[cassandra] Add updated metrics for Cassandra 2 and 3.x
When the version attribute is set to 3. We don't update the metrics
when the version attribute is set to 2 to avoid changing the metrics
collected on existing Agent installs.
MODIFY
recipes/cassandra.rb
recipes/cassandra.rb
@@ -10,9 +10,12 @@ include_recipe 'datadog::dd-agent'
# Select the appropriate configuration file template. Available options are:
# * `1` (Default, recommended for Cassandra < 2.2).
# Use Cassandra legacy metrics, i.e. https://github.com/DataDog/dd-agent/blob/5.6.x/conf.d/cassandra.yaml.example#L23-L74
-# * `2` (recommended for Cassandra >= 2.2).
+# * `2` (recommended for existing Agent installs for Cassandra >= 2.2 and < 3.0).
# Use Cassandra expanded metrics (CASSANDRA-4009) introduced in 1.2 (https://wiki.apache.org/cassandra/Metrics),
# i.e. https://github.com/DataDog/integrations-core/blob/master/cassandra/conf.yaml.example#L23-L102
+# * `3` (recommended for Cassandra >= 3.0, and for new Agent installs for Cassandra >= 2.2).
+# Collect most Cassandra metrics to fully populate the default Cassandra dashboard on Datadog,
+# i.e. https://github.com/DataDog/integrations-core/blob/5.22.0/cassandra/conf.yaml.example#L35-L460
# Example:

MODIFY
spec/integrations/cassandra_spec.rb
spec/integrations/cassandra_spec.rb
@@ -362,4 +362,478 @@ describe 'datadog::cassandra' do
})
end
end
+
+ context 'version 3' do
+ expected_yaml = <<-EOF
+ logs: ~
+ instances:
+ - host: localhost
+ port: 7199
+ cassandra_aliasing: true
+ user: someuser
+ password: somepass
+ process_name_regex: .*cassandra.*
+ init_config:
+ conf:
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ClientRequest
+ name:
+ - Latency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: DroppedMessage
+ name:
+ - Dropped
+ attribute:
+ - OneMinuteRate
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ThreadPools
+ scope:
+ - MutationStage
+ - CounterMutationStage
+ - ReadStage
+ - ViewMutationStage
+ name:
+ - PendingTasks
+ - CurrentlyBlockedTasks
+ path:
+ - request
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ThreadPools
+ scope:
+ - MemtableFlushWriter
+ - HintsDispatcher
+ - MemtablePostFlush
+ - MigrationStage
+ - MiscStage
+ - SecondaryIndexManagement
+ name:
+ - PendingTasks
+ - CurrentlyBlockedTasks
+ path:
+ - internal
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Storage
+ name:
+ - Load
+ - Exceptions
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ReadLatency
+ - WriteLatency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - 99thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - RangeLatency
+ - CasPrepareLatency
+ - CasProposeLatency
+ - CasCommitLatency
+ - ViewLockAcquireTime
+ - ViewReadTime
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - SSTablesPerReadHistogram
+ - TombstoneScannedHistogram
+ - WaitingOnFreeMemtableSpace
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ColUpdateTimeDeltaHistogram
+ attribute:
+ - Min
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - BloomFilterFalseRatio
+ - CompressionRatio
+ - KeyCacheHitRate
+ - LiveSSTableCount
+ - MaxPartitionSize
+ - MeanPartitionSize
+ - MeanRowSize
+ - MaxRowSize
+ - PendingCompactions
+ - SnapshotsSize
+ attribute:
+ - Value
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - CompactionBytesWritten
+ - BytesFlushed
+ - PendingFlushes
+ - LiveDiskSpaceUsed
+ - TotalDiskSpaceUsed
+ - RowCacheHitOutOfRange
+ - RowCacheHit
+ - RowCacheMiss
+ attribute:
+ - Count
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Cache
+ scope: KeyCache
+ name:
+ - HitRate
+ attribute:
+ - Count
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: CommitLog
+ name:
+ - PendingTasks
+ - TotalCommitLogSize
+ attribute:
+ - Value
+ - include:
+ domain: org.apache.cassandra.db
+ type: Tables
+ attribute:
+ DroppableTombstoneRatio:
+ alias: cassandra.db.droppable_tombstone_ratio
+ # Young Gen Collectors (Minor Collections)
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: Copy
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: PS Scavenge
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: ParNew
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: G1 Young Generation
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ # Old Gen Collectors (Major collections)
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: MarkSweepCompact
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: PS MarkSweep
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: ConcurrentMarkSweep
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: G1 Mixed Generation
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ReadLatency
+ - WriteLatency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - 99thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - RangeLatency
+ - CasPrepareLatency
+ - CasProposeLatency
+ - CasCommitLatency
+ - ViewLockAcquireTime
+ - ViewReadTime
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - SSTablesPerReadHistogram
+ - TombstoneScannedHistogram
+ - WaitingOnFreeMemtableSpace
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ColUpdateTimeDeltaHistogram
+ attribute:
+ - Min
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - BloomFilterFalseRatio
+ - CompressionRatio
+ - KeyCacheHitRate
+ - LiveSSTableCount
+ - MaxPartitionSize
+ - MeanPartitionSize
+ - MeanRowSize
+ - MaxRowSize
+ - PendingCompactions
+ - SnapshotsSize
+ attribute:
+ - Value
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - PendingFlushes
+ - LiveDiskSpaceUsed
+ - TotalDiskSpaceUsed
+ - RowCacheHitOutOfRange
+ - RowCacheHit
+ - RowCacheMiss
+ attribute:
+ - Count
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.db
+ type: ColumnFamilies
+ attribute:
+ DroppableTombstoneRatio:
+ alias: cassandra.db.droppable_tombstone_ratio
+ EOF
+
+ cached(:chef_run) do
+ ChefSpec::SoloRunner.new(step_into: ['datadog_monitor']) do |node|
+ node.automatic['languages'] = { python: { version: '2.7.2' } }
+
+ node.set['datadog'] = {
+ api_key: 'someapikey',
+ cassandra: {
+ version: 3,
+ instances: [
+ {
+ host: 'localhost',
+ port: 7199,
+ user: 'someuser',
+ password: 'somepass',
+ process_name_regex: '.*cassandra.*'
+ }
+ ]
+ }
+ }
+ end.converge(described_recipe)
+ end
+
+ subject { chef_run }
+
+ it_behaves_like 'datadog-agent'
+
+ it { is_expected.to include_recipe('datadog::dd-agent') }
+
+ it { is_expected.to add_datadog_monitor('cassandra') }
+
+ it 'renders expected YAML config file' do
+ expect(chef_run).to(render_file('/etc/dd-agent/conf.d/cassandra.yaml').with_content { |content|
+ expect(YAML.safe_load(content).to_json).to be_json_eql(YAML.safe_load(expected_yaml).to_json)
+ })
+ end
+ end
end

MODIFY
templates/default/cassandra.yaml.erb
templates/default/cassandra.yaml.erb
@@ -9,7 +9,439 @@ instances:
cassandra_aliasing: true
<% end -%>
-<% if @version == 2 %>
+<% if @version == 3 %>
+init_config:
+ # List of metrics to be collected by the integration
+ # Read http://docs.datadoghq.com/integrations/java/ to learn how to customize it
+ # Metrics for Cassandra 3.x
+ conf:
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ClientRequest
+ name:
+ - Latency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: DroppedMessage
+ name:
+ - Dropped
+ attribute:
+ - OneMinuteRate
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ThreadPools
+ scope:
+ - MutationStage
+ - CounterMutationStage
+ - ReadStage
+ - ViewMutationStage
+ name:
+ - PendingTasks
+ - CurrentlyBlockedTasks
+ path:
+ - request
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ThreadPools
+ scope:
+ - MemtableFlushWriter
+ - HintsDispatcher
+ - MemtablePostFlush
+ - MigrationStage
+ - MiscStage
+ - SecondaryIndexManagement
+ name:
+ - PendingTasks
+ - CurrentlyBlockedTasks
+ path:
+ - internal
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Storage
+ name:
+ - Load
+ - Exceptions
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ReadLatency
+ - WriteLatency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - 99thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - RangeLatency
+ - CasPrepareLatency
+ - CasProposeLatency
+ - CasCommitLatency
+ - ViewLockAcquireTime
+ - ViewReadTime
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - SSTablesPerReadHistogram
+ - TombstoneScannedHistogram
+ - WaitingOnFreeMemtableSpace
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ColUpdateTimeDeltaHistogram
+ attribute:
+ - Min
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - BloomFilterFalseRatio
+ - CompressionRatio
+ - KeyCacheHitRate
+ - LiveSSTableCount
+ - MaxPartitionSize
+ - MeanPartitionSize
+ - MeanRowSize
+ - MaxRowSize
+ - PendingCompactions
+ - SnapshotsSize
+ attribute:
+ - Value
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Table
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - CompactionBytesWritten
+ - BytesFlushed
+ - PendingFlushes
+ - LiveDiskSpaceUsed
+ - TotalDiskSpaceUsed
+ - RowCacheHitOutOfRange
+ - RowCacheHit
+ - RowCacheMiss
+ attribute:
+ - Count
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: Cache
+ scope: KeyCache
+ name:
+ - HitRate
+ attribute:
+ - Count
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: CommitLog
+ name:
+ - PendingTasks
+ - TotalCommitLogSize
+ attribute:
+ - Value
+ - include:
+ domain: org.apache.cassandra.db
+ type: Tables
+ attribute:
+ DroppableTombstoneRatio:
+ alias: cassandra.db.droppable_tombstone_ratio
+ # Young Gen Collectors (Minor Collections)
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: Copy
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: PS Scavenge
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: ParNew
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: G1 Young Generation
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.minor_collection_time
+ # Old Gen Collectors (Major collections)
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: MarkSweepCompact
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: PS MarkSweep
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: ConcurrentMarkSweep
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+ - include:
+ domain: java.lang
+ type: GarbageCollector
+ name: G1 Mixed Generation
+ attribute:
+ CollectionCount:
+ metric_type: counter
+ alias: jmx.gc.major_collection_count
+ CollectionTime:
+ metric_type: counter
+ alias: jmx.gc.major_collection_time
+
+ # Deprecated metrics for pre Cassandra 3.0 versions compatibility.
+ # If you are using cassandra 2, the metrics below will be used,
+ # otherwise they will be ignored.
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ReadLatency
+ - WriteLatency
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - 99thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - RangeLatency
+ - CasPrepareLatency
+ - CasProposeLatency
+ - CasCommitLatency
+ - ViewLockAcquireTime
+ - ViewReadTime
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ - OneMinuteRate
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - SSTablesPerReadHistogram
+ - TombstoneScannedHistogram
+ - WaitingOnFreeMemtableSpace
+ attribute:
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - ColUpdateTimeDeltaHistogram
+ attribute:
+ - Min
+ - 75thPercentile
+ - 95thPercentile
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - BloomFilterFalseRatio
+ - CompressionRatio
+ - KeyCacheHitRate
+ - LiveSSTableCount
+ - MaxPartitionSize
+ - MeanPartitionSize
+ - MeanRowSize
+ - MaxRowSize
+ - PendingCompactions
+ - SnapshotsSize
+ attribute:
+ - Value
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.metrics
+ type: ColumnFamily
+ bean_regex:
+ - .*keyspace=.*
+ name:
+ - PendingFlushes
+ - LiveDiskSpaceUsed
+ - TotalDiskSpaceUsed
+ - RowCacheHitOutOfRange
+ - RowCacheHit
+ - RowCacheMiss
+ attribute:
+ - Count
+ exclude:
+ keyspace:
+ - system
+ - system_auth
+ - system_distributed
+ - system_schema
+ - system_traces
+ - include:
+ domain: org.apache.cassandra.db
+ type: ColumnFamilies
+ attribute:
+ DroppableTombstoneRatio:
+ alias: cassandra.db.droppable_tombstone_ratio
+<% elsif @version == 2 %>
init_config:
# List of metrics to be collected by the integration
# Read http://docs.datadoghq.com/integrations/java/ to learn how to customize it

[cassandra] Add updated metrics for Cassandra 2 and 3.x (#516)

When the version attribute is set to 3. We don't update the metrics
when the version attribute is set to 2 to avoid changing the metrics
collected on existing Agent installs.