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  1. Hadoop HDFS
  2. HDFS-13957

Fix incorrect option used in description of InMemoryAliasMap

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Details

    • Bug
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • 3.1.1
    • 3.2.0, 3.1.2, 3.3.0
    • documentation
    • None
    • Reviewed

    Description

      The incorrect option was used in description of InMemoryAliasMap.

      This is a LevelDB-based alias map that runs as a separate server in Namenode. The alias map itself can be created using the fs2img tool using the option -Ddfs.provided.aliasmap.leveldb.path=file:///path/to/leveldb/map/dingos.db -o org.apache.hadoop.hdfs.server.common.blockaliasmap.impl.LevelDBFileRegionAliasMap as in the example above.
      

      Here -o should be -b, -o is specified for output directory of generated fsimage. -b is for block output class. The right usage showed in the doc:

      hadoop org.apache.hadoop.hdfs.server.namenode.FileSystemImage \
        -Ddfs.provided.aliasmap.leveldb.path=/path/to/leveldb/map/dingos.db \
        -b org.apache.hadoop.hdfs.server.common.blockaliasmap.impl.LevelDBFileRegionAliasMap \
        -o file:///tmp/name \
        -u CustomResolver \
        hdfs://enfield/projects/ywqmd/incandenza
      

       

      Attachments

        1. HDFS-13957.001.patch
          1 kB
          Yiqun Lin

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            linyiqun Yiqun Lin
            linyiqun Yiqun Lin
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              Updated:
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