Examples with StructObjectInspector org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector used on opensource projects

Example 66 with StructObjectInspector

use of org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector in project hive by apache.

the class FetchOperator method createPartValue.

private Object[] createPartValue(PartitionDesc partDesc, StructObjectInspector partOI) {
    Map<String, String> partSpec = partDesc.getPartSpec();
    List<? extends StructField> fields = partOI.getAllStructFieldRefs();
    Object[] partValues = new Object[fields.size()];
    for (int i = 0; i < partValues.length; i++) {
        StructField field = fields.get(i);
        String value = partSpec.get(field.getFieldName());
        ObjectInspector oi = field.getFieldObjectInspector();
        partValues[i] = ObjectInspectorConverters.getConverter(PrimitiveObjectInspectorFactory.javaStringObjectInspector, oi).convert(value);
    }
    return partValues;
}

Example 67 with StructObjectInspector

use of org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector in project hive by apache.

the class GroupByOperator method initializeOp.

@Override
protected void initializeOp(Configuration hconf) throws HiveException {
    super.initializeOp(hconf);
    numRowsInput = 0;
    numRowsHashTbl = 0;
    heartbeatInterval = HiveConf.getIntVar(hconf, HiveConf.ConfVars.HIVESENDHEARTBEAT);
    countAfterReport = 0;
    groupingSetsPresent = conf.isGroupingSetsPresent();
    ObjectInspector rowInspector = inputObjInspectors[0];
    // init keyFields
    int numKeys = conf.getKeys().size();
    keyFields = new ExprNodeEvaluator[numKeys];
    keyObjectInspectors = new ObjectInspector[numKeys];
    currentKeyObjectInspectors = new ObjectInspector[numKeys];
    for (int i = 0; i < numKeys; i++) {
        keyFields[i] = ExprNodeEvaluatorFactory.get(conf.getKeys().get(i), hconf);
        keyObjectInspectors[i] = keyFields[i].initialize(rowInspector);
        currentKeyObjectInspectors[i] = ObjectInspectorUtils.getStandardObjectInspector(keyObjectInspectors[i], ObjectInspectorCopyOption.WRITABLE);
    }
    // each row
    if (groupingSetsPresent) {
        groupingSets = conf.getListGroupingSets();
        groupingSetsPosition = conf.getGroupingSetPosition();
        newKeysGroupingSets = new IntWritable[groupingSets.size()];
        groupingSetsBitSet = new FastBitSet[groupingSets.size()];
        int pos = 0;
        for (Integer groupingSet : groupingSets) {
            // Create the mapping corresponding to the grouping set
            newKeysGroupingSets[pos] = new IntWritable(groupingSet);
            groupingSetsBitSet[pos] = groupingSet2BitSet(groupingSet, groupingSetsPosition);
            pos++;
        }
    }
    // initialize unionExpr for reduce-side
    // reduce KEY has union field as the last field if there are distinct
    // aggregates in group-by.
    List<? extends StructField> sfs = ((StructObjectInspector) rowInspector).getAllStructFieldRefs();
    if (sfs.size() > 0) {
        StructField keyField = sfs.get(0);
        if (keyField.getFieldName().toUpperCase().equals(Utilities.ReduceField.KEY.name())) {
            ObjectInspector keyObjInspector = keyField.getFieldObjectInspector();
            if (keyObjInspector instanceof StructObjectInspector) {
                List<? extends StructField> keysfs = ((StructObjectInspector) keyObjInspector).getAllStructFieldRefs();
                if (keysfs.size() > 0) {
                    // the last field is the union field, if any
                    StructField sf = keysfs.get(keysfs.size() - 1);
                    if (sf.getFieldObjectInspector().getCategory().equals(ObjectInspector.Category.UNION)) {
                        unionExprEval = ExprNodeEvaluatorFactory.get(new ExprNodeColumnDesc(TypeInfoUtils.getTypeInfoFromObjectInspector(sf.getFieldObjectInspector()), keyField.getFieldName() + "." + sf.getFieldName(), null, false), hconf);
                        unionExprEval.initialize(rowInspector);
                    }
                }
            }
        }
    }
    // init aggregationParameterFields
    ArrayList<AggregationDesc> aggrs = conf.getAggregators();
    aggregationParameterFields = new ExprNodeEvaluator[aggrs.size()][];
    aggregationParameterObjectInspectors = new ObjectInspector[aggrs.size()][];
    aggregationParameterStandardObjectInspectors = new ObjectInspector[aggrs.size()][];
    aggregationParameterObjects = new Object[aggrs.size()][];
    aggregationIsDistinct = new boolean[aggrs.size()];
    for (int i = 0; i < aggrs.size(); i++) {
        AggregationDesc aggr = aggrs.get(i);
        ArrayList<ExprNodeDesc> parameters = aggr.getParameters();
        aggregationParameterFields[i] = new ExprNodeEvaluator[parameters.size()];
        aggregationParameterObjectInspectors[i] = new ObjectInspector[parameters.size()];
        aggregationParameterStandardObjectInspectors[i] = new ObjectInspector[parameters.size()];
        aggregationParameterObjects[i] = new Object[parameters.size()];
        for (int j = 0; j < parameters.size(); j++) {
            aggregationParameterFields[i][j] = ExprNodeEvaluatorFactory.get(parameters.get(j), hconf);
            aggregationParameterObjectInspectors[i][j] = aggregationParameterFields[i][j].initialize(rowInspector);
            if (unionExprEval != null) {
                String[] names = parameters.get(j).getExprString().split("\\.");
                // parameters of the form : KEY.colx:t.coly
                if (Utilities.ReduceField.KEY.name().equals(names[0]) && names.length > 2) {
                    String name = names[names.length - 2];
                    int tag = Integer.parseInt(name.split("\\:")[1]);
                    if (aggr.getDistinct()) {
                        // is distinct
                        Set<Integer> set = distinctKeyAggrs.get(tag);
                        if (null == set) {
                            set = new HashSet<Integer>();
                            distinctKeyAggrs.put(tag, set);
                        }
                        if (!set.contains(i)) {
                            set.add(i);
                        }
                    } else {
                        Set<Integer> set = nonDistinctKeyAggrs.get(tag);
                        if (null == set) {
                            set = new HashSet<Integer>();
                            nonDistinctKeyAggrs.put(tag, set);
                        }
                        if (!set.contains(i)) {
                            set.add(i);
                        }
                    }
                } else {
                    // will be KEY._COLx or VALUE._COLx
                    if (!nonDistinctAggrs.contains(i)) {
                        nonDistinctAggrs.add(i);
                    }
                }
            } else {
                if (aggr.getDistinct()) {
                    aggregationIsDistinct[i] = true;
                }
            }
            aggregationParameterStandardObjectInspectors[i][j] = ObjectInspectorUtils.getStandardObjectInspector(aggregationParameterObjectInspectors[i][j], ObjectInspectorCopyOption.WRITABLE);
            aggregationParameterObjects[i][j] = null;
        }
        if (parameters.size() == 0) {
            // for ex: count(*)
            if (!nonDistinctAggrs.contains(i)) {
                nonDistinctAggrs.add(i);
            }
        }
    }
    // init aggregationClasses
    aggregationEvaluators = new GenericUDAFEvaluator[conf.getAggregators().size()];
    for (int i = 0; i < aggregationEvaluators.length; i++) {
        AggregationDesc agg = conf.getAggregators().get(i);
        aggregationEvaluators[i] = agg.getGenericUDAFEvaluator();
    }
    MapredContext context = MapredContext.get();
    if (context != null) {
        for (GenericUDAFEvaluator genericUDAFEvaluator : aggregationEvaluators) {
            context.setup(genericUDAFEvaluator);
        }
    }
    // grouping id should be pruned, which is the last of key columns
    // see ColumnPrunerGroupByProc
    outputKeyLength = conf.pruneGroupingSetId() ? keyFields.length - 1 : keyFields.length;
    // init objectInspectors
    ObjectInspector[] objectInspectors = new ObjectInspector[outputKeyLength + aggregationEvaluators.length];
    for (int i = 0; i < outputKeyLength; i++) {
        objectInspectors[i] = currentKeyObjectInspectors[i];
    }
    for (int i = 0; i < aggregationEvaluators.length; i++) {
        objectInspectors[outputKeyLength + i] = aggregationEvaluators[i].init(conf.getAggregators().get(i).getMode(), aggregationParameterObjectInspectors[i]);
    }
    aggregationsParametersLastInvoke = new Object[conf.getAggregators().size()][];
    if ((conf.getMode() != GroupByDesc.Mode.HASH || conf.getBucketGroup()) && (!groupingSetsPresent)) {
        aggregations = newAggregations();
        hashAggr = false;
    } else {
        hashAggregations = new HashMap<KeyWrapper, AggregationBuffer[]>(256);
        aggregations = newAggregations();
        hashAggr = true;
        keyPositionsSize = new ArrayList<Integer>();
        aggrPositions = new List[aggregations.length];
        groupbyMapAggrInterval = HiveConf.getIntVar(hconf, HiveConf.ConfVars.HIVEGROUPBYMAPINTERVAL);
        // compare every groupbyMapAggrInterval rows
        numRowsCompareHashAggr = groupbyMapAggrInterval;
        minReductionHashAggr = HiveConf.getFloatVar(hconf, HiveConf.ConfVars.HIVEMAPAGGRHASHMINREDUCTION);
    }
    List<String> fieldNames = new ArrayList<String>(conf.getOutputColumnNames());
    outputObjInspector = ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, Arrays.asList(objectInspectors));
    KeyWrapperFactory keyWrapperFactory = new KeyWrapperFactory(keyFields, keyObjectInspectors, currentKeyObjectInspectors);
    newKeys = keyWrapperFactory.getKeyWrapper();
    isTez = HiveConf.getVar(hconf, HiveConf.ConfVars.HIVE_EXECUTION_ENGINE).equals("tez");
    isLlap = isTez && HiveConf.getVar(hconf, HiveConf.ConfVars.HIVE_EXECUTION_MODE).equals("llap");
    numExecutors = isLlap ? HiveConf.getIntVar(hconf, HiveConf.ConfVars.LLAP_DAEMON_NUM_EXECUTORS) : 1;
    firstRow = true;
    // is not known, estimate that based on the number of entries
    if (hashAggr) {
        computeMaxEntriesHashAggr();
    }
    memoryMXBean = ManagementFactory.getMemoryMXBean();
    maxMemory = isTez ? getConf().getMaxMemoryAvailable() : memoryMXBean.getHeapMemoryUsage().getMax();
    memoryThreshold = this.getConf().getMemoryThreshold();
    LOG.info("isTez: {} isLlap: {} numExecutors: {} maxMemory: {}", isTez, isLlap, numExecutors, maxMemory);
}

Example 68 with StructObjectInspector

use of org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector in project hive by apache.

the class JoinOperator method process.

@Override
public void process(Object row, int tag) throws HiveException {
    try {
        reportProgress();
        lastAlias = alias;
        alias = (byte) tag;
        if (!alias.equals(lastAlias)) {
            nextSz = joinEmitInterval;
        }
        List<Object> nr = getFilteredValue(alias, row);
        if (handleSkewJoin) {
            skewJoinKeyContext.handleSkew(tag);
        }
        // number of rows for the key in the given table
        long sz = storage[alias].rowCount();
        StructObjectInspector soi = (StructObjectInspector) inputObjInspectors[tag];
        StructField sf = soi.getStructFieldRef(Utilities.ReduceField.KEY.toString());
        List keyObject = (List) soi.getStructFieldData(row, sf);
        // Are we consuming too much memory
        if (alias == numAliases - 1 && !(handleSkewJoin && skewJoinKeyContext.currBigKeyTag >= 0) && !hasLeftSemiJoin) {
            if (sz == joinEmitInterval && !hasFilter(condn[alias - 1].getLeft()) && !hasFilter(condn[alias - 1].getRight())) {
                // The input is sorted by alias, so if we are already in the last join
                // operand,
                // we can emit some results now.
                // Note this has to be done before adding the current row to the
                // storage,
                // to preserve the correctness for outer joins.
                checkAndGenObject();
                storage[alias].clearRows();
            }
        } else {
            if (isLogInfoEnabled && (sz == nextSz)) {
                // Print a message if we reached at least 1000 rows for a join operand
                // We won't print a message for the last join operand since the size
                // will never goes to joinEmitInterval.
                LOG.info("table " + alias + " has " + sz + " rows for join key " + keyObject);
                nextSz = getNextSize(nextSz);
            }
        }
        // Add the value to the vector
        // if join-key is null, process each row in different group.
        StructObjectInspector inspector = (StructObjectInspector) sf.getFieldObjectInspector();
        if (SerDeUtils.hasAnyNullObject(keyObject, inspector, nullsafes)) {
            endGroup();
            startGroup();
        }
        storage[alias].addRow(nr);
    } catch (Exception e) {
        e.printStackTrace();
        throw new HiveException(e);
    }
}

Example 69 with StructObjectInspector

use of org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector in project hive by apache.

the class JoinUtil method unflattenObjInspector.

/**
   * Checks the input object inspector to see if it is in for form of a flattened struct
   * like the ones generated by a vectorized reduce sink input:
   *   { 'key.reducesinkkey0':int, 'value._col0':int, 'value._col1':int, .. }
   * If so, then it creates an "unflattened" struct that contains nested key/value
   * structs:
   *   { key: { reducesinkkey0:int }, value: { _col0:int, _col1:int, .. } }
   *
   * @param oi
   * @return unflattened object inspector if unflattening is needed,
   *         otherwise the original object inspector
   */
private static ObjectInspector unflattenObjInspector(ObjectInspector oi) {
    if (oi instanceof StructObjectInspector) {
        // Check if all fields start with "key." or "value."
        // If so, then unflatten by adding an additional level of nested key and value structs
        // Example: { "key.reducesinkkey0":int, "key.reducesinkkey1": int, "value._col6":int }
        // Becomes
        //   { "key": { "reducesinkkey0":int, "reducesinkkey1":int }, "value": { "_col6":int } }
        ArrayList<StructField> keyFields = new ArrayList<StructField>();
        ArrayList<StructField> valueFields = new ArrayList<StructField>();
        for (StructField field : ((StructObjectInspector) oi).getAllStructFieldRefs()) {
            String fieldNameLower = field.getFieldName().toLowerCase();
            if (fieldNameLower.startsWith(KEY_FIELD_PREFIX)) {
                keyFields.add(field);
            } else if (fieldNameLower.startsWith(VALUE_FIELD_PREFIX)) {
                valueFields.add(field);
            } else {
                // Not a flattened struct, no need to unflatten
                return oi;
            }
        }
        // All field names are of the form "key." or "value."
        // Create key/value structs and add the respective fields to each one
        ArrayList<ObjectInspector> reduceFieldOIs = new ArrayList<ObjectInspector>();
        reduceFieldOIs.add(createStructFromFields(keyFields, Utilities.ReduceField.KEY.toString()));
        reduceFieldOIs.add(createStructFromFields(valueFields, Utilities.ReduceField.VALUE.toString()));
        // Finally create the outer struct to contain the key, value structs
        return ObjectInspectorFactory.getStandardStructObjectInspector(Utilities.reduceFieldNameList, reduceFieldOIs);
    }
    return oi;
}

Example 70 with StructObjectInspector

use of org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector in project hive by apache.

the class LateralViewJoinOperator method initializeOp.

@Override
protected void initializeOp(Configuration hconf) throws HiveException {
    super.initializeOp(hconf);
    ArrayList<ObjectInspector> ois = new ArrayList<ObjectInspector>();
    ArrayList<String> fieldNames = conf.getOutputInternalColNames();
    // The output of the lateral view join will be the columns from the select
    // parent, followed by the column from the UDTF parent
    StructObjectInspector soi = (StructObjectInspector) inputObjInspectors[SELECT_TAG];
    List<? extends StructField> sfs = soi.getAllStructFieldRefs();
    for (StructField sf : sfs) {
        ois.add(sf.getFieldObjectInspector());
    }
    soi = (StructObjectInspector) inputObjInspectors[UDTF_TAG];
    sfs = soi.getAllStructFieldRefs();
    for (StructField sf : sfs) {
        ois.add(sf.getFieldObjectInspector());
    }
    outputObjInspector = ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, ois);
}