Package com.clearspring.analytics.stream.cardinality

Examples of com.clearspring.analytics.stream.cardinality.ICardinality

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        // if it is, load them to estimate key count
        if (cardinalityAvailable)
        {
            boolean failed = false;
            ICardinality cardinality = null;
            for (SSTableReader sstable : sstables)
            {
                try
                {
                    CompactionMetadata metadata = (CompactionMetadata) sstable.descriptor.getMetadataSerializer().deserialize(sstable.descriptor, MetadataType.COMPACTION);
                    if (cardinality == null)
                        cardinality = metadata.cardinalityEstimator;
                    else
                        cardinality = cardinality.merge(metadata.cardinalityEstimator);
                }
                catch (IOException e)
                {
                    logger.warn("Reading cardinality from Statistics.db failed.", e);
                    failed = true;
                    break;
                }
                catch (CardinalityMergeException e)
                {
                    logger.warn("Cardinality merge failed.", e);
                    failed = true;
                    break;
                }
            }
            if (cardinality != null && !failed)
                count = cardinality.cardinality();
        }

        // if something went wrong above or cardinality is not available, calculate using index summary
        if (count < 0)
        {
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        {
            int nbAncestors = in.readInt();
            Set<Integer> ancestors = new HashSet<>(nbAncestors);
            for (int i = 0; i < nbAncestors; i++)
                ancestors.add(in.readInt());
            ICardinality cardinality = HyperLogLogPlus.Builder.build(ByteBufferUtil.readBytes(in, in.readInt()));
            return new CompactionMetadata(ancestors, cardinality);
        }
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        // if it is, load them to estimate key count
        if (cardinalityAvailable)
        {
            boolean failed = false;
            ICardinality cardinality = null;
            for (SSTableReader sstable : sstables)
            {
                try
                {
                    CompactionMetadata metadata = (CompactionMetadata) sstable.descriptor.getMetadataSerializer().deserialize(sstable.descriptor, MetadataType.COMPACTION);
                    if (cardinality == null)
                        cardinality = metadata.cardinalityEstimator;
                    else
                        cardinality = cardinality.merge(metadata.cardinalityEstimator);
                }
                catch (IOException e)
                {
                    logger.warn("Reading cardinality from Statistics.db failed.", e);
                    failed = true;
                    break;
                }
                catch (CardinalityMergeException e)
                {
                    logger.warn("Cardinality merge failed.", e);
                    failed = true;
                    break;
                }
            }
            if (cardinality != null && !failed)
                count = cardinality.cardinality();
        }

        // if something went wrong above or cardinality is not available, calculate using index summary
        if (count < 0)
        {
View Full Code Here
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        // if it is, load them to estimate key count
        if (cardinalityAvailable)
        {
            boolean failed = false;
            ICardinality cardinality = null;
            for (SSTableReader sstable : sstables)
            {
                try
                {
                    CompactionMetadata metadata = (CompactionMetadata) sstable.descriptor.getMetadataSerializer().deserialize(sstable.descriptor, MetadataType.COMPACTION);
                    if (cardinality == null)
                        cardinality = metadata.cardinalityEstimator;
                    else
                        cardinality = cardinality.merge(metadata.cardinalityEstimator);
                }
                catch (IOException e)
                {
                    logger.warn("Reading cardinality from Statistics.db failed.", e);
                    failed = true;
                    break;
                }
                catch (CardinalityMergeException e)
                {
                    logger.warn("Cardinality merge failed.", e);
                    failed = true;
                    break;
                }
            }
            if (cardinality != null && !failed)
                count = cardinality.cardinality();
        }

        // if something went wrong above or cardinality is not available, calculate using index summary
        if (count < 0)
        {
View Full Code Here
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                System.err.print("Bad update rate: '"+args[0]+"'  Update rate must be an integer.");
                usage();
            }
        }
       
        ICardinality card = AdaptiveCounting.Builder.obyCount(Integer.MAX_VALUE).build();
       
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

        String line = null;
        while((line = in.readLine()) != null)
        {           
            card.offer(line);
            count++;
           
            if(updateRate > 0 && count % updateRate == 0)
            {
                System.out.println(formatSummary(count, card.cardinality()));
            }
        }
       
        System.out.println(formatSummary(count, card.cardinality()));               
    }      
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        {
            int nbAncestors = in.readInt();
            Set<Integer> ancestors = new HashSet<>(nbAncestors);
            for (int i = 0; i < nbAncestors; i++)
                ancestors.add(in.readInt());
            ICardinality cardinality = HyperLogLogPlus.Builder.build(ByteBufferUtil.readBytes(in, in.readInt()));
            return new CompactionMetadata(ancestors, cardinality);
        }
View Full Code Here
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        // if it is, load them to estimate key count
        if (cardinalityAvailable)
        {
            boolean failed = false;
            ICardinality cardinality = null;
            for (SSTableReader sstable : sstables)
            {
                try
                {
                    CompactionMetadata metadata = (CompactionMetadata) sstable.descriptor.getMetadataSerializer().deserialize(sstable.descriptor, MetadataType.COMPACTION);
                    assert metadata != null : sstable.getFilename();
                    if (cardinality == null)
                        cardinality = metadata.cardinalityEstimator;
                    else
                        cardinality = cardinality.merge(metadata.cardinalityEstimator);
                }
                catch (IOException e)
                {
                    logger.warn("Reading cardinality from Statistics.db failed.", e);
                    failed = true;
                    break;
                }
                catch (CardinalityMergeException e)
                {
                    logger.warn("Cardinality merge failed.", e);
                    failed = true;
                    break;
                }
            }
            if (cardinality != null && !failed)
                count = cardinality.cardinality();
        }

        // if something went wrong above or cardinality is not available, calculate using index summary
        if (count < 0)
        {
View Full Code Here
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        // if it is, load them to estimate key count
        if (cardinalityAvailable)
        {
            boolean failed = false;
            ICardinality cardinality = null;
            for (SSTableReader sstable : sstables)
            {
                try
                {
                    CompactionMetadata metadata = (CompactionMetadata) sstable.descriptor.getMetadataSerializer().deserialize(sstable.descriptor, MetadataType.COMPACTION);
                    if (cardinality == null)
                        cardinality = metadata.cardinalityEstimator;
                    else
                        cardinality = cardinality.merge(metadata.cardinalityEstimator);
                }
                catch (IOException e)
                {
                    logger.warn("Reading cardinality from Statistics.db failed.", e);
                    failed = true;
                    break;
                }
                catch (CardinalityMergeException e)
                {
                    logger.warn("Cardinality merge failed.", e);
                    failed = true;
                    break;
                }
            }
            if (cardinality != null && !failed)
                count = cardinality.cardinality();
        }

        // if something went wrong above or cardinality is not available, calculate using index summary
        if (count < 0)
        {
View Full Code Here
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        {
            int nbAncestors = in.readInt();
            Set<Integer> ancestors = new HashSet<>(nbAncestors);
            for (int i = 0; i < nbAncestors; i++)
                ancestors.add(in.readInt());
            ICardinality cardinality = HyperLogLogPlus.Builder.build(ByteBufferUtil.readBytes(in, in.readInt()));
            return new CompactionMetadata(ancestors, cardinality);
        }
View Full Code Here
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                System.err.print("Bad update rate: '" + args[0] + "'  Update rate must be an integer.");
                usage();
            }
        }

        ICardinality card = AdaptiveCounting.Builder.obyCount(Integer.MAX_VALUE).build();

        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

        String line = null;
        while ((line = in.readLine()) != null) {
            card.offer(line);
            count++;

            if (updateRate > 0 && count % updateRate == 0) {
                System.out.println(formatSummary(count, card.cardinality()));
            }
        }

        System.out.println(formatSummary(count, card.cardinality()));
    }
View Full Code Here
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Related Classes of com.clearspring.analytics.stream.cardinality.ICardinality

  • brickhouse.udf.hll.CombineHyperLogLogUDF
  • brickhouse.udf.hll.HLLBuffer
  • com.clearspring.analytics.util.ObyCount
  • com.liveramp.cascading_ext.combiner.lib.HyperLogLogExactAggregator
  • org.apache.cassandra.io.sstable.format.SSTableReader
  • org.apache.cassandra.io.sstable.metadata.CompactionMetadata$CompactionMetadataSerializer
  • org.apache.cassandra.io.sstable.SSTableReader
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