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https://issues.apache.org/jira/browse/HADOOP-15465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16476322#comment-16476322
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Steve Loughran commented on HADOOP-15465:
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Shell is tagged as Public + Evolving, making it part of our public APIs. People
may be using it with an expectation of stability, something [we
promise|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Compatibility.html#Java_Binary_compatibility_for_end-user_applications_i.e._Apache_Hadoop_ABI]
But: I don't see anyone using it, as FileUtils.symlink is picked up directly.
Deprecating is safest and must be done for at least one dot release; also good
to do the due diligence first and find out if anyone has been using it. I've
just checked spark in my IDE; all is well there. Normally I'd suspect HBase and
then Hive as the ones most prone to using internal stuff.
> Deprecate WinUtils#Symlinks by using native java code
> -----------------------------------------------------
>
> Key: HADOOP-15465
> URL: https://issues.apache.org/jira/browse/HADOOP-15465
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Íñigo Goiri
> Assignee: Giovanni Matteo Fumarola
> Priority: Major
> Attachments: HADOOP-15465.v0.patch, HADOOP-15465.v0.proto.patch
>
>
> Hadoop uses the shell to create symbolic links. Now that Hadoop relies on
> Java 7+, we can deprecate all the shell code and rely on the Java APIs.
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