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

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

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

org.apache.hadoop.hdfs.server.namenode.snapshot.FileWithSnapshotFeature
Feature for file with snapshot-related information.

  /* Start of Snapshot Feature */


  public FileWithSnapshotFeature addSnapshotFeature(FileDiffList diffs) {
    Preconditions.checkState(!isWithSnapshot(), 
        "File is already with snapshot");
    FileWithSnapshotFeature sf = new FileWithSnapshotFeature(diffs);
    this.addFeature(sf);
    return sf;
  }

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    return getFileWithSnapshotFeature() != null;
  }
    
  @Override
  public String toDetailString() {
    FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
    return super.toDetailString() + (sf == null ? "" : sf.getDetailedString()); 
  }

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    return super.toDetailString() + (sf == null ? "" : sf.getDetailedString()); 
  }


  @Override
  public INodeFileAttributes getSnapshotINode(final int snapshotId) {
    FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
    if (sf != null) {
      return sf.getDiffs().getSnapshotINode(snapshotId, this);
    } else {
      return this;
    }
  }

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  public INodeFile recordModification(final int latestSnapshotId) 
      throws QuotaExceededException {
    if (isInLatestSnapshot(latestSnapshotId)
        && !shouldRecordInSrcSnapshot(latestSnapshotId)) {
      // the file is in snapshot, create a snapshot feature if it does not have
      FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
      if (sf == null) {
        sf = addSnapshotFeature(null);
      }
      // record self in the diff list if necessary
      sf.getDiffs().saveSelf2Snapshot(latestSnapshotId, this, null);
    }
    return this;
  }

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    }
    return this;
  }
  
  public FileDiffList getDiffs() {
    FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
    if (sf != null) {
      return sf.getDiffs();
    }
    return null;
  }

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  }


  @Override // BlockCollection
  public short getBlockReplication() {
    short max = getFileReplication(CURRENT_STATE_ID);
    FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
    if (sf != null) {
      short maxInSnapshot = sf.getMaxBlockRepInDiffs();
      if (sf.isCurrentFileDeleted()) {
        return maxInSnapshot;
      }
      max = maxInSnapshot > max ? maxInSnapshot : max;
    }
    return max;

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  @Override
  public Quota.Counts cleanSubtree(final int snapshot, int priorSnapshotId,
      final BlocksMapUpdateInfo collectedBlocks,
      final List<INode> removedINodes, final boolean countDiffChange)
      throws QuotaExceededException {
    FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
    if (sf != null) {
      return sf.cleanFile(this, snapshot, priorSnapshotId, collectedBlocks,
          removedINodes, countDiffChange);
    }
    Quota.Counts counts = Quota.Counts.newInstance();
    if (snapshot == CURRENT_STATE_ID) {
      if (priorSnapshotId == NO_SNAPSHOT_ID) {

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    }
    setBlocks(null);
    clear();
    removedINodes.add(this);
    
    FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
    if (sf != null) {
      sf.clearDiffs();
    }
  }

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  @Override
  public final Quota.Counts computeQuotaUsage(Quota.Counts counts,
      boolean useCache, int lastSnapshotId) {
    long nsDelta = 1;
    final long dsDelta;
    FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
    if (sf != null) {
      FileDiffList fileDiffList = sf.getDiffs();
      int last = fileDiffList.getLastSnapshotId();
      List<FileDiff> diffs = fileDiffList.asList();


      if (lastSnapshotId == Snapshot.CURRENT_STATE_ID
          || last == Snapshot.CURRENT_STATE_ID) {

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  }


  private void computeContentSummary4Snapshot(final Content.Counts counts) {
    // file length and diskspace only counted for the latest state of the file
    // i.e. either the current state or the last snapshot
    FileWithSnapshotFeature sf = getFileWithSnapshotFeature();
    if (sf != null) {
      final FileDiffList diffs = sf.getDiffs();
      final int n = diffs.asList().size();
      counts.add(Content.FILE, n);
      if (n > 0 && sf.isCurrentFileDeleted()) {
        counts.add(Content.LENGTH, diffs.getLast().getFileSize());
      }


      if (sf.isCurrentFileDeleted()) {
        final long lastFileSize = diffs.getLast().getFileSize();
        counts.add(Content.DISKSPACE, lastFileSize * getBlockReplication());
      }
    }
  }

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Related Classes of org.apache.hadoop.hdfs.server.namenode.snapshot.FileWithSnapshotFeature

org.apache.hadoop.hdfs.server.namenode.INodeFile

org.apache.hadoop.hdfs.server.namenode.INodeFileAttributes

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