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https://issues.apache.org/jira/browse/HADOOP-3348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-3348:
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Attachment: 3348-2nd-option.patch
patch for 2nd option. I am not very sure if it is the right fix for this jira,
though it is a good change to have. The extra 'exists()' could be removed by a
little bigger patch.
larger questions are: For JVM global replacement for "file://" handler, is
LocalFileSystem appropriate? Does RawLocalFileSystem suite that better? etc.
If we could punt this issue by just changing the test a little bit, thats fine
too.
> TestUrlStreamHandler hangs on LINUX
> -----------------------------------
>
> Key: HADOOP-3348
> URL: https://issues.apache.org/jira/browse/HADOOP-3348
> Project: Hadoop Core
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.18.0
> Environment: LINUX 2.6.9
> Reporter: lohit vijayarenu
> Attachments: 3348-2nd-option.patch, Datanode_jstack.txt
>
>
> TestUrlStreamHandler sets setURLStreamHandlerFactory as
> {noformat}
> FsUrlStreamHandlerFactory factory =
> new org.apache.hadoop.fs.FsUrlStreamHandlerFactory();
> java.net.URL.setURLStreamHandlerFactory(factory);
> {noformat}
> After this, MiniDFSCluster seems to hang while Datanodes tries to register in
> setNewStorageID, specifically at
> {noformat}
> rand = SecureRandom.getInstance("SHA1PRNG").nextInt(Integer.MAX_VALUE);
> {noformat}
> jstack output shows that the main thread is stuck in
> RawLocalFileSystem$LocalFSFileInputStream.read
> (Attaching the jstack)
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