List of usage examples for org.apache.cassandra.io.sstable.format SSTableReader getKeyCacheHit
public long getKeyCacheHit()
From source file:org.elassandra.index.ElasticsearchIndexMetrics.java
License:Apache License
/** * Creates metrics for given {@link ColumnFamilyStore}. * * @param cfs ColumnFamilyStore to measure metrics *///from w w w . java 2 s .com 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); }