Examples with DataMap org.apache.carbondata.core.datamap.dev.DataMap used on opensource projects

Example 1 with DataMap

use of org.apache.carbondata.core.datamap.dev.DataMap in project carbondata by apache.

the class BlockletDataMapFactory method clear.

@Override
public void clear(Segment segment) {
    List<TableBlockIndexUniqueIdentifier> blockIndexes = segmentMap.remove(segment.getSegmentNo());
    if (blockIndexes != null) {
        for (TableBlockIndexUniqueIdentifier blockIndex : blockIndexes) {
            DataMap dataMap = cache.getIfPresent(blockIndex);
            if (dataMap != null) {
                cache.invalidate(blockIndex);
                dataMap.clear();
            }
        }
    }
}

Example 2 with DataMap

use of org.apache.carbondata.core.datamap.dev.DataMap in project carbondata by apache.

the class TableDataMap method prune.

/**
 * Pass the valid segments and prune the datamap using filter expression
 *
 * @param segments
 * @param filterExp
 * @return
 */
public List<ExtendedBlocklet> prune(List<Segment> segments, FilterResolverIntf filterExp, List<PartitionSpec> partitions) throws IOException {
    List<ExtendedBlocklet> blocklets = new ArrayList<>();
    SegmentProperties segmentProperties;
    for (Segment segment : segments) {
        List<Blocklet> pruneBlocklets = new ArrayList<>();
        // if filter is not passed then return all the blocklets
        if (filterExp == null) {
            pruneBlocklets = blockletDetailsFetcher.getAllBlocklets(segment, partitions);
        } else {
            List<DataMap> dataMaps = dataMapFactory.getDataMaps(segment);
            segmentProperties = segmentPropertiesFetcher.getSegmentProperties(segment);
            for (DataMap dataMap : dataMaps) {
                pruneBlocklets.addAll(dataMap.prune(filterExp, segmentProperties, partitions));
            }
        }
        blocklets.addAll(addSegmentId(blockletDetailsFetcher.getExtendedBlocklets(pruneBlocklets, segment), segment.getSegmentNo()));
    }
    return blocklets;
}

Example 3 with DataMap

use of org.apache.carbondata.core.datamap.dev.DataMap in project carbondata by apache.

the class TableDataMap method prune.

/**
 * This method is used from any machine after it is distributed. It takes the distributable object
 * to prune the filters.
 *
 * @param distributable
 * @param filterExp
 * @return
 */
public List<ExtendedBlocklet> prune(DataMapDistributable distributable, FilterResolverIntf filterExp, List<PartitionSpec> partitions) throws IOException {
    List<ExtendedBlocklet> detailedBlocklets = new ArrayList<>();
    List<Blocklet> blocklets = new ArrayList<>();
    List<DataMap> dataMaps = dataMapFactory.getDataMaps(distributable);
    for (DataMap dataMap : dataMaps) {
        blocklets.addAll(dataMap.prune(filterExp, segmentPropertiesFetcher.getSegmentProperties(distributable.getSegment()), partitions));
    }
    BlockletSerializer serializer = new BlockletSerializer();
    String writePath = identifier.getTablePath() + CarbonCommonConstants.FILE_SEPARATOR + dataMapSchema.getDataMapName();
    if (dataMapFactory.getDataMapType() == DataMapLevel.FG) {
        FileFactory.mkdirs(writePath, FileFactory.getFileType(writePath));
    }
    for (Blocklet blocklet : blocklets) {
        ExtendedBlocklet detailedBlocklet = blockletDetailsFetcher.getExtendedBlocklet(blocklet, distributable.getSegment());
        if (dataMapFactory.getDataMapType() == DataMapLevel.FG) {
            String blockletwritePath = writePath + CarbonCommonConstants.FILE_SEPARATOR + System.nanoTime();
            detailedBlocklet.setDataMapWriterPath(blockletwritePath);
            serializer.serializeBlocklet((FineGrainBlocklet) blocklet, blockletwritePath);
        }
        detailedBlocklet.setSegmentId(distributable.getSegment().getSegmentNo());
        detailedBlocklets.add(detailedBlocklet);
    }
    return detailedBlocklets;
}