Package org.apache.hadoop.hive.hbase.HBaseSerDe

Examples of org.apache.hadoop.hive.hbase.HBaseSerDe.ColumnMapping

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    // The list of families that have been added to the scan
    List<String> addedFamilies = new ArrayList<String>();

    if (!addAll) {
      for (int i : readColIDs) {
        ColumnMapping colMap = columnsMapping.get(i);
        if (colMap.hbaseRowKey) {
          continue;
        }

        if (colMap.qualifierName == null) {
          scan.addFamily(colMap.familyNameBytes);
          addedFamilies.add(colMap.familyName);
        } else {
          if(!addedFamilies.contains(colMap.familyName)){
            // add only if the corresponding family has not already been added
            scan.addColumn(colMap.familyNameBytes, colMap.qualifierNameBytes);
          }
        }

        empty = false;
      }
    }

    // The HBase table's row key maps to a Hive table column. In the corner case when only the
    // row key column is selected in Hive, the HBase Scan will be empty i.e. no column family/
    // column qualifier will have been added to the scan. We arbitrarily add at least one column
    // to the HBase scan so that we can retrieve all of the row keys and return them as the Hive
    // tables column projection.
    if (empty) {
      for (int i = 0; i < columnsMapping.size(); i++) {
        ColumnMapping colMap = columnsMapping.get(i);
        if (colMap.hbaseRowKey) {
          continue;
        }

        if (colMap.qualifierName == null) {
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    List<String> addedFamilies = new ArrayList<String>();

    // REVIEW:  are we supposed to be applying the getReadColumnIDs
    // same as in getRecordReader?
    for (int i = 0; i <columnsMapping.size(); i++) {
      ColumnMapping colMap = columnsMapping.get(i);
      if (colMap.hbaseRowKey) {
        continue;
      }

      if (colMap.qualifierName == null) {
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        }
        // make sure the schema mapping is right
        tableDesc = getHBaseAdmin().getTableDescriptor(Bytes.toBytes(tableName));

        for (int i = 0; i < columnsMapping.size(); i++) {
          ColumnMapping colMap = columnsMapping.get(i);

          if (colMap.hbaseRowKey) {
            continue;
          }
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      List<? extends StructField> fieldRefs =
        ((StructObjectInspector)getInspector()).getAllStructFieldRefs();
      LazyObject<? extends ObjectInspector> [] fields = new LazyObject<?>[fieldRefs.size()];

      for (int i = 0; i < fields.length; i++) {
        ColumnMapping colMap = columnsMapping.get(i);

        if (colMap.qualifierName == null && !colMap.hbaseRowKey) {
          // a column family
          fields[i] = new LazyHBaseCellMap(
              (LazyMapObjectInspector) fieldRefs.get(i).getFieldObjectInspector());
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    LazyObject<?> [] fields = getFields();
    boolean [] fieldsInited = getFieldInited();

    if (!fieldsInited[fieldID]) {
      ByteArrayRef ref = null;
      ColumnMapping colMap = columnsMapping.get(fieldID);

      if (colMap.hbaseRowKey) {
        ref = new ByteArrayRef();
        ref.setData(result.getRow());
      } else {
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        }
        // make sure the schema mapping is right
        tableDesc = getHBaseAdmin().getTableDescriptor(Bytes.toBytes(tableName));

        for (int i = 0; i < columnsMapping.size(); i++) {
          ColumnMapping colMap = columnsMapping.get(i);

          if (colMap.hbaseRowKey) {
            continue;
          }
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      List<? extends StructField> fieldRefs =
        ((StructObjectInspector)getInspector()).getAllStructFieldRefs();
      LazyObject<? extends ObjectInspector> [] fields = new LazyObject<?>[fieldRefs.size()];

      for (int i = 0; i < fields.length; i++) {
        ColumnMapping colMap = columnsMapping.get(i);

        if (colMap.qualifierName == null && !colMap.hbaseRowKey) {
          // a column family
          fields[i] = new LazyHBaseCellMap(
              (LazyMapObjectInspector) fieldRefs.get(i).getFieldObjectInspector());
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    boolean [] fieldsInited = getFieldInited();

    if (!fieldsInited[fieldID]) {
      fieldsInited[fieldID] = true;
      ByteArrayRef ref = null;
      ColumnMapping colMap = columnsMapping.get(fieldID);

      if (colMap.hbaseRowKey) {
        ref = new ByteArrayRef();
        ref.setData(result.getRow());
      } else {
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    Scan scan = new Scan();
    boolean empty = true;

    if (!addAll) {
      for (int i : readColIDs) {
        ColumnMapping colMap = columnsMapping.get(i);
        if (colMap.hbaseRowKey) {
          continue;
        }

        if (colMap.qualifierName == null) {
          scan.addFamily(colMap.familyNameBytes);
        } else {
          scan.addColumn(colMap.familyNameBytes, colMap.qualifierNameBytes);
        }

        empty = false;
      }
    }

    // The HBase table's row key maps to a Hive table column. In the corner case when only the
    // row key column is selected in Hive, the HBase Scan will be empty i.e. no column family/
    // column qualifier will have been added to the scan. We arbitrarily add at least one column
    // to the HBase scan so that we can retrieve all of the row keys and return them as the Hive
    // tables column projection.
    if (empty) {
      for (int i = 0; i < columnsMapping.size(); i++) {
        ColumnMapping colMap = columnsMapping.get(i);
        if (colMap.hbaseRowKey) {
          continue;
        }

        if (colMap.qualifierName == null) {
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    Scan scan = new Scan();

    // REVIEW:  are we supposed to be applying the getReadColumnIDs
    // same as in getRecordReader?
    for (int i = 0; i <columnsMapping.size(); i++) {
      ColumnMapping colMap = columnsMapping.get(i);
      if (colMap.hbaseRowKey) {
        continue;
      }

      if (colMap.qualifierName == null) {
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Related Classes of org.apache.hadoop.hive.hbase.HBaseSerDe.ColumnMapping

  • org.apache.hadoop.hive.hbase.HBaseStorageHandler
  • org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat
  • org.apache.hadoop.hive.hbase.LazyHBaseRow
  • org.apache.hadoop.hive.hbase.TestLazyHBaseObject
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