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Posted to common-issues@hadoop.apache.org by "Arun Suresh (JIRA)" <ji...@apache.org> on 2017/09/29 21:43:06 UTC
[jira] [Updated] (HADOOP-12455) fs.Globber breaks on colon in
filename; doesn't use Path's handling for colons
[ https://issues.apache.org/jira/browse/HADOOP-12455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun Suresh updated HADOOP-12455:
---------------------------------
Is this still on target for 2.9.0 ? If not, can we we push this out to the next major release ?
> fs.Globber breaks on colon in filename; doesn't use Path's handling for colons
> ------------------------------------------------------------------------------
>
> Key: HADOOP-12455
> URL: https://issues.apache.org/jira/browse/HADOOP-12455
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.7.2
> Reporter: Daniel Barclay
> Assignee: Rich Haase
> Attachments: HADOOP-12455.patch
>
>
> {{org.apache.hadoop.fs.Globber.glob()}} breaks when a searched directory
> contains a file whose simple name contains a colon.
> The problem seem to be in the code currently at lines 258 and 257
> [https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/Globber.java#L257]:
> {noformat}
> 256: // Set the child path based on the parent path.
> 257: child.setPath(new Path(candidate.getPath(),
> 258: child.getPath().getName()));
> {noformat}
> That last line should probably be:
> {noformat}
> new Path(null, null, child.getPath().getName())));
> {noformat}
>
> The bug in the current code is that:
> 1) {{child.getPath().getName()}} gets the simple name (last segment) of the child {{Path}} as a _raw_ string (not necessarily the corresponding relative _{{Path}}_ string), and
> 2) that raw string is passed as {{Path(Path, String)}}'s second argument, which takes a _{{Path}}_ string.
> When that raw string contains a colon (e.g., {{xxx:yyy}}), it looks like a {{Path}} string that specifies a scheme ("{{xxx}}") and has a relative path "{{yyy}}}"--but that combination isn't allowed, so trying to constructing a {{Path}} with it (as {{Path(Path, String)}} does inside) throws an exception, aborting the entire {{glob()}} call.
>
> Adding the call to {{Path(String, String, String)}} does the equivalent of converting the raw string "{{xxx:yyy}}" to the {{Path}} string "{{./xxx:yyy}}", so the part before the colon is not taken as a scheme.
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