Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.DistributedFileSystem.rename()

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    DistributedFileSystem fs = (DistributedFileSystem) cluster.getFileSystem();
    OutputStream out = null;
    try {
      fs.mkdirs(new Path("/test-target"));
      out = fs.create(new Path("/test-source/foo")); // don't close
      fs.rename(new Path("/test-source/"), new Path("/test-target/"));

      fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
      cluster.getNameNodeRpc().saveNamespace();
      fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
    } finally {
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      }
      assertTrue(hasException);

      // 9: Move /nqdir0/qdir1/qdir21/nqdir32 /nqdir0/qdir1/qdir20/nqdir30
      tempPath = new Path(quotaDir2, "nqdir30");
      dfs.rename(new Path(quotaDir3, "nqdir32"), tempPath);
      c = dfs.getContentSummary(quotaDir2);
      assertEquals(c.getDirectoryCount(), 4);
      assertEquals(c.getQuota(), 7);
      c = dfs.getContentSummary(quotaDir1);
      assertEquals(c.getDirectoryCount(), 6);
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      assertEquals(c.getQuota(), 6);

      // 10: Move /nqdir0/qdir1/qdir20/nqdir30 to /nqdir0/qdir1/qdir21
      hasException = false;
      try {
        assertFalse(dfs.rename(tempPath, quotaDir3));
      } catch (NSQuotaExceededException e) {
        hasException = true;
      }
      assertTrue(hasException);
      assertTrue(dfs.exists(tempPath));
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      assertFalse(dfs.exists(new Path(quotaDir3, "nqdir30")));
     
      // 10.a: Rename /nqdir0/qdir1/qdir20/nqdir30 to /nqdir0/qdir1/qdir21/nqdir32
      hasException = false;
      try {
        assertFalse(dfs.rename(tempPath, new Path(quotaDir3, "nqdir32")));
      } catch (QuotaExceededException e) {
        hasException = true;
      }
      assertTrue(hasException);
      assertTrue(dfs.exists(tempPath));
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      assertTrue(hasException);
      assertTrue(dfs.exists(tempPath));
      assertFalse(dfs.exists(new Path(quotaDir3, "nqdir32")));

      // 11: Move /nqdir0/qdir1/qdir20/nqdir30 to /nqdir0
      assertTrue(dfs.rename(tempPath, new Path("/nqdir0")));
      c = dfs.getContentSummary(quotaDir2);
      assertEquals(c.getDirectoryCount(), 2);
      assertEquals(c.getQuota(), 7);
      c = dfs.getContentSummary(quotaDir1);
      assertEquals(c.getDirectoryCount(), 4);
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      assertTrue(dfs.mkdirs(new Path("/nqdir0/nqdir30/nqdir33")));

      // 13: Move /nqdir0/nqdir30 /nqdir0/qdir1/qdir20/qdir30
      hasException = false;
      try {
        assertFalse(dfs.rename(new Path("/nqdir0/nqdir30"), tempPath));
      } catch (NSQuotaExceededException e) {
        hasException = true;
      }
      assertTrue(hasException);
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        hasException = true;
      }
      assertTrue(hasException);

      // 14: Move /nqdir0/qdir1/qdir21 /nqdir0/qdir1/qdir20
      assertTrue(dfs.rename(quotaDir3, quotaDir2));
      c = dfs.getContentSummary(quotaDir1);
      assertEquals(c.getDirectoryCount(), 4);
      assertEquals(c.getQuota(), 6);
      c = dfs.getContentSummary(quotaDir2);
      assertEquals(c.getDirectoryCount(), 3);
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      c = dfs.getContentSummary(quotaDir1);
      assertEquals(c.getDirectoryCount(), 3);
      assertEquals(c.getQuota(), 6);

      // 16: Move /nqdir0/qdir30 /nqdir0/qdir1/qdir20
      assertTrue(dfs.rename(new Path("/nqdir0/nqdir30"), quotaDir2));
      c = dfs.getContentSummary(quotaDir2);
      assertEquals(c.getDirectoryCount(), 5);
      assertEquals(c.getQuota(), 7);
      c = dfs.getContentSummary(quotaDir1);
      assertEquals(c.getDirectoryCount(), 6);
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      assertEquals(c.getSpaceConsumed(), 0);
     
      // Move /nqdir0/qdir1/qdir21/nqdir32 /nqdir0/qdir1/qdir20/nqdir30
      Path dstPath = new Path(quotaDir20, "nqdir30");
      Path srcPath = new Path(quotaDir21, "nqdir32");
      assertTrue(dfs.rename(srcPath, dstPath));
     
      // verify space after the move
      c = dfs.getContentSummary(quotaDir20);
      assertEquals(c.getSpaceConsumed(), fileSpace);
      // verify space for its parent
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      assertEquals(c.getSpaceConsumed(), 0);
     
      // Reverse: Move /nqdir0/qdir1/qdir20/nqdir30 to /nqdir0/qdir1/qdir21/
      hasException = false;
      try {
        assertFalse(dfs.rename(dstPath, srcPath));
      } catch (DSQuotaExceededException e) {
        hasException = true;
      }
      assertTrue(hasException);
     
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