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https://issues.apache.org/jira/browse/HDFS-15072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Akira Ajisaka updated HDFS-15072:
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Fix Version/s: 3.2.2
3.1.4
> HDFS MiniCluster fails to start when run in directory path with a %
> -------------------------------------------------------------------
>
> Key: HDFS-15072
> URL: https://issues.apache.org/jira/browse/HDFS-15072
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.5, 3.3.0
> Environment: I encountered this on a Mac while running an HBase
> minicluster that was using Hadoop 2.7.5. However, the code looks the same in
> trunk so it likely affects most or all current versions.
> Reporter: Geoffrey Jacoby
> Assignee: Masatake Iwasaki
> Priority: Minor
> Fix For: 3.3.0, 3.1.4, 3.2.2
>
>
> FSVolumeImpl.initializeCacheExecutor calls Guava's ThreadPoolExecutorBuilder.
> setNameFormat, passing in the String representation of the parent File. Guava
> will take the String whole and pass it to String.format, which uses % as a
> special character. That means that if parent.toString() contains a percentage
> sign, followed by a character that's illegal to use as a formatter in
> String.format(), you'll get an exception that stops the MiniCluster from
> starting up.
> I did not check to see if this would also happen on a normal DataNode daemon.
> initializeCacheExecutor should escape the parent file name before passing it
> in.
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