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https://issues.apache.org/jira/browse/HDFS-17014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17725809#comment-17725809
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Hualong Zhang commented on HDFS-17014:
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[~ayushtkn] Thank you for your reminder! I
After careful examination, we have discovered that this segment of logic in
{*}BaseTestHttpFSWith{*}#{*}testGetStatus{*} may potentially cause the issue.
{noformat}
FsStatus dfsFsStatus = dfs.getStatus(path);
FsStatus httpFsStatus = httpFs.getStatus(path);
// Validate used free and capacity are the same as DistributedFileSystem
assertEquals(dfsFsStatus.getUsed(), httpFsStatus.getUsed());
assertEquals(dfsFsStatus.getRemaining(), httpFsStatus.getRemaining());
assertEquals(dfsFsStatus.getCapacity(), httpFsStatus.getCapacity());
{noformat}
The reasons are as follows:
1.The *getStatus* API used to retrieve the used/remaining space of the
FileSystem may pose a problem. In {*}TestHttpFSWithHttpFSFileSystem{*}, all
*unit tests* share a single FileSystem and are executed in parallel, with file
writes or deletions occurring randomly. As a result, the usage size of the file
system may change at any time, causing the used/remaining values returned by
*httpFs.getStatus* to potentially differ from those returned by
{*}dfs.getStatus{*}, thereby resulting in test failures.
2.When conducting *unit tests* in {*}TestWebHDFS{*}, we utilized a separate
*MiniDFSCluster* to avoid encountering this issue.
We have the option of modifying the *unit tests* to only validate whether
used/remaining/capacity >= 0, or alternatively, using a new MiniDFSCluster in
this particular test to ensure that any writes or deletions performed by other
unit tests do not impact our test results.
> HttpFS Add Support getStatus API
> --------------------------------
>
> Key: HDFS-17014
> URL: https://issues.apache.org/jira/browse/HDFS-17014
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: webhdfs
> Affects Versions: 3.4.0
> Reporter: Hualong Zhang
> Assignee: Hualong Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> We should ensure that *WebHDFS* remains synchronized with {*}HttpFS{*}, as
> the former has already implemented the *getStatus* interface.
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