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From "Olivier Delalleau (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8761) Windows HDFS daemon - datanode.DirectoryScanner: Error compiling report (...) XXX is not a prefix of YYY
Date Sun, 12 Jul 2015 00:07:04 GMT
Olivier Delalleau created HDFS-8761:

             Summary: Windows HDFS daemon - datanode.DirectoryScanner: Error compiling report
(...) XXX is not a prefix of YYY
                 Key: HDFS-8761
                 URL: https://issues.apache.org/jira/browse/HDFS-8761
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: HDFS
    Affects Versions: 2.7.1
         Environment: Windows 7, Java SDK 1.8.0_45
            Reporter: Olivier Delalleau
            Priority: Minor

I'm periodically seeing errors like the one below output by the HDFS daemon (started with
start-dfs.cmd). This is with the default settings for data location. I assume it may be fixable
by specifying a path with the drive letter in the config file, however I haven't be able to
do that (see http://stackoverflow.com/questions/31353226/setting-hadoop-tmp-dir-on-windows-gives-error-uri-has-an-authority-component).

15/07/11 17:29:57 ERROR datanode.DirectoryScanner: Error compiling report
java.util.concurrent.ExecutionException: java.lang.RuntimeException: \tmp\hadoop-odelalleau\dfs\data
is not a prefix of D:\tmp\hadoop-odelalleau\dfs\data\current\BP-1474392971-\current\finalized\subdir0\subdir0\blk_1073741825
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)
        at java.util.concurrent.FutureTask.get(FutureTask.java:192)
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getDiskReport
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.scan(Director
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(Dir
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.run(Directory
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:51

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