wrong blk_xxxx.meta in some subdir directories, causing abnormal
> computing space.
> Here are some abnormal block files:
> !screenshot-4.png!
> Such files should not be used as normal blocks. They should be actively
> identified and filtered, which is good for cluster stability.
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