Examples of SnapshotDiffReport

org.apache.hadoop.hdfs.protocol.SnapshotDiffReport
This class represents to end users the difference between two snapshots of the same directory, or the difference between a snapshot of the directory and its current state. Instead of capturing all the details of the diff, this class only lists where the changes happened and their types.

Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

  }
  
  /** check the correctness of the diff reports */
  private void verifyDiffReport(Path dir, String from, String to,
      DiffReportEntry... entries) throws IOException {
    SnapshotDiffReport report = hdfs.getSnapshotDiffReport(dir, from, to);
    // reverse the order of from and to
    SnapshotDiffReport inverseReport = hdfs
        .getSnapshotDiffReport(dir, to, from);
    System.out.println(report.toString());
    System.out.println(inverseReport.toString() + "\n");
    
    assertEquals(entries.length, report.getDiffList().size());
    assertEquals(entries.length, inverseReport.getDiffList().size());
    
    for (DiffReportEntry entry : entries) {
      if (entry.getType() == DiffType.MODIFY) {
        assertTrue(report.getDiffList().contains(entry));
        assertTrue(inverseReport.getDiffList().contains(entry));
      } else if (entry.getType() == DiffType.DELETE) {
        assertTrue(report.getDiffList().contains(entry));
        assertTrue(inverseReport.getDiffList().contains(
            new DiffReportEntry(DiffType.CREATE, entry.getSourcePath())));
      } else if (entry.getType() == DiffType.CREATE) {
        assertTrue(report.getDiffList().contains(entry));
        assertTrue(inverseReport.getDiffList().contains(
            new DiffReportEntry(DiffType.DELETE, entry.getSourcePath())));
      }
    }
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

          "Cannot find the snapshot of directory " + sub1 + " with name "
              + invalidName, e);
    }
    
    // diff between the same snapshot
    SnapshotDiffReport report = hdfs.getSnapshotDiffReport(sub1, "s0", "s0");
    System.out.println(report);
    assertEquals(0, report.getDiffList().size());
    
    report = hdfs.getSnapshotDiffReport(sub1, "", "");
    System.out.println(report);
    assertEquals(0, report.getDiffList().size());
    
    report = hdfs.getSnapshotDiffReport(subsubsub1, "s0", "s2");
    System.out.println(report);
    assertEquals(0, report.getDiffList().size());


    // test path with scheme also works
    report = hdfs.getSnapshotDiffReport(hdfs.makeQualified(subsubsub1), "s0", "s2");
    System.out.println(report);
    assertEquals(0, report.getDiffList().size());


    verifyDiffReport(sub1, "s0", "s2", 
        new DiffReportEntry(DiffType.MODIFY, DFSUtil.string2Bytes("")),
        new DiffReportEntry(DiffType.CREATE, DFSUtil.string2Bytes("file15")),
        new DiffReportEntry(DiffType.DELETE, DFSUtil.string2Bytes("file12")),

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

  public SnapshotDiffReport diff(final String path, final String from,
      final String to) throws IOException {
    if ((from == null || from.isEmpty())
        && (to == null || to.isEmpty())) {
      // both fromSnapshot and toSnapshot indicate the current tree
      return new SnapshotDiffReport(path, from, to,
          Collections.<DiffReportEntry> emptyList());
    }


    // Find the source root directory path where the snapshots were taken.
    // All the check for path has been included in the valueOf method.
    INodesInPath inodesInPath = fsdir.getINodesInPath4Write(path.toString());
    final INodeDirectorySnapshottable snapshotRoot = INodeDirectorySnapshottable
        .valueOf(inodesInPath.getLastINode(), path);


    final SnapshotDiffInfo diffs = snapshotRoot.computeDiff(from, to);
    return diffs != null ? diffs.generateReport() : new SnapshotDiffReport(
        path, from, to, Collections.<DiffReportEntry> emptyList());
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

        List<DiffReportEntry> subList = generateReport(dirDiffMap.get(node),
            diffMap.get(node), isFromEarlier(), renameMap);
        diffReportList.addAll(subList);
      }
    }
    return new SnapshotDiffReport(snapshotRoot.getFullPathName(),
        Snapshot.getSnapshotName(from), Snapshot.getSnapshotName(to),
        diffReportList);
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

  @Override
  public GetSnapshotDiffReportResponseProto getSnapshotDiffReport(
      RpcController controller, GetSnapshotDiffReportRequestProto request)
      throws ServiceException {
    try {
      SnapshotDiffReport report = server.getSnapshotDiffReport(
          request.getSnapshotRoot(), request.getFromSnapshot(),
          request.getToSnapshot());
      return GetSnapshotDiffReportResponseProto.newBuilder()
          .setDiffReport(PBHelper.convert(report)).build();
    } catch (IOException e) {

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

    for (SnapshotDiffReportEntryProto entryProto : list) {
      DiffReportEntry entry = convert(entryProto);
      if (entry != null)
        entries.add(entry);
    }
    return new SnapshotDiffReport(snapshotDir, fromSnapshot, toSnapshot,
        entries);
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

  }


  @Override
  public SnapshotDiffReport getSnapshotDiffReport(String snapshotRoot,
      String earlierSnapshotName, String laterSnapshotName) throws IOException {
    SnapshotDiffReport report = namesystem.getSnapshotDiffReport(snapshotRoot,
        earlierSnapshotName, laterSnapshotName);
    metrics.incrSnapshotDiffReportOps();
    return report;
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

    }
    
    if (auditLog.isInfoEnabled() && isExternalInvocation()) {
      logAuditEvent(true, "computeSnapshotDiff", null, null, null);
    }
    return diffs != null ? diffs.generateReport() : new SnapshotDiffReport(
        path, fromSnapshot, toSnapshot,
        Collections.<DiffReportEntry> emptyList());
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

    for (SnapshotDiffReportEntryProto entryProto : list) {
      DiffReportEntry entry = convert(entryProto);
      if (entry != null)
        entries.add(entry);
    }
    return new SnapshotDiffReport(snapshotDir, fromSnapshot, toSnapshot,
        entries);
  }

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Examples of org.apache.hadoop.hdfs.protocol.SnapshotDiffReport

    for (SnapshotDiffReportEntryProto entryProto : list) {
      DiffReportEntry entry = convert(entryProto);
      if (entry != null)
        entries.add(entry);
    }
    return new SnapshotDiffReport(snapshotDir, fromSnapshot, toSnapshot,
        entries);
  }

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