Package org.apache.hadoop.mapred.MemoryBlock

Examples of org.apache.hadoop.mapred.MemoryBlock.KeyValuePairIterator

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      if (totalRecordsNum == 0 || size() == 0) {
        return null;
      }

      if (!first) {
        KeyValuePairIterator top = top();
        if (top.hasNext()) {
          top.next();
          adjustTop();
        } else {
          MemoryBlock freeMemBlk = pop().getMemoryBlock();
          putMemoryBlockFree(freeMemBlk);
          if (size() == 0) {
            return null;
          }
        }
      } else {
        first = false;
      }

      KeyValuePairIterator top = top();
      MemoryBlock memBlock = top.getMemoryBlock();
      memoryBlockIndex.setMemoryBlockIndex(memBlock, top
          .getCurrentReadPos());
      return memoryBlockIndex;
    }
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      return memoryBlockIndex;
    }

    @Override
    protected boolean lessThan(final Object a, final Object b) {
      KeyValuePairIterator kv1 = (KeyValuePairIterator) a;
      KeyValuePairIterator kv2 = (KeyValuePairIterator) b;
      int cmpRet =
          LexicographicalComparerHolder.compareBytes(kvbuffer, kv1
              .getCurrentOffset(), kv1.getCurrentKeyLen(), kv2
              .getCurrentOffset(), kv2.getCurrentKeyLen());
      return cmpRet < 0;
    }
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      if (totalRecordsNum == 0 || size() == 0) {
        return null;
      }

      if (!first) {
        KeyValuePairIterator top = top();
        if (top.hasNext()) {
          top.next();
          adjustTop();
        } else {
          MemoryBlock freeMemBlk = pop().getMemoryBlock();
          putMemoryBlockFree(freeMemBlk);
          if (size() == 0) {
            return null;
          }
        }
      } else {
        first = false;
      }

      KeyValuePairIterator top = top();
      MemoryBlock memBlock = top.getMemoryBlock();
      memoryBlockIndex.setMemoryBlockIndex(memBlock, top
          .getCurrentReadPos());
      return memoryBlockIndex;
    }
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      return memoryBlockIndex;
    }

    @Override
    protected boolean lessThan(final Object a, final Object b) {
      KeyValuePairIterator kv1 = (KeyValuePairIterator) a;
      KeyValuePairIterator kv2 = (KeyValuePairIterator) b;
      int cmpRet =
          LexicographicalComparerHolder.compareBytes(kvbuffer, kv1
              .getCurrentOffset(), kv1.getCurrentKeyLen(), kv2
              .getCurrentOffset(), kv2.getCurrentKeyLen());
      return cmpRet < 0;
    }
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Related Classes of org.apache.hadoop.mapred.MemoryBlock.KeyValuePairIterator

  • org.apache.hadoop.mapred.ReducePartition$KeyValueSortedArray
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