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https://issues.apache.org/jira/browse/HADOOP-16247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16818928#comment-16818928
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Wei-Chiu Chuang commented on HADOOP-16247:
------------------------------------------
Hi [~kpalanisamy] thanks for reporting the issue!
Do you have a test case that reproduces the bug? The tests pass even if I
remove the fix.
To reproduce, I think you'll need to patch the code a little bit:
{code}
public static int readStream(String path) throws Exception{
URL url = new URL(path);
- URI uri = url.toURI();
- FileSystem fs = FileSystem.get(uri, CONFIGURATION);
- FSDataInputStream fsdis = fs.open(new Path(uri));
- return fsdis.available();
+ InputStream is = url.openStream();
+ return is.available();
+
}
{code}
> NPE in FsUrlConnection
> ----------------------
>
> Key: HADOOP-16247
> URL: https://issues.apache.org/jira/browse/HADOOP-16247
> Project: Hadoop Common
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 3.1.2
> Reporter: Karthik Palanisamy
> Assignee: Karthik Palanisamy
> Priority: Major
> Attachments: HADOOP-16247-001.patch, HADOOP-16247-002.patch,
> HADOOP-16247-003.patch, HADOOP-16247-004.patch
>
>
> FsUrlConnection doesn't handle relativePath correctly after the change
> [HADOOP-15217|https://issues.apache.org/jira/browse/HADOOP-15217]
> {code}
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.hadoop.fs.Path.isUriPathAbsolute(Path.java:385)
> at org.apache.hadoop.fs.Path.isAbsolute(Path.java:395)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:87)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:636)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:930)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:631)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:454)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:146)
> at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:347)
> at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:899)
> at org.apache.hadoop.fs.FsUrlConnection.connect(FsUrlConnection.java:62)
> at
> org.apache.hadoop.fs.FsUrlConnection.getInputStream(FsUrlConnection.java:71)
> at java.net.URL.openStream(URL.java:1045)
> at UrlProblem.testRelativePath(UrlProblem.java:33)
> at UrlProblem.main(UrlProblem.java:19)
> {code}
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