You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by br...@apache.org on 2014/06/13 14:53:55 UTC
[06/20] git commit: Track metrics at a keyspace level
Track metrics at a keyspace level
Patch by brandonwilliams, reviewed by yukim for CASSANDRA-6539
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/cecd1da3
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/cecd1da3
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/cecd1da3
Branch: refs/heads/cassandra-2.0
Commit: cecd1da318f19139446db526be035fb25e1c5b12
Parents: f1aa49b
Author: Brandon Williams <br...@apache.org>
Authored: Thu Jun 12 18:42:21 2014 -0500
Committer: Brandon Williams <br...@apache.org>
Committed: Fri Jun 13 07:47:12 2014 -0500
----------------------------------------------------------------------
src/java/org/apache/cassandra/db/Keyspace.java | 2 +-
.../cassandra/metrics/KeyspaceMetrics.java | 202 +++++++++++++++++++
2 files changed, 203 insertions(+), 1 deletion(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/cecd1da3/src/java/org/apache/cassandra/db/Keyspace.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Keyspace.java b/src/java/org/apache/cassandra/db/Keyspace.java
index 9651794..06df066 100644
--- a/src/java/org/apache/cassandra/db/Keyspace.java
+++ b/src/java/org/apache/cassandra/db/Keyspace.java
@@ -76,8 +76,8 @@ public class Keyspace
/* ColumnFamilyStore per column family */
private final ConcurrentMap<UUID, ColumnFamilyStore> columnFamilyStores = new ConcurrentHashMap<UUID, ColumnFamilyStore>();
private volatile AbstractReplicationStrategy replicationStrategy;
- public static final Function<String,Keyspace> keyspaceTransformer = new Function<String, Keyspace>()
public final KeyspaceMetrics metric;
+ public static final Function<String,Keyspace> keyspaceTransformer = new Function<String, Keyspace>()
{
public Keyspace apply(String keyspaceName)
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/cecd1da3/src/java/org/apache/cassandra/metrics/KeyspaceMetrics.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/metrics/KeyspaceMetrics.java b/src/java/org/apache/cassandra/metrics/KeyspaceMetrics.java
new file mode 100644
index 0000000..4a0980f
--- /dev/null
+++ b/src/java/org/apache/cassandra/metrics/KeyspaceMetrics.java
@@ -0,0 +1,202 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.cassandra.metrics;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.yammer.metrics.Metrics;
+import com.yammer.metrics.core.*;
+import com.yammer.metrics.stats.Snapshot;
+
+import org.apache.cassandra.db.ColumnFamilyStore;
+import org.apache.cassandra.db.Keyspace;
+
+/**
+ * Metrics for {@link ColumnFamilyStore}.
+ */
+public class KeyspaceMetrics
+{
+ /** Total amount of data stored in the memtable, including column related overhead. */
+ public final Gauge<Long> memtableDataSize;
+ /** Total amount of data stored in the memtables (2i and pending flush memtables included). */
+ public final Gauge<Long> allMemtablesDataSize;
+ /** Total number of columns present in the memtable. */
+ public final Gauge<Long> memtableColumnsCount;
+ /** Number of times flush has resulted in the memtable being switched out. */
+ public final Gauge<Long> memtableSwitchCount;
+ /** Estimated number of tasks pending for this column family */
+ public final Gauge<Integer> pendingTasks;
+ /** Estimate of number of pending compactios for this CF */
+ public final Gauge<Integer> pendingCompactions;
+ /** Disk space used by SSTables belonging to this CF */
+ public final Gauge<Long> liveDiskSpaceUsed;
+ /** Total disk space used by SSTables belonging to this CF, including obsolete ones waiting to be GC'd */
+ public final Gauge<Long> totalDiskSpaceUsed;
+ /** Disk space used by bloom filter */
+ public final Gauge<Long> bloomFilterDiskSpaceUsed;
+
+ private final MetricNameFactory factory;
+
+ /**
+ * Creates metrics for given {@link ColumnFamilyStore}.
+ *
+ * @param ks Keyspace to measure metrics
+ */
+ public KeyspaceMetrics(final Keyspace ks)
+ {
+ factory = new KeyspaceMetricNameFactory(ks);
+
+ memtableColumnsCount = Metrics.newGauge(factory.createMetricName("MemtableColumnsCount"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long total = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ total += cf.metric.memtableColumnsCount.value();
+ }
+ return total;
+ }
+ });
+ memtableDataSize = Metrics.newGauge(factory.createMetricName("MemtableDataSize"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long total = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ total += cf.metric.memtableDataSize.value();
+ }
+ return total;
+ }
+ });
+ allMemtablesDataSize = Metrics.newGauge(factory.createMetricName("AllMemtablesDataSize"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long total = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ total += cf.metric.allMemtablesDataSize.value();
+ }
+ return total;
+ }
+ });
+ memtableSwitchCount = Metrics.newGauge(factory.createMetricName("MemtableSwitchCount"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long sum = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ sum += cf.metric.memtableSwitchCount.count();
+ return sum;
+ }
+ });
+ pendingCompactions = Metrics.newGauge(factory.createMetricName("PendingCompactions"), new Gauge<Integer>()
+ {
+ public Integer value()
+ {
+ int sum = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ sum += cf.metric.pendingCompactions.value();
+ }
+ return sum;
+ }
+ });
+ pendingTasks = Metrics.newGauge(factory.createMetricName("PendingTasks"), new Gauge<Integer>()
+ {
+ public Integer value()
+ {
+ return Keyspace.switchLock.getQueueLength();
+ }
+ });
+ liveDiskSpaceUsed = Metrics.newGauge(factory.createMetricName("LiveDiskSpaceUsed"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long sum = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ sum += cf.metric.liveDiskSpaceUsed.count();
+ }
+ return sum;
+ }
+ });
+ totalDiskSpaceUsed = Metrics.newGauge(factory.createMetricName("TotalDiskSpaceUsed"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long sum = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ {
+ sum += cf.metric.totalDiskSpaceUsed.count();
+ }
+ return sum;
+ }
+ });
+ bloomFilterDiskSpaceUsed = Metrics.newGauge(factory.createMetricName("BloomFilterDiskSpaceUsed"), new Gauge<Long>()
+ {
+ public Long value()
+ {
+ long total = 0;
+ for (ColumnFamilyStore cf : ks.getColumnFamilyStores())
+ total += cf.metric.bloomFilterDiskSpaceUsed.value();
+ return total;
+ }
+ });
+ }
+
+ /**
+ * Release all associated metrics.
+ */
+ public void release()
+ {
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("AllMemtablesDataSize"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("MemtableDataSize"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("MemtableSwitchCount"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("PendingTasks"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("LiveDiskSpaceUsed"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("TotalDiskSpaceUsed"));
+ Metrics.defaultRegistry().removeMetric(factory.createMetricName("BloomFilterDiskSpaceUsed"));
+ }
+
+ class KeyspaceMetricNameFactory implements MetricNameFactory
+ {
+ private final String keyspaceName;
+
+ KeyspaceMetricNameFactory(Keyspace ks)
+ {
+ this.keyspaceName = ks.getName();
+ }
+
+ public MetricName createMetricName(String metricName)
+ {
+ String groupName = ColumnFamilyMetrics.class.getPackage().getName();
+
+ StringBuilder mbeanName = new StringBuilder();
+ mbeanName.append(groupName).append(":");
+ mbeanName.append("type=Keyspace");
+ mbeanName.append(",keyspace=").append(keyspaceName);
+ mbeanName.append(",name=").append(metricName);
+
+ return new MetricName(groupName, "keyspace", metricName, keyspaceName, mbeanName.toString());
+ }
+ }
+}