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

Examples of org.apache.hadoop.hdfs.server.namenode.snapshot.DirectoryWithSnapshotFeature

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  }

  @Override
  public void destroyAndCollectBlocks(final BlocksMapUpdateInfo collectedBlocks,
      final List<INode> removedINodes) {
    final DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
    if (sf != null) {
      sf.clear(this, collectedBlocks, removedINodes);
    }
    for (INode child : getChildrenList(Snapshot.CURRENT_STATE_ID)) {
      child.destroyAndCollectBlocks(collectedBlocks, removedINodes);
    }
    clear();
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  @Override
  public Quota.Counts cleanSubtree(final int snapshotId, int priorSnapshotId,
      final BlocksMapUpdateInfo collectedBlocks,
      final List<INode> removedINodes, final boolean countDiffChange)
      throws QuotaExceededException {
    DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
    // there is snapshot data
    if (sf != null) {
      return sf.cleanDirectory(this, snapshotId, priorSnapshotId,
          collectedBlocks, removedINodes, countDiffChange);
    }
    // there is no snapshot data
    if (priorSnapshotId == Snapshot.NO_SNAPSHOT_ID
        && snapshotId == Snapshot.CURRENT_STATE_ID) {
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      final ReadOnlyList<INode> children = current
          .getChildrenList(Snapshot.CURRENT_STATE_ID);
      int dirNum = 0;
      List<INodeDirectory> snapshotDirs = null;
      DirectoryWithSnapshotFeature sf = current.getDirectoryWithSnapshotFeature();
      if (sf != null) {
        snapshotDirs = new ArrayList<INodeDirectory>();
        sf.getSnapshotDirectory(snapshotDirs);
        dirNum += snapshotDirs.size();
      }

      // 2. Write INodeDirectorySnapshottable#snapshotsByNames to record all
      // Snapshots
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          int latest = existing.getLatestSnapshotId();
          if (latest == Snapshot.CURRENT_STATE_ID || // no snapshot in dst tree of rename
              (dstSnapshotId != Snapshot.CURRENT_STATE_ID &&
                dstSnapshotId >= latest)) { // the above scenario
            int lastSnapshot = Snapshot.CURRENT_STATE_ID;
            DirectoryWithSnapshotFeature sf = null;
            if (curNode.isDirectory() &&
                (sf = curNode.asDirectory().getDirectoryWithSnapshotFeature()) != null) {
              lastSnapshot = sf.getLastSnapshotId();
            }
            existing.setSnapshotId(lastSnapshot);
          }
        }
      }
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    if (wn != null) {
      INode referred = wc.getReferredINode();
      if (referred.isFile() && referred.asFile().isWithSnapshot()) {
        return referred.asFile().getDiffs().getPrior(wn.lastSnapshotId);
      } else if (referred.isDirectory()) {
        DirectoryWithSnapshotFeature sf = referred.asDirectory()
            .getDirectoryWithSnapshotFeature();
        if (sf != null) {
          return sf.getDiffs().getPrior(wn.lastSnapshotId);
        }
      }
    }
    return Snapshot.NO_SNAPSHOT_ID;
  }
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      INode referred = getReferredINode().asReference().getReferredINode();
      int snapshot = Snapshot.NO_SNAPSHOT_ID;
      if (referred.isFile() && referred.asFile().isWithSnapshot()) {
        snapshot = referred.asFile().getDiffs().getPrior(lastSnapshotId);
      } else if (referred.isDirectory()) {
        DirectoryWithSnapshotFeature sf = referred.asDirectory()
            .getDirectoryWithSnapshotFeature();
        if (sf != null) {
          snapshot = sf.getDiffs().getPrior(lastSnapshotId);
        }
      }
      return snapshot;
    }
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      INode referred = wc.getReferredINode();
      int lastSnapshot = Snapshot.CURRENT_STATE_ID;
      if (referred.isFile() && referred.asFile().isWithSnapshot()) {
        lastSnapshot = referred.asFile().getDiffs().getLastSnapshotId();
      } else if (referred.isDirectory()) {
        DirectoryWithSnapshotFeature sf = referred.asDirectory()
            .getDirectoryWithSnapshotFeature();
        if (sf != null) {
          lastSnapshot = sf.getLastSnapshotId();
        }
      }
      if (lastSnapshot != Snapshot.CURRENT_STATE_ID && lastSnapshot != prior) {
        return lastSnapshot;
      } else {
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  public DirectoryWithSnapshotFeature addSnapshotFeature(
      DirectoryDiffList diffs) {
    Preconditions.checkState(!isWithSnapshot(),
        "Directory is already with snapshot");
    DirectoryWithSnapshotFeature sf = new DirectoryWithSnapshotFeature(diffs);
    addFeature(sf);
    return sf;
  }
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  public final boolean isWithSnapshot() {
    return getDirectoryWithSnapshotFeature() != null;
  }
 
  public DirectoryDiffList getDiffs() {
    DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
    return sf != null ? sf.getDiffs() : null;
  }
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    return sf != null ? sf.getDiffs() : null;
  }
 
  @Override
  public INodeDirectoryAttributes getSnapshotINode(int snapshotId) {
    DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
    return sf == null ? this : sf.getDiffs().getSnapshotINode(snapshotId, this);
  }
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Related Classes of org.apache.hadoop.hdfs.server.namenode.snapshot.DirectoryWithSnapshotFeature

  • org.apache.hadoop.hdfs.protocol.SnapshotDiffReport.DiffReportEntry
  • org.apache.hadoop.hdfs.server.namenode.ContentSummaryComputationContext
  • org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Saver
  • org.apache.hadoop.hdfs.server.namenode.INode
  • org.apache.hadoop.hdfs.server.namenode.INodeDirectory
  • org.apache.hadoop.hdfs.server.namenode.INodeDirectoryAttributes
  • org.apache.hadoop.hdfs.server.namenode.INodeFile
  • org.apache.hadoop.hdfs.server.namenode.INodeReference
  • org.apache.hadoop.hdfs.server.namenode.INodeReference$DstReference
  • org.apache.hadoop.hdfs.server.namenode.INodeReference$WithName
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