Examples of org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker

Package org.apache.hadoop.hdfs.server.namenode

Examples of org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker

org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker
NameNodeResourceChecker provides a method - hasAvailableDiskSpace - which will return true if and only if the NameNode has disk space available on all required volumes, and any volume which is configured to be redundant. Volumes containing file system edits dirs are added by default, and arbitrary extra volumes may be configured as well.

      cluster = new MiniDFSCluster.Builder(conf)
          .numDataNodes(0)
          .nnTopology(MiniDFSNNTopology.simpleHATopology())
          .build();


      NameNodeResourceChecker mockResourceChecker = Mockito.mock(
          NameNodeResourceChecker.class);
      Mockito.doReturn(true).when(mockResourceChecker).hasAvailableDiskSpace();
      cluster.getNameNode(0).getNamesystem()
          .setNNResourceChecker(mockResourceChecker);

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