Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-5513

CacheAdmin commands fail when using . as the path

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 3.0.0-alpha1
    • Fix Version/s: 2.3.0
    • Component/s: caching, tools
    • Labels:
      None

      Description

      The hdfs CLI commands generally accept "." as a path argument.
      e.g.

      hdfs dfs -rm .
      hdfs dfsadmin -allowSnapshot .
      

      I don't think it's very common to use the path "." but the CacheAdmin commands will fail saying that it cannot create a Path from an empty string.

      [schu@hdfs-c5-nfs ~]$ hdfs cacheadmin -removeDirectives -path .
      Exception in thread "main" java.lang.IllegalArgumentException: Can not create a Path from an empty string
      	at org.apache.hadoop.fs.Path.checkPathArg(Path.java:127)
      	at org.apache.hadoop.fs.Path.<init>(Path.java:184)
      	at org.apache.hadoop.hdfs.protocol.PathBasedCacheDirective$Builder.<init>(PathBasedCacheDirective.java:66)
      	at org.apache.hadoop.hdfs.DistributedFileSystem.listPathBasedCacheDirectives(DistributedFileSystem.java:1639)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin$RemovePathBasedCacheDirectivesCommand.run(CacheAdmin.java:365)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:82)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:87)
      [schu@hdfs-c5-nfs ~]$ hdfs cacheadmin -addDirective -path . -pool schu
      Exception in thread "main" java.lang.IllegalArgumentException: Can not create a Path from an empty string
      	at org.apache.hadoop.fs.Path.checkPathArg(Path.java:127)
      	at org.apache.hadoop.fs.Path.<init>(Path.java:184)
      	at org.apache.hadoop.hdfs.protocol.PathBasedCacheDirective$Builder.<init>(PathBasedCacheDirective.java:66)
      	at org.apache.hadoop.hdfs.DistributedFileSystem.addPathBasedCacheDirective(DistributedFileSystem.java:1598)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin$AddPathBasedCacheDirectiveCommand.run(CacheAdmin.java:180)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:82)
      	at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:87)
      

        Attachments

        1. hdfs-5513-1.patch
          4 kB
          Andrew Wang
        2. hdfs-5513-2.patch
          4 kB
          Andrew Wang
        3. hdfs-5513-3.patch
          3 kB
          Andrew Wang

          Activity

            People

            • Assignee:
              andrew.wang Andrew Wang
              Reporter:
              schu Stephen Chu
            • Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: