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https://issues.apache.org/jira/browse/HDFS-15072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010290#comment-17010290
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Hudson commented on HDFS-15072:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17825 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17825/])
HDFS-15072. HDFS MiniCluster fails to start when run in directory path
(aajisaka: rev a43c177f1d4c2b6149a2680dd23d91103eca3be0)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java
> 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
>
> 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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