Package org.apache.accumulo.core.data

Examples of org.apache.accumulo.core.data.Key

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  @Override
  public void seek(Range range, Collection<ByteSequence> columnFamilies, boolean inclusive) throws IOException {
    topKey = null;
    topValue = null;
   
    Key sk = range.getStartKey();
   
    if (sk != null && sk.getColumnFamilyData().length() == 0 && sk.getColumnQualifierData().length() == 0 && sk.getColumnVisibilityData().length() == 0
        && sk.getTimestamp() == Long.MAX_VALUE && !range.isStartKeyInclusive()) {
      // assuming that we are seeking using a key previously returned by this iterator
      // therefore go to the next row
      Key followingRowKey = sk.followingKey(PartialKey.ROW);
      if (range.getEndKey() != null && followingRowKey.compareTo(range.getEndKey()) > 0)
        return;
     
      range = new Range(sk.followingKey(PartialKey.ROW), true, range.getEndKey(), range.isEndKeyInclusive());
    }
   
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  @Override
  public Entry<Key,Value> next() {
    try {
      byte[] v = iter.getTopValue().get();
      // copy just like tablet server does, do this before calling next
      KeyValue ret = new KeyValue(new Key(iter.getTopKey()), Arrays.copyOf(v, v.length));
     
      iter.next();
     
      while (iter != null && !iter.hasTop())
        nextTablet();
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      if (currentExtent.getEndRow() == null) {
        iter = null;
        return;
      }
     
      if (range.afterEndKey(new Key(currentExtent.getEndRow()).followingKey(PartialKey.ROW))) {
        iter = null;
        return;
      }
     
      nextRange = new Range(currentExtent.getMetadataEntry(), false, null, false);
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    KeyExtent extent = null;
    String location = null;
   
    while (row.hasNext()) {
      Entry<Key,Value> entry = row.next();
      Key key = entry.getKey();
     
      if (key.getColumnFamily().equals(Constants.METADATA_DATAFILE_COLUMN_FAMILY)) {
        relFiles.add(key.getColumnQualifier().toString());
      }
     
      if (key.getColumnFamily().equals(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY)
          || key.getColumnFamily().equals(Constants.METADATA_FUTURE_LOCATION_COLUMN_FAMILY)) {
        location = entry.getValue().toString();
      }
     
      if (Constants.METADATA_PREV_ROW_COLUMN.hasColumns(key)) {
        extent = new KeyExtent(key.getRow(), entry.getValue());
      }
     
    }
    return new Pair<KeyExtent,String>(extent, location);
  }
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    unscanned.keySet().removeAll(fullScans);
   
    // remove partial scan from unscanned
    if (scanResult.partScan != null) {
      KeyExtent ke = new KeyExtent(scanResult.partScan);
      Key nextKey = new Key(scanResult.partNextKey);
     
      ListIterator<Range> iterator = unscanned.get(ke).listIterator();
      while (iterator.hasNext()) {
        Range range = iterator.next();
       
        if (range.afterEndKey(nextKey) || (nextKey.equals(range.getEndKey()) && scanResult.partNextKeyInclusive != range.isEndKeyInclusive())) {
          iterator.remove();
        } else if (range.contains(nextKey)) {
          iterator.remove();
          Range partRange = new Range(nextKey, scanResult.partNextKeyInclusive, range.getEndKey(), range.isEndKeyInclusive());
          iterator.add(partRange);
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        opTimer.stop("Got 1st multi scan results, #results=" + scanResult.results.size() + (scanResult.more ? "  scanID=" + imsr.scanID : "")
            + " in %DURATION%");
       
        ArrayList<Entry<Key,Value>> entries = new ArrayList<Map.Entry<Key,Value>>(scanResult.results.size());
        for (TKeyValue kv : scanResult.results) {
          entries.add(new MyEntry(new Key(kv.key), new Value(kv.value)));
        }
       
        if (entries.size() > 0)
          receiver.receive(entries);
       
        if (entries.size() > 0 || scanResult.fullScans.size() > 0)
          timeoutTracker.madeProgress();
       
        trackScanning(failures, unscanned, scanResult);
       
        while (scanResult.more) {
         
          timeoutTracker.check();
         
          opTimer.start("Continuing multi scan, scanid=" + imsr.scanID);
          scanResult = client.continueMultiScan(Tracer.traceInfo(), imsr.scanID);
          opTimer.stop("Got more multi scan results, #results=" + scanResult.results.size() + (scanResult.more ? "  scanID=" + imsr.scanID : "")
              + " in %DURATION%");
         
          entries = new ArrayList<Map.Entry<Key,Value>>(scanResult.results.size());
          for (TKeyValue kv : scanResult.results) {
            entries.add(new MyEntry(new Key(kv.key), new Value(kv.value)));
          }
         
          if (entries.size() > 0)
            receiver.receive(entries);
         
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    ArrayList<BlockIndexEntry> index = new ArrayList<BlockIndexEntry>(indexEntries - 1);

    while (count < (indexEntry.getNumEntries() - interval + 1)) {

      Key myPrevKey = rk.getKey();
      int pos = cacheBlock.getPosition();
      rk.readFields(cacheBlock);
      val.readFields(cacheBlock);

      if (count > 0 && count % interval == 0) {
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      org.apache.accumulo.core.file.rfile.bcfile.PrintInfo.main(new String[] {arg});
     
      if (opts.histogram || opts.dump) {
        iter.seek(new Range((Key) null, (Key) null), new ArrayList<ByteSequence>(), false);
        while (iter.hasTop()) {
          Key key = iter.getTopKey();
          Value value = iter.getTopValue();
          if (opts.dump)
            System.out.println(key + " -> " + value);
          if (opts.histogram) {
            long size = key.getSize() + value.getSize();
            int bucket = (int) Math.log10(size);
            countBuckets[bucket]++;
            sizeBuckets[bucket] += size;
            totalSize += size;
          }
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    while (source.hasTop() && source.getTopKey().getRowData().equals(row)) {
      source.next();
      count++;
      if (count >= 10) {
        Key nextRowStart = new Key(new Text(row.toArray())).followingKey(PartialKey.ROW);
        reseek(nextRowStart);
        count = 0;
      }
    }
  }
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  private void addKeyValue(Key k, Value v) {
    if (dropEmptyColFams && k.getColumnFamilyData().equals(EMPTY)) {
      return;
    }
    keys.add(new Key(k));
    values.add(new Value(v));
  }
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Related Classes of org.apache.accumulo.core.data.Key

  • org.apache.accumulo.core.client.impl.OfflineIterator
  • org.apache.accumulo.core.client.impl.TabletLocatorImplTest
  • org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator
  • org.apache.accumulo.core.client.impl.ThriftScanner
  • org.apache.accumulo.core.client.mapred.RangeInputSplitTest
  • org.apache.accumulo.core.client.mapreduce.AccumuloInputFormatTest$TestMapper
  • org.apache.accumulo.core.client.mapreduce.InputFormatBase
  • org.apache.accumulo.core.client.mapreduce.RangeInputSplitTest
  • org.apache.accumulo.core.client.mock.MockConnectorTest
  • org.apache.accumulo.core.client.mock.MockTable
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