Examples with SingleTableProvider org.apache.carbondata.core.scan.filter.SingleTableProvider used on opensource projects

Example 1 with SingleTableProvider

use of org.apache.carbondata.core.scan.filter.SingleTableProvider in project carbondata by apache.

the class AbstractQueryExecutor method initQuery.

/**
 * Below method will be used to fill the executor properties based on query
 * model it will parse the query model and get the detail and fill it in
 * query properties
 *
 * @param queryModel
 */
protected void initQuery(QueryModel queryModel) throws IOException {
    StandardLogService.setThreadName(StandardLogService.getPartitionID(queryModel.getAbsoluteTableIdentifier().getCarbonTableIdentifier().getTableName()), queryModel.getQueryId());
    LOGGER.info("Query will be executed on table: " + queryModel.getAbsoluteTableIdentifier().getCarbonTableIdentifier().getTableName());
    // add executor service for query execution
    queryProperties.executorService = Executors.newCachedThreadPool();
    // Initializing statistics list to record the query statistics
    // creating copy on write to handle concurrent scenario
    queryProperties.queryStatisticsRecorder = CarbonTimeStatisticsFactory.createExecutorRecorder(queryModel.getQueryId());
    queryModel.setStatisticsRecorder(queryProperties.queryStatisticsRecorder);
    QueryStatistic queryStatistic = new QueryStatistic();
    // sort the block info
    // so block will be loaded in sorted order this will be required for
    // query execution
    Collections.sort(queryModel.getTableBlockInfos());
    if (queryModel.getTableBlockInfos().get(0).getDetailInfo() != null) {
        List<AbstractIndex> indexList = new ArrayList<>();
        Map<String, List<TableBlockInfo>> listMap = new LinkedHashMap<>();
        for (TableBlockInfo blockInfo : queryModel.getTableBlockInfos()) {
            List<TableBlockInfo> tableBlockInfos = listMap.get(blockInfo.getFilePath());
            if (tableBlockInfos == null) {
                tableBlockInfos = new ArrayList<>();
                listMap.put(blockInfo.getFilePath(), tableBlockInfos);
            }
            BlockletDetailInfo blockletDetailInfo = blockInfo.getDetailInfo();
            // the blocklet information from block file
            if (blockletDetailInfo.getBlockletInfo() == null) {
                readAndFillBlockletInfo(blockInfo, tableBlockInfos, blockletDetailInfo);
            } else {
                tableBlockInfos.add(blockInfo);
            }
        }
        for (List<TableBlockInfo> tableBlockInfos : listMap.values()) {
            indexList.add(new IndexWrapper(tableBlockInfos));
        }
        queryProperties.dataBlocks = indexList;
    } else {
        // get the table blocks
        CacheProvider cacheProvider = CacheProvider.getInstance();
        BlockIndexStore<TableBlockUniqueIdentifier, AbstractIndex> cache = (BlockIndexStore) cacheProvider.createCache(CacheType.EXECUTOR_BTREE);
        // remove the invalid table blocks, block which is deleted or compacted
        cache.removeTableBlocks(queryModel.getInvalidSegmentIds(), queryModel.getAbsoluteTableIdentifier());
        List<TableBlockUniqueIdentifier> tableBlockUniqueIdentifiers = prepareTableBlockUniqueIdentifier(queryModel.getTableBlockInfos(), queryModel.getAbsoluteTableIdentifier());
        cache.removeTableBlocksIfHorizontalCompactionDone(queryModel);
        queryProperties.dataBlocks = cache.getAll(tableBlockUniqueIdentifiers);
    }
    queryStatistic.addStatistics(QueryStatisticsConstants.LOAD_BLOCKS_EXECUTOR, System.currentTimeMillis());
    queryProperties.queryStatisticsRecorder.recordStatistics(queryStatistic);
    // calculating the total number of aggeragted columns
    int measureCount = queryModel.getProjectionMeasures().size();
    int currentIndex = 0;
    DataType[] dataTypes = new DataType[measureCount];
    for (ProjectionMeasure carbonMeasure : queryModel.getProjectionMeasures()) {
        // adding the data type and aggregation type of all the measure this
        // can be used
        // to select the aggregator
        dataTypes[currentIndex] = carbonMeasure.getMeasure().getDataType();
        currentIndex++;
    }
    queryProperties.measureDataTypes = dataTypes;
    // as aggregation will be executed in following order
    // 1.aggregate dimension expression
    // 2. expression
    // 3. query measure
    // so calculating the index of the expression start index
    // and measure column start index
    queryProperties.filterMeasures = new HashSet<>();
    queryProperties.complexFilterDimension = new HashSet<>();
    QueryUtil.getAllFilterDimensions(queryModel.getFilterExpressionResolverTree(), queryProperties.complexFilterDimension, queryProperties.filterMeasures);
    CarbonTable carbonTable = queryModel.getTable();
    TableProvider tableProvider = new SingleTableProvider(carbonTable);
    queryStatistic = new QueryStatistic();
    // dictionary column unique column id to dictionary mapping
    // which will be used to get column actual data
    queryProperties.columnToDictionaryMapping = QueryUtil.getDimensionDictionaryDetail(queryModel.getProjectionDimensions(), queryProperties.complexFilterDimension, queryModel.getAbsoluteTableIdentifier(), tableProvider);
    queryStatistic.addStatistics(QueryStatisticsConstants.LOAD_DICTIONARY, System.currentTimeMillis());
    queryProperties.queryStatisticsRecorder.recordStatistics(queryStatistic);
    queryModel.setColumnToDictionaryMapping(queryProperties.columnToDictionaryMapping);
}

Example 2 with SingleTableProvider

use of org.apache.carbondata.core.scan.filter.SingleTableProvider in project carbondata by apache.

the class CarbonFileInputFormat method getSplits.

/**
 * {@inheritDoc}
 * Configurations FileInputFormat.INPUT_DIR
 * are used to get table path to read.
 *
 * @param job
 * @return List<InputSplit> list of CarbonInputSplit
 * @throws IOException
 */
@Override
public List<InputSplit> getSplits(JobContext job) throws IOException {
    AbsoluteTableIdentifier identifier = getAbsoluteTableIdentifier(job.getConfiguration());
    CarbonTable carbonTable = getOrCreateCarbonTable(job.getConfiguration());
    if (null == carbonTable) {
        throw new IOException("Missing/Corrupt schema file for table.");
    }
    if (getValidateSegmentsToAccess(job.getConfiguration())) {
        // get all valid segments and set them into the configuration
        // check for externalTable segment (Segment_null)
        // process and resolve the expression
        Expression filter = getFilterPredicates(job.getConfiguration());
        TableProvider tableProvider = new SingleTableProvider(carbonTable);
        // this will be null in case of corrupt schema file.
        PartitionInfo partitionInfo = carbonTable.getPartitionInfo(carbonTable.getTableName());
        carbonTable.processFilterExpression(filter, null, null);
        FilterResolverIntf filterInterface = carbonTable.resolveFilter(filter, tableProvider);
        String segmentDir = CarbonTablePath.getSegmentPath(identifier.getTablePath(), "null");
        FileFactory.FileType fileType = FileFactory.getFileType(segmentDir);
        if (FileFactory.isFileExist(segmentDir, fileType)) {
            // if external table Segments are found, add it to the List
            List<Segment> externalTableSegments = new ArrayList<Segment>();
            Segment seg = new Segment("null", null);
            externalTableSegments.add(seg);
            Map<String, String> indexFiles = new SegmentIndexFileStore().getIndexFilesFromSegment(segmentDir);
            if (indexFiles.size() == 0) {
                throw new RuntimeException("Index file not present to read the carbondata file");
            }
            // do block filtering and get split
            List<InputSplit> splits = getSplits(job, filterInterface, externalTableSegments, null, partitionInfo, null);
            return splits;
        }
    }
    return null;
}

Example 3 with SingleTableProvider

use of org.apache.carbondata.core.scan.filter.SingleTableProvider in project carbondata by apache.

the class CarbonInputFormat method createQueryModel.

public QueryModel createQueryModel(InputSplit inputSplit, TaskAttemptContext taskAttemptContext) throws IOException {
    Configuration configuration = taskAttemptContext.getConfiguration();
    CarbonTable carbonTable = getOrCreateCarbonTable(configuration);
    TableProvider tableProvider = new SingleTableProvider(carbonTable);
    // query plan includes projection column
    String projectionString = getColumnProjection(configuration);
    String[] projectionColumnNames = null;
    if (projectionString != null) {
        projectionColumnNames = projectionString.split(",");
    }
    QueryModel queryModel = carbonTable.createQueryWithProjection(projectionColumnNames, getDataTypeConverter(configuration));
    // set the filter to the query model in order to filter blocklet before scan
    Expression filter = getFilterPredicates(configuration);
    boolean[] isFilterDimensions = new boolean[carbonTable.getDimensionOrdinalMax()];
    // getAllMeasures returns list of visible and invisible columns
    boolean[] isFilterMeasures = new boolean[carbonTable.getAllMeasures().size()];
    carbonTable.processFilterExpression(filter, isFilterDimensions, isFilterMeasures);
    queryModel.setIsFilterDimensions(isFilterDimensions);
    queryModel.setIsFilterMeasures(isFilterMeasures);
    FilterResolverIntf filterIntf = carbonTable.resolveFilter(filter, tableProvider);
    queryModel.setFilterExpressionResolverTree(filterIntf);
    // update the file level index store if there are invalid segment
    if (inputSplit instanceof CarbonMultiBlockSplit) {
        CarbonMultiBlockSplit split = (CarbonMultiBlockSplit) inputSplit;
        List<String> invalidSegments = split.getAllSplits().get(0).getInvalidSegments();
        if (invalidSegments.size() > 0) {
            queryModel.setInvalidSegmentIds(invalidSegments);
        }
        List<UpdateVO> invalidTimestampRangeList = split.getAllSplits().get(0).getInvalidTimestampRange();
        if ((null != invalidTimestampRangeList) && (invalidTimestampRangeList.size() > 0)) {
            queryModel.setInvalidBlockForSegmentId(invalidTimestampRangeList);
        }
    }
    return queryModel;
}

Example 4 with SingleTableProvider

use of org.apache.carbondata.core.scan.filter.SingleTableProvider in project carbondata by apache.

the class CarbonTableInputFormat method getSplits.

/**
 * {@inheritDoc}
 * Configurations FileInputFormat.INPUT_DIR
 * are used to get table path to read.
 *
 * @param job
 * @return List<InputSplit> list of CarbonInputSplit
 * @throws IOException
 */
@Override
public List<InputSplit> getSplits(JobContext job) throws IOException {
    AbsoluteTableIdentifier identifier = getAbsoluteTableIdentifier(job.getConfiguration());
    LoadMetadataDetails[] loadMetadataDetails = SegmentStatusManager.readTableStatusFile(CarbonTablePath.getTableStatusFilePath(identifier.getTablePath()));
    CarbonTable carbonTable = getOrCreateCarbonTable(job.getConfiguration());
    if (null == carbonTable) {
        throw new IOException("Missing/Corrupt schema file for table.");
    }
    SegmentUpdateStatusManager updateStatusManager = new SegmentUpdateStatusManager(carbonTable, loadMetadataDetails);
    List<Segment> invalidSegments = new ArrayList<>();
    List<UpdateVO> invalidTimestampsList = new ArrayList<>();
    List<Segment> streamSegments = null;
    // get all valid segments and set them into the configuration
    SegmentStatusManager segmentStatusManager = new SegmentStatusManager(identifier);
    SegmentStatusManager.ValidAndInvalidSegmentsInfo segments = segmentStatusManager.getValidAndInvalidSegments(loadMetadataDetails);
    if (getValidateSegmentsToAccess(job.getConfiguration())) {
        List<Segment> validSegments = segments.getValidSegments();
        streamSegments = segments.getStreamSegments();
        streamSegments = getFilteredSegment(job, streamSegments, true);
        if (validSegments.size() == 0) {
            return getSplitsOfStreaming(job, identifier, streamSegments);
        }
        List<Segment> filteredSegmentToAccess = getFilteredSegment(job, segments.getValidSegments(), true);
        if (filteredSegmentToAccess.size() == 0) {
            return getSplitsOfStreaming(job, identifier, streamSegments);
        } else {
            setSegmentsToAccess(job.getConfiguration(), filteredSegmentToAccess);
        }
        // remove entry in the segment index if there are invalid segments
        invalidSegments.addAll(segments.getInvalidSegments());
        for (Segment invalidSegmentId : invalidSegments) {
            invalidTimestampsList.add(updateStatusManager.getInvalidTimestampRange(invalidSegmentId.getSegmentNo()));
        }
        if (invalidSegments.size() > 0) {
            DataMapStoreManager.getInstance().clearInvalidSegments(getOrCreateCarbonTable(job.getConfiguration()), invalidSegments);
        }
    }
    ArrayList<Segment> validAndInProgressSegments = new ArrayList<>(segments.getValidSegments());
    // Add in progress segments also to filter it as in case of aggregate table load it loads
    // data from in progress table.
    validAndInProgressSegments.addAll(segments.getListOfInProgressSegments());
    // get updated filtered list
    List<Segment> filteredSegmentToAccess = getFilteredSegment(job, new ArrayList<>(validAndInProgressSegments), false);
    // Clean the updated segments from memory if the update happens on segments
    List<Segment> toBeCleanedSegments = new ArrayList<>();
    for (SegmentUpdateDetails segmentUpdateDetail : updateStatusManager.getUpdateStatusDetails()) {
        boolean refreshNeeded = DataMapStoreManager.getInstance().getTableSegmentRefresher(carbonTable).isRefreshNeeded(segmentUpdateDetail.getSegmentName(), updateStatusManager);
        if (refreshNeeded) {
            toBeCleanedSegments.add(new Segment(segmentUpdateDetail.getSegmentName(), null));
        }
    }
    // Clean segments if refresh is needed
    for (Segment segment : filteredSegmentToAccess) {
        if (DataMapStoreManager.getInstance().getTableSegmentRefresher(carbonTable).isRefreshNeeded(segment.getSegmentNo())) {
            toBeCleanedSegments.add(segment);
        }
    }
    if (toBeCleanedSegments.size() > 0) {
        DataMapStoreManager.getInstance().clearInvalidSegments(getOrCreateCarbonTable(job.getConfiguration()), toBeCleanedSegments);
    }
    // process and resolve the expression
    Expression filter = getFilterPredicates(job.getConfiguration());
    TableProvider tableProvider = new SingleTableProvider(carbonTable);
    // this will be null in case of corrupt schema file.
    PartitionInfo partitionInfo = carbonTable.getPartitionInfo(carbonTable.getTableName());
    carbonTable.processFilterExpression(filter, null, null);
    // prune partitions for filter query on partition table
    BitSet matchedPartitions = null;
    if (partitionInfo != null && partitionInfo.getPartitionType() != PartitionType.NATIVE_HIVE) {
        matchedPartitions = setMatchedPartitions(null, filter, partitionInfo, null);
        if (matchedPartitions != null) {
            if (matchedPartitions.cardinality() == 0) {
                return new ArrayList<InputSplit>();
            } else if (matchedPartitions.cardinality() == partitionInfo.getNumPartitions()) {
                matchedPartitions = null;
            }
        }
    }
    FilterResolverIntf filterInterface = carbonTable.resolveFilter(filter, tableProvider);
    // do block filtering and get split
    List<InputSplit> splits = getSplits(job, filterInterface, filteredSegmentToAccess, matchedPartitions, partitionInfo, null, updateStatusManager);
    // pass the invalid segment to task side in order to remove index entry in task side
    if (invalidSegments.size() > 0) {
        for (InputSplit split : splits) {
            ((org.apache.carbondata.hadoop.CarbonInputSplit) split).setInvalidSegments(invalidSegments);
            ((org.apache.carbondata.hadoop.CarbonInputSplit) split).setInvalidTimestampRange(invalidTimestampsList);
        }
    }
    // add all splits of streaming
    List<InputSplit> splitsOfStreaming = getSplitsOfStreaming(job, identifier, streamSegments);
    if (!splitsOfStreaming.isEmpty()) {
        splits.addAll(splitsOfStreaming);
    }
    return splits;
}

Example 5 with SingleTableProvider

use of org.apache.carbondata.core.scan.filter.SingleTableProvider in project carbondata by apache.

the class CarbonTableInputFormat method getSplitsOfOneSegment.

/**
 * Read data in one segment. For alter table partition statement
 * @param job
 * @param targetSegment
 * @param oldPartitionIdList  get old partitionId before partitionInfo was changed
 * @return
 */
public List<InputSplit> getSplitsOfOneSegment(JobContext job, String targetSegment, List<Integer> oldPartitionIdList, PartitionInfo partitionInfo) {
    List<Segment> invalidSegments = new ArrayList<>();
    List<UpdateVO> invalidTimestampsList = new ArrayList<>();
    List<Segment> segmentList = new ArrayList<>();
    segmentList.add(new Segment(targetSegment, null));
    setSegmentsToAccess(job.getConfiguration(), segmentList);
    try {
        // process and resolve the expression
        Expression filter = getFilterPredicates(job.getConfiguration());
        CarbonTable carbonTable = getOrCreateCarbonTable(job.getConfiguration());
        // this will be null in case of corrupt schema file.
        if (null == carbonTable) {
            throw new IOException("Missing/Corrupt schema file for table.");
        }
        carbonTable.processFilterExpression(filter, null, null);
        TableProvider tableProvider = new SingleTableProvider(carbonTable);
        // prune partitions for filter query on partition table
        String partitionIds = job.getConfiguration().get(ALTER_PARTITION_ID);
        // matchedPartitions records partitionIndex, not partitionId
        BitSet matchedPartitions = null;
        if (partitionInfo != null) {
            matchedPartitions = setMatchedPartitions(partitionIds, filter, partitionInfo, oldPartitionIdList);
            if (matchedPartitions != null) {
                if (matchedPartitions.cardinality() == 0) {
                    return new ArrayList<InputSplit>();
                } else if (matchedPartitions.cardinality() == partitionInfo.getNumPartitions()) {
                    matchedPartitions = null;
                }
            }
        }
        FilterResolverIntf filterInterface = carbonTable.resolveFilter(filter, tableProvider);
        // do block filtering and get split
        List<InputSplit> splits = getSplits(job, filterInterface, segmentList, matchedPartitions, partitionInfo, oldPartitionIdList, new SegmentUpdateStatusManager(carbonTable));
        // pass the invalid segment to task side in order to remove index entry in task side
        if (invalidSegments.size() > 0) {
            for (InputSplit split : splits) {
                ((CarbonInputSplit) split).setInvalidSegments(invalidSegments);
                ((CarbonInputSplit) split).setInvalidTimestampRange(invalidTimestampsList);
            }
        }
        return splits;
    } catch (IOException e) {
        throw new RuntimeException("Can't get splits of the target segment ", e);
    }
}