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https://issues.apache.org/jira/browse/HDFS-6264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13977317#comment-13977317
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Enis Soztutar commented on HDFS-6264:
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Correction: For HBase, it is not only a unit test that requires
createNonRecursive(). It is pretty important for doing fencing properly for the
dead region servers. See my comments at
https://issues.apache.org/jira/browse/HBASE-11045?focusedCommentId=13977198&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13977198
It is unfortunate that createNonRecursive() was deprecated without a proper
replacement. HBase relies on atomic createNonRecursive for semantic correctness
and prevent data loss via doing fencing by relying on atomic rename +
createNonRecursive().
> Provide FileSystem#create() variant which throws exception if parent
> directory doesn't exist
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-6264
> URL: https://issues.apache.org/jira/browse/HDFS-6264
> Project: Hadoop HDFS
> Issue Type: Task
> Reporter: Ted Yu
>
> FileSystem#createNonRecursive() is deprecated.
> However, there is no DistributedFileSystem#create() implementation which
> throws exception if parent directory doesn't exist.
> This limits clients' migration away from the deprecated method.
> For HBase, TestHLog#testFailedToCreateHLogIfParentRenamed relies on the
> behavior of FileSystem#createNonRecursive().
> Variant of create() method should be added which throws exception if parent
> directory doesn't exist.
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