Package org.apache.hadoop.hive.ql.exec.HashTableSinkOperator

Examples of org.apache.hadoop.hive.ql.exec.HashTableSinkOperator.HashTableSinkObjectCtx

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  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    try {
      // out.writeInt(metadataTag);
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      ArrayList<Object> list = MapJoinMetaData.getList();
      list.add(obj);

      // Different processing for key and value
      Writable outVal = ctx.getSerDe().serialize(list, ctx.getStandardOI());
      outVal.write(out);

    } catch (SerDeException e) {
      throw new IOException(e);
    }
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  @Override
  public void readExternal(ObjectInput in) throws IOException,
      ClassNotFoundException {
    try {
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(
          Integer.valueOf(metadataTag));

      Writable val = ctx.getSerDe().getSerializedClass().newInstance();
      val.readFields(in);
      ArrayList<Object> list = (ArrayList<Object>) ObjectInspectorUtils.copyToStandardObject(ctx
          .getSerDe().deserialize(val), ctx.getSerDe().getObjectInspector(),
          ObjectInspectorCopyOption.WRITABLE);
      if(list == null){
        obj = new ArrayList(0).toArray();
      }else{
        obj = list.toArray();
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  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    try {
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(
          Integer.valueOf(metadataTag));

      // Different processing for key and value
      Writable outVal = ctx.getSerDe().serialize(obj, ctx.getStandardOI());
      outVal.write(out);
    } catch (SerDeException e) {
      throw new IOException(e);
    }
  }
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  @Override
  public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
    try {
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      Writable val = ctx.getSerDe().getSerializedClass().newInstance();
      val.readFields(in);



      ArrayList<Object> list = (ArrayList<Object>) ObjectInspectorUtils.copyToStandardObject(ctx
          .getSerDe().deserialize(val), ctx.getSerDe().getObjectInspector(),
          ObjectInspectorCopyOption.WRITABLE);

      if (list == null) {
        obj1 = null;
        obj2 = null;
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  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    try {
      // out.writeInt(metadataTag);
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      ArrayList<Object> list = MapJoinMetaData.getList();
      list.add(obj1);
      list.add(obj2);
      // Different processing for key and value
      Writable outVal = ctx.getSerDe().serialize(list, ctx.getStandardOI());
      outVal.write(out);

    } catch (SerDeException e) {
      throw new IOException(e);
    }
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    try {

      metadataTag = in.readInt();

      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));
      int sz = in.readInt();

      MapJoinRowContainer<Object[]> res = new MapJoinRowContainer<Object[]>();
      if (sz > 0) {
        int numCols = in.readInt();
        if (numCols > 0) {
          for (int pos = 0; pos < sz; pos++) {
            Writable val = ctx.getSerDe().getSerializedClass().newInstance();
            val.readFields(in);

            ArrayList<Object> memObj = (ArrayList<Object>) ObjectInspectorUtils
                .copyToStandardObject(ctx.getSerDe().deserialize(val), ctx.getSerDe()
                    .getObjectInspector(), ObjectInspectorCopyOption.WRITABLE);

            if (memObj == null) {
              res.add(new ArrayList<Object>(0).toArray());
            } else {
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    try {

      out.writeInt(metadataTag);

      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      // Different processing for key and value
      MapJoinRowContainer<Object[]> v = obj;
      out.writeInt(v.size());
      if (v.size() > 0) {
        Object[] row = v.first();
        out.writeInt(row.length);

        if (row.length > 0) {
          for (; row != null; row = v.next()) {
            Writable outVal = ctx.getSerDe().serialize(row, ctx.getStandardOI());
            outVal.write(out);
          }
        }
      }
    } catch (SerDeException e) {
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  @Override
  public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
    try {
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      Writable val = ctx.getSerDe().getSerializedClass().newInstance();
      val.readFields(in);



      ArrayList<Object> list = (ArrayList<Object>) ObjectInspectorUtils.copyToStandardObject(ctx
          .getSerDe().deserialize(val), ctx.getSerDe().getObjectInspector(),
          ObjectInspectorCopyOption.WRITABLE);

      if (list == null) {
        obj = null;
        System.out.println("read empty back");
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  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    try {
      // out.writeInt(metadataTag);
      // get the tableDesc from the map stored in the mapjoin operator
      HashTableSinkObjectCtx ctx = MapJoinMetaData.get(Integer.valueOf(metadataTag));

      ArrayList<Object> list = MapJoinMetaData.getList();
      list.add(obj);

      // Different processing for key and value
      Writable outVal = ctx.getSerDe().serialize(list, ctx.getStandardOI());
      outVal.write(out);

    } catch (SerDeException e) {
      throw new IOException(e);
    }
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    // index for key is -1
    TableDesc keyTableDesc = conf.getKeyTblDesc();
    SerDe keySerializer = (SerDe) ReflectionUtils.newInstance(keyTableDesc.getDeserializerClass(),
        null);
    keySerializer.initialize(null, keyTableDesc.getProperties());
    MapJoinMetaData.put(Integer.valueOf(metadataKeyTag), new HashTableSinkObjectCtx(
        ObjectInspectorUtils.getStandardObjectInspector(keySerializer.getObjectInspector(),
            ObjectInspectorCopyOption.WRITABLE), keySerializer, keyTableDesc, hconf));

    // index for values is just alias
    for (int tag = 0; tag < order.length; tag++) {
      int alias = (int) order[tag];

      if (alias == this.bigTableAlias) {
        continue;
      }


      TableDesc valueTableDesc = conf.getValueTblDescs().get(tag);
      SerDe valueSerDe = (SerDe) ReflectionUtils.newInstance(valueTableDesc.getDeserializerClass(),
          null);
      valueSerDe.initialize(null, valueTableDesc.getProperties());

      MapJoinMetaData.put(Integer.valueOf(alias), new HashTableSinkObjectCtx(ObjectInspectorUtils
          .getStandardObjectInspector(valueSerDe.getObjectInspector(),
              ObjectInspectorCopyOption.WRITABLE), valueSerDe, valueTableDesc, hconf));
    }
  }
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Related Classes of org.apache.hadoop.hive.ql.exec.HashTableSinkOperator.HashTableSinkObjectCtx

  • org.apache.hadoop.hive.ql.exec.MapJoinOperator
  • org.apache.hadoop.hive.ql.exec.persistence.MapJoinDoubleKeys
  • org.apache.hadoop.hive.ql.exec.persistence.MapJoinObjectKey
  • org.apache.hadoop.hive.ql.exec.persistence.MapJoinObjectValue
  • org.apache.hadoop.hive.ql.exec.persistence.MapJoinSingleKey
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