Example usage for org.apache.cassandra.io.sstable.metadata MetadataCollector NO_COMPRESSION

Introduction

In this page you can find the example usage for org.apache.cassandra.io.sstable.metadata MetadataCollector NO_COMPRESSION_RATIO.

Prototype

double NO_COMPRESSION_RATIO

To view the source code for org.apache.cassandra.io.sstable.metadata MetadataCollector NO_COMPRESSION_RATIO.

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Usage

From source file:org.elassandra.index.ElasticsearchIndexMetrics.java

License:Apache License

/**
 * Creates metrics for given {@link ColumnFamilyStore}.
 *
 * @param cfs ColumnFamilyStore to measure metrics
 *///from  ww w.  j a va2  s  . c  om
public ElasticsearchIndexMetrics(final ColumnFamilyStore cfs) {
    factory = new ColumnFamilyMetricNameFactory(cfs);

    samplers = Maps.newHashMap();
    for (Sampler sampler : Sampler.values()) {
        samplers.put(sampler, new TopKSampler<ByteBuffer>());
    }

    memtableColumnsCount = createColumnFamilyGauge("MemtableColumnsCount", new Gauge<Long>() {
        public Long getValue() {
            return cfs.getTracker().getView().getCurrentMemtable().getOperations();
        }
    });
    memtableOnHeapSize = createColumnFamilyGauge("MemtableOnHeapSize", new Gauge<Long>() {
        public Long getValue() {
            return cfs.getTracker().getView().getCurrentMemtable().getAllocator().onHeap().owns();
        }
    });
    memtableOffHeapSize = createColumnFamilyGauge("MemtableOffHeapSize", new Gauge<Long>() {
        public Long getValue() {
            return cfs.getTracker().getView().getCurrentMemtable().getAllocator().offHeap().owns();
        }
    });
    memtableLiveDataSize = createColumnFamilyGauge("MemtableLiveDataSize", new Gauge<Long>() {
        public Long getValue() {
            return cfs.getTracker().getView().getCurrentMemtable().getLiveDataSize();
        }
    });
    allMemtablesOnHeapSize = createColumnFamilyGauge("AllMemtablesHeapSize", new Gauge<Long>() {
        public Long getValue() {
            long size = 0;
            for (ColumnFamilyStore cfs2 : cfs.concatWithIndexes())
                size += cfs2.getTracker().getView().getCurrentMemtable().getAllocator().onHeap().owns();
            return size;
        }
    });
    allMemtablesOffHeapSize = createColumnFamilyGauge("AllMemtablesOffHeapSize", new Gauge<Long>() {
        public Long getValue() {
            long size = 0;
            for (ColumnFamilyStore cfs2 : cfs.concatWithIndexes())
                size += cfs2.getTracker().getView().getCurrentMemtable().getAllocator().offHeap().owns();
            return size;
        }
    });
    allMemtablesLiveDataSize = createColumnFamilyGauge("AllMemtablesLiveDataSize", new Gauge<Long>() {
        public Long getValue() {
            long size = 0;
            for (ColumnFamilyStore cfs2 : cfs.concatWithIndexes())
                size += cfs2.getTracker().getView().getCurrentMemtable().getLiveDataSize();
            return size;
        }
    });
    memtableSwitchCount = createColumnFamilyCounter("MemtableSwitchCount");
    estimatedRowSizeHistogram = Metrics.register(factory.createMetricName("EstimatedRowSizeHistogram"),
            new Gauge<long[]>() {
                public long[] getValue() {
                    return combineHistograms(cfs.getSSTables(), new GetHistogram() {
                        public EstimatedHistogram getHistogram(SSTableReader reader) {
                            return reader.getEstimatedRowSize();
                        }
                    });
                }
            });
    estimatedRowCount = Metrics.register(factory.createMetricName("EstimatedRowCount"), new Gauge<Long>() {
        public Long getValue() {
            long memtablePartitions = 0;
            for (Memtable memtable : cfs.getTracker().getView().getAllMemtables())
                memtablePartitions += memtable.partitionCount();
            return SSTableReader.getApproximateKeyCount(cfs.getSSTables()) + memtablePartitions;
        }
    });
    estimatedColumnCountHistogram = Metrics.register(factory.createMetricName("EstimatedColumnCountHistogram"),
            new Gauge<long[]>() {
                public long[] getValue() {
                    return combineHistograms(cfs.getSSTables(), new GetHistogram() {
                        public EstimatedHistogram getHistogram(SSTableReader reader) {
                            return reader.getEstimatedColumnCount();
                        }
                    });
                }
            });
    sstablesPerReadHistogram = createColumnFamilyHistogram("SSTablesPerReadHistogram",
            cfs.keyspace.metric.sstablesPerReadHistogram, true);
    compressionRatio = createColumnFamilyGauge("CompressionRatio", new Gauge<Double>() {
        public Double getValue() {
            double sum = 0;
            int total = 0;
            for (SSTableReader sstable : cfs.getSSTables()) {
                if (sstable.getCompressionRatio() != MetadataCollector.NO_COMPRESSION_RATIO) {
                    sum += sstable.getCompressionRatio();
                    total++;
                }
            }
            return total != 0 ? sum / total : 0;
        }
    }, new Gauge<Double>() // global gauge
    {
        public Double getValue() {
            double sum = 0;
            int total = 0;
            for (Keyspace keyspace : Keyspace.all()) {
                for (SSTableReader sstable : keyspace.getAllSSTables()) {
                    if (sstable.getCompressionRatio() != MetadataCollector.NO_COMPRESSION_RATIO) {
                        sum += sstable.getCompressionRatio();
                        total++;
                    }
                }
            }
            return total != 0 ? sum / total : 0;
        }
    });
    readLatency = new LatencyMetrics(factory, "Read", cfs.keyspace.metric.readLatency, globalReadLatency);
    writeLatency = new LatencyMetrics(factory, "Write", cfs.keyspace.metric.writeLatency, globalWriteLatency);
    rangeLatency = new LatencyMetrics(factory, "Range", cfs.keyspace.metric.rangeLatency, globalRangeLatency);
    pendingFlushes = createColumnFamilyCounter("PendingFlushes");
    pendingCompactions = createColumnFamilyGauge("PendingCompactions", new Gauge<Integer>() {
        public Integer getValue() {
            return cfs.getCompactionStrategy().getEstimatedRemainingTasks();
        }
    });
    liveSSTableCount = createColumnFamilyGauge("LiveSSTableCount", new Gauge<Integer>() {
        public Integer getValue() {
            return cfs.getTracker().getSSTables().size();
        }
    });
    liveDiskSpaceUsed = createColumnFamilyCounter("LiveDiskSpaceUsed");
    totalDiskSpaceUsed = createColumnFamilyCounter("TotalDiskSpaceUsed");
    minRowSize = createColumnFamilyGauge("MinRowSize", new Gauge<Long>() {
        public Long getValue() {
            long min = 0;
            for (SSTableReader sstable : cfs.getSSTables()) {
                if (min == 0 || sstable.getEstimatedRowSize().min() < min)
                    min = sstable.getEstimatedRowSize().min();
            }
            return min;
        }
    }, new Gauge<Long>() // global gauge
    {
        public Long getValue() {
            long min = Long.MAX_VALUE;
            for (Metric cfGauge : allColumnFamilyMetrics.get("MinRowSize")) {
                min = Math.min(min, ((Gauge<? extends Number>) cfGauge).getValue().longValue());
            }
            return min;
        }
    });
    maxRowSize = createColumnFamilyGauge("MaxRowSize", new Gauge<Long>() {
        public Long getValue() {
            long max = 0;
            for (SSTableReader sstable : cfs.getSSTables()) {
                if (sstable.getEstimatedRowSize().max() > max)
                    max = sstable.getEstimatedRowSize().max();
            }
            return max;
        }
    }, new Gauge<Long>() // global gauge
    {
        public Long getValue() {
            long max = 0;
            for (Metric cfGauge : allColumnFamilyMetrics.get("MaxRowSize")) {
                max = Math.max(max, ((Gauge<? extends Number>) cfGauge).getValue().longValue());
            }
            return max;
        }
    });
    meanRowSize = createColumnFamilyGauge("MeanRowSize", new Gauge<Long>() {
        public Long getValue() {
            long sum = 0;
            long count = 0;
            for (SSTableReader sstable : cfs.getSSTables()) {
                long n = sstable.getEstimatedRowSize().count();
                sum += sstable.getEstimatedRowSize().mean() * n;
                count += n;
            }
            return count > 0 ? sum / count : 0;
        }
    }, new Gauge<Long>() // global gauge
    {
        public Long getValue() {
            long sum = 0;
            long count = 0;
            for (Keyspace keyspace : Keyspace.all()) {
                for (SSTableReader sstable : keyspace.getAllSSTables()) {
                    long n = sstable.getEstimatedRowSize().count();
                    sum += sstable.getEstimatedRowSize().mean() * n;
                    count += n;
                }
            }
            return count > 0 ? sum / count : 0;
        }
    });
    bloomFilterFalsePositives = createColumnFamilyGauge("BloomFilterFalsePositives", new Gauge<Long>() {
        public Long getValue() {
            long count = 0L;
            for (SSTableReader sstable : cfs.getSSTables())
                count += sstable.getBloomFilterFalsePositiveCount();
            return count;
        }
    });
    recentBloomFilterFalsePositives = createColumnFamilyGauge("RecentBloomFilterFalsePositives",
            new Gauge<Long>() {
                public Long getValue() {
                    long count = 0L;
                    for (SSTableReader sstable : cfs.getSSTables())
                        count += sstable.getRecentBloomFilterFalsePositiveCount();
                    return count;
                }
            });
    bloomFilterFalseRatio = createColumnFamilyGauge("BloomFilterFalseRatio", new Gauge<Double>() {
        public Double getValue() {
            long falseCount = 0L;
            long trueCount = 0L;
            for (SSTableReader sstable : cfs.getSSTables()) {
                falseCount += sstable.getBloomFilterFalsePositiveCount();
                trueCount += sstable.getBloomFilterTruePositiveCount();
            }
            if (falseCount == 0L && trueCount == 0L)
                return 0d;
            return (double) falseCount / (trueCount + falseCount);
        }
    }, new Gauge<Double>() // global gauge
    {
        public Double getValue() {
            long falseCount = 0L;
            long trueCount = 0L;
            for (Keyspace keyspace : Keyspace.all()) {
                for (SSTableReader sstable : keyspace.getAllSSTables()) {
                    falseCount += sstable.getBloomFilterFalsePositiveCount();
                    trueCount += sstable.getBloomFilterTruePositiveCount();
                }
            }
            if (falseCount == 0L && trueCount == 0L)
                return 0d;
            return (double) falseCount / (trueCount + falseCount);
        }
    });
    recentBloomFilterFalseRatio = createColumnFamilyGauge("RecentBloomFilterFalseRatio", new Gauge<Double>() {
        public Double getValue() {
            long falseCount = 0L;
            long trueCount = 0L;
            for (SSTableReader sstable : cfs.getSSTables()) {
                falseCount += sstable.getRecentBloomFilterFalsePositiveCount();
                trueCount += sstable.getRecentBloomFilterTruePositiveCount();
            }
            if (falseCount == 0L && trueCount == 0L)
                return 0d;
            return (double) falseCount / (trueCount + falseCount);
        }
    }, new Gauge<Double>() // global gauge
    {
        public Double getValue() {
            long falseCount = 0L;
            long trueCount = 0L;
            for (Keyspace keyspace : Keyspace.all()) {
                for (SSTableReader sstable : keyspace.getAllSSTables()) {
                    falseCount += sstable.getRecentBloomFilterFalsePositiveCount();
                    trueCount += sstable.getRecentBloomFilterTruePositiveCount();
                }
            }
            if (falseCount == 0L && trueCount == 0L)
                return 0d;
            return (double) falseCount / (trueCount + falseCount);
        }
    });
    bloomFilterDiskSpaceUsed = createColumnFamilyGauge("BloomFilterDiskSpaceUsed", new Gauge<Long>() {
        public Long getValue() {
            long total = 0;
            for (SSTableReader sst : cfs.getSSTables())
                total += sst.getBloomFilterSerializedSize();
            return total;
        }
    });
    bloomFilterOffHeapMemoryUsed = createColumnFamilyGauge("BloomFilterOffHeapMemoryUsed", new Gauge<Long>() {
        public Long getValue() {
            long total = 0;
            for (SSTableReader sst : cfs.getSSTables())
                total += sst.getBloomFilterOffHeapSize();
            return total;
        }
    });
    indexSummaryOffHeapMemoryUsed = createColumnFamilyGauge("IndexSummaryOffHeapMemoryUsed", new Gauge<Long>() {
        public Long getValue() {
            long total = 0;
            for (SSTableReader sst : cfs.getSSTables())
                total += sst.getIndexSummaryOffHeapSize();
            return total;
        }
    });
    compressionMetadataOffHeapMemoryUsed = createColumnFamilyGauge("CompressionMetadataOffHeapMemoryUsed",
            new Gauge<Long>() {
                public Long getValue() {
                    long total = 0;
                    for (SSTableReader sst : cfs.getSSTables())
                        total += sst.getCompressionMetadataOffHeapSize();
                    return total;
                }
            });
    speculativeRetries = createColumnFamilyCounter("SpeculativeRetries");
    keyCacheHitRate = Metrics.register(factory.createMetricName("KeyCacheHitRate"), new RatioGauge() {
        @Override
        public Ratio getRatio() {
            return Ratio.of(getNumerator(), getDenominator());
        }

        protected double getNumerator() {
            long hits = 0L;
            for (SSTableReader sstable : cfs.getSSTables())
                hits += sstable.getKeyCacheHit();
            return hits;
        }

        protected double getDenominator() {
            long requests = 0L;
            for (SSTableReader sstable : cfs.getSSTables())
                requests += sstable.getKeyCacheRequest();
            return Math.max(requests, 1); // to avoid NaN.
        }
    });
    tombstoneScannedHistogram = createColumnFamilyHistogram("TombstoneScannedHistogram",
            cfs.keyspace.metric.tombstoneScannedHistogram, false);
    liveScannedHistogram = createColumnFamilyHistogram("LiveScannedHistogram",
            cfs.keyspace.metric.liveScannedHistogram, false);
    colUpdateTimeDeltaHistogram = createColumnFamilyHistogram("ColUpdateTimeDeltaHistogram",
            cfs.keyspace.metric.colUpdateTimeDeltaHistogram, false);
    coordinatorReadLatency = Metrics.timer(factory.createMetricName("CoordinatorReadLatency"));
    coordinatorScanLatency = Metrics.timer(factory.createMetricName("CoordinatorScanLatency"));
    waitingOnFreeMemtableSpace = Metrics.histogram(factory.createMetricName("WaitingOnFreeMemtableSpace"),
            false);

    trueSnapshotsSize = createColumnFamilyGauge("SnapshotsSize", new Gauge<Long>() {
        public Long getValue() {
            return cfs.trueSnapshotsSize();
        }
    });
    rowCacheHitOutOfRange = createColumnFamilyCounter("RowCacheHitOutOfRange");
    rowCacheHit = createColumnFamilyCounter("RowCacheHit");
    rowCacheMiss = createColumnFamilyCounter("RowCacheMiss");

    casPrepare = new LatencyMetrics(factory, "CasPrepare", cfs.keyspace.metric.casPrepare);
    casPropose = new LatencyMetrics(factory, "CasPropose", cfs.keyspace.metric.casPropose);
    casCommit = new LatencyMetrics(factory, "CasCommit", cfs.keyspace.metric.casCommit);
}

Example usage for org.apache.cassandra.io.sstable.metadata MetadataCollector NO_COMPRESSION_RATIO

Introduction

Prototype

Usage