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https://issues.apache.org/jira/browse/HADOOP-8906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated HADOOP-8906:
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Attachment: HADOOP-8906.patch
Good catch, Jason. I now return an empty list (glob) if there are no matches
but the glob expander returned multiple patterns.
While testing, I discovered that I "accidentally" fixed a NPE in the old code
when the expander returned multiple parts, but one of them doesn't match. The
old code tried to iterate over the null.
> paths with multiple globs are unreliable
> ----------------------------------------
>
> Key: HADOOP-8906
> URL: https://issues.apache.org/jira/browse/HADOOP-8906
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Attachments: HADOOP-8906.patch, HADOOP-8906.patch, HADOOP-8906.patch
>
>
> Let's say we have have a structure of "$date/$user/stuff/file". Multiple
> globs are unreliable unless every directory in the structure exists.
> These work:
> date*/user
> date*/user/stuff
> date*/user/stuff/file
> These fail:
> date*/user/*
> date*/user/*/*
> date*/user/stu*
> date*/user/stu*/*
> date*/user/stu*/file
> date*/user/stuff/*
> date*/user/stuff/f*
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