[
https://issues.apache.org/jira/browse/CASSANDRA-11120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133120#comment-15133120
]
Ariel Weisberg edited comment on CASSANDRA-11120 at 2/4/16 10:01 PM:
---------------------------------------------------------------------
The path. Now with more line endings. The format of the output is "<field type>
<containing class name>.<field name>-<field value type>". The first value is
not in this format. It is a name string defined by the tidier.
It looks like {{SSTableReader$GlobalTidy}} has a path to
{{SSTableReader$InstanceTidy}}. It should not have a path to the object being
tidied ({{SSTableReader}}). The path is because {{readerMeterSyncFuture}} leads
out to places we would rather it didn't. I think we can add a WeakReference and
update the {{Ref.Visitor}} to ignore weak references. There is some trickiness
there because {{com.sun.rmi.transport.WeakRef}} extends
{{java.lang.ref.WeakReference}} to allow pinning/unpinning a weak reference by
storing an additional strong reference.
{noformat}
[/var/lib/cassandra/data/keyspace1/standard1-7cddd4c1cacc11e5aa69f375b464842d/ma-14-big
private java.util.concurrent.ScheduledFuture
org.apache.cassandra.io.sstable.format.SSTableReader$GlobalTidy.readMeterSyncFuture-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
final java.util.concurrent.ScheduledThreadPoolExecutor
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-java.util.concurrent.ScheduledThreadPoolExecutor
private final java.util.HashSet
java.util.concurrent.ThreadPoolExecutor.workers-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object
java.util.HashMap$Node.key-java.util.concurrent.ThreadPoolExecutor$Worker
final java.lang.Thread
java.util.concurrent.ThreadPoolExecutor$Worker.thread-java.lang.Thread
private java.lang.ThreadGroup java.lang.Thread.group-java.lang.ThreadGroup
private final java.lang.ThreadGroup
java.lang.ThreadGroup.parent-java.lang.ThreadGroup
java.lang.Thread[] java.lang.ThreadGroup.threads-[Ljava.lang.Thread;
java.lang.Thread[] java.lang.ThreadGroup.threads-java.lang.Thread
private java.lang.Runnable
java.lang.Thread.target-java.util.concurrent.ThreadPoolExecutor$Worker
final java.util.concurrent.ThreadPoolExecutor
java.util.concurrent.ThreadPoolExecutor$Worker.this$0-java.util.concurrent.ScheduledThreadPoolExecutor
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
private java.util.concurrent.Callable
java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter
final java.lang.Runnable
java.util.concurrent.Executors$RunnableAdapter.task-sun.rmi.transport.DGCImpl$1
final sun.rmi.transport.DGCImpl
sun.rmi.transport.DGCImpl$1.this$0-sun.rmi.transport.DGCImpl
private java.util.Map sun.rmi.transport.DGCImpl.leaseTable-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object
java.util.HashMap$Node.value-sun.rmi.transport.DGCImpl$LeaseInfo
java.util.Set sun.rmi.transport.DGCImpl$LeaseInfo.notifySet-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object java.util.HashMap$Node.key-sun.rmi.transport.Target
private final sun.rmi.transport.WeakRef
sun.rmi.transport.Target.weakImpl-sun.rmi.transport.WeakRef
private java.lang.Object
sun.rmi.transport.WeakRef.strongRef-javax.management.remote.rmi.RMIJRMPServerImpl
private final java.util.List
javax.management.remote.rmi.RMIServerImpl.clientList-java.util.ArrayList
transient java.lang.Object[]
java.util.ArrayList.elementData-[Ljava.lang.Object;
transient java.lang.Object[]
java.util.ArrayList.elementData-java.lang.ref.WeakReference
private java.lang.Object
java.lang.ref.Reference.referent-javax.management.remote.rmi.RMIConnectionImpl
private final javax.management.MBeanServer
javax.management.remote.rmi.RMIConnectionImpl.mbeanServer-com.sun.jmx.mbeanserver.JmxMBeanServer
private volatile javax.management.MBeanServer
com.sun.jmx.mbeanserver.JmxMBeanServer.mbsInterceptor-com.sun.jmx.interceptor.DefaultMBeanServerInterceptor
private final transient com.sun.jmx.mbeanserver.Repository
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.repository-com.sun.jmx.mbeanserver.Repository
private final java.util.Map
com.sun.jmx.mbeanserver.Repository.domainTb-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object java.util.HashMap$Node.value-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object
java.util.HashMap$Node.value-com.sun.jmx.mbeanserver.NamedObject
private final javax.management.DynamicMBean
com.sun.jmx.mbeanserver.NamedObject.object-com.sun.jmx.mbeanserver.StandardMBeanSupport
private final java.lang.Object
com.sun.jmx.mbeanserver.MBeanSupport.resource-org.apache.cassandra.db.ColumnFamilyStore
public final org.apache.cassandra.db.Keyspace
org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore
private final java.util.concurrent.ScheduledFuture
org.apache.cassandra.db.ColumnFamilyStore.latencyCalculator-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
final java.util.concurrent.ScheduledThreadPoolExecutor
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
private java.util.concurrent.Callable
java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter
final java.lang.Runnable
java.util.concurrent.Executors$RunnableAdapter.task-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable
private final java.lang.Runnable
org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.runnable-org.apache.cassandra.db.ColumnFamilyStore$3
final org.apache.cassandra.db.ColumnFamilyStore
org.apache.cassandra.db.ColumnFamilyStore$3.this$0-org.apache.cassandra.db.ColumnFamilyStore
public final org.apache.cassandra.db.Keyspace
org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore
private final org.apache.cassandra.db.lifecycle.Tracker
org.apache.cassandra.db.ColumnFamilyStore.data-org.apache.cassandra.db.lifecycle.Tracker
public final java.util.Collection
org.apache.cassandra.db.lifecycle.Tracker.subscribers-java.util.concurrent.CopyOnWriteArrayList
public final java.util.Collection
org.apache.cassandra.db.lifecycle.Tracker.subscribers-org.apache.cassandra.db.compaction.CompactionStrategyManager
private volatile org.apache.cassandra.db.compaction.AbstractCompactionStrategy
org.apache.cassandra.db.compaction.CompactionStrategyManager.repaired-org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
private final java.util.Set
org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.sstables-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object
java.util.HashMap$Node.key-org.apache.cassandra.io.sstable.format.big.BigTableReader
private final
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier
org.apache.cassandra.io.sstable.format.SSTableReader.tidy-org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier
private org.apache.cassandra.utils.concurrent.Ref
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier.globalRef-org.apache.cassandra.utils.concurrent.Ref]
{noformat}
was (Author: aweisberg):
The path. Now with more line endings. The format of the output is "<field type>
<containing class name>.<field name>-<field value type>". The first value is
not in this format. It is a name string defined by the tidier.
It looks like {{SSTableReader$GlobalTidy}} has a path to
{{SSTableReader$InstanceTidy}}. It should not have a path to the object being
tidied ({{SSTableReader}}). The path is because {{readerMeterSyncFuture}} leads
out to places we would rather it didn't. I think can add a WeakReference and
update the {{Ref.Visitor}} to ignore weak references. There is some trickiness
there because {{com.sun.rmi.transport.WeakRef}} extends
{{java.lang.ref.WeakReference}} to allow pinning/unpinning a weak reference by
storing an additional strong reference.
{noformat}
[/var/lib/cassandra/data/keyspace1/standard1-7cddd4c1cacc11e5aa69f375b464842d/ma-14-big
private java.util.concurrent.ScheduledFuture
org.apache.cassandra.io.sstable.format.SSTableReader$GlobalTidy.readMeterSyncFuture-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
final java.util.concurrent.ScheduledThreadPoolExecutor
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-java.util.concurrent.ScheduledThreadPoolExecutor
private final java.util.HashSet
java.util.concurrent.ThreadPoolExecutor.workers-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object
java.util.HashMap$Node.key-java.util.concurrent.ThreadPoolExecutor$Worker
final java.lang.Thread
java.util.concurrent.ThreadPoolExecutor$Worker.thread-java.lang.Thread
private java.lang.ThreadGroup java.lang.Thread.group-java.lang.ThreadGroup
private final java.lang.ThreadGroup
java.lang.ThreadGroup.parent-java.lang.ThreadGroup
java.lang.Thread[] java.lang.ThreadGroup.threads-[Ljava.lang.Thread;
java.lang.Thread[] java.lang.ThreadGroup.threads-java.lang.Thread
private java.lang.Runnable
java.lang.Thread.target-java.util.concurrent.ThreadPoolExecutor$Worker
final java.util.concurrent.ThreadPoolExecutor
java.util.concurrent.ThreadPoolExecutor$Worker.this$0-java.util.concurrent.ScheduledThreadPoolExecutor
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
private java.util.concurrent.Callable
java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter
final java.lang.Runnable
java.util.concurrent.Executors$RunnableAdapter.task-sun.rmi.transport.DGCImpl$1
final sun.rmi.transport.DGCImpl
sun.rmi.transport.DGCImpl$1.this$0-sun.rmi.transport.DGCImpl
private java.util.Map sun.rmi.transport.DGCImpl.leaseTable-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object
java.util.HashMap$Node.value-sun.rmi.transport.DGCImpl$LeaseInfo
java.util.Set sun.rmi.transport.DGCImpl$LeaseInfo.notifySet-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object java.util.HashMap$Node.key-sun.rmi.transport.Target
private final sun.rmi.transport.WeakRef
sun.rmi.transport.Target.weakImpl-sun.rmi.transport.WeakRef
private java.lang.Object
sun.rmi.transport.WeakRef.strongRef-javax.management.remote.rmi.RMIJRMPServerImpl
private final java.util.List
javax.management.remote.rmi.RMIServerImpl.clientList-java.util.ArrayList
transient java.lang.Object[]
java.util.ArrayList.elementData-[Ljava.lang.Object;
transient java.lang.Object[]
java.util.ArrayList.elementData-java.lang.ref.WeakReference
private java.lang.Object
java.lang.ref.Reference.referent-javax.management.remote.rmi.RMIConnectionImpl
private final javax.management.MBeanServer
javax.management.remote.rmi.RMIConnectionImpl.mbeanServer-com.sun.jmx.mbeanserver.JmxMBeanServer
private volatile javax.management.MBeanServer
com.sun.jmx.mbeanserver.JmxMBeanServer.mbsInterceptor-com.sun.jmx.interceptor.DefaultMBeanServerInterceptor
private final transient com.sun.jmx.mbeanserver.Repository
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.repository-com.sun.jmx.mbeanserver.Repository
private final java.util.Map
com.sun.jmx.mbeanserver.Repository.domainTb-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object java.util.HashMap$Node.value-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
java.lang.Object
java.util.HashMap$Node.value-com.sun.jmx.mbeanserver.NamedObject
private final javax.management.DynamicMBean
com.sun.jmx.mbeanserver.NamedObject.object-com.sun.jmx.mbeanserver.StandardMBeanSupport
private final java.lang.Object
com.sun.jmx.mbeanserver.MBeanSupport.resource-org.apache.cassandra.db.ColumnFamilyStore
public final org.apache.cassandra.db.Keyspace
org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore
private final java.util.concurrent.ScheduledFuture
org.apache.cassandra.db.ColumnFamilyStore.latencyCalculator-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
final java.util.concurrent.ScheduledThreadPoolExecutor
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue
private final java.util.concurrent.BlockingQueue
java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask
private java.util.concurrent.Callable
java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter
final java.lang.Runnable
java.util.concurrent.Executors$RunnableAdapter.task-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable
private final java.lang.Runnable
org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.runnable-org.apache.cassandra.db.ColumnFamilyStore$3
final org.apache.cassandra.db.ColumnFamilyStore
org.apache.cassandra.db.ColumnFamilyStore$3.this$0-org.apache.cassandra.db.ColumnFamilyStore
public final org.apache.cassandra.db.Keyspace
org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap
private final java.util.concurrent.ConcurrentMap
org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore
private final org.apache.cassandra.db.lifecycle.Tracker
org.apache.cassandra.db.ColumnFamilyStore.data-org.apache.cassandra.db.lifecycle.Tracker
public final java.util.Collection
org.apache.cassandra.db.lifecycle.Tracker.subscribers-java.util.concurrent.CopyOnWriteArrayList
public final java.util.Collection
org.apache.cassandra.db.lifecycle.Tracker.subscribers-org.apache.cassandra.db.compaction.CompactionStrategyManager
private volatile org.apache.cassandra.db.compaction.AbstractCompactionStrategy
org.apache.cassandra.db.compaction.CompactionStrategyManager.repaired-org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
private final java.util.Set
org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.sstables-java.util.HashSet
private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap
transient java.util.HashMap$Node[]
java.util.HashMap.table-[Ljava.util.HashMap$Node;
transient java.util.HashMap$Node[]
java.util.HashMap.table-java.util.HashMap$Node
final java.lang.Object
java.util.HashMap$Node.key-org.apache.cassandra.io.sstable.format.big.BigTableReader
private final
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier
org.apache.cassandra.io.sstable.format.SSTableReader.tidy-org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier
private org.apache.cassandra.utils.concurrent.Ref
org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier.globalRef-org.apache.cassandra.utils.concurrent.Ref]
{noformat}
> Leak Detected while bringing nodes up and down when under stress.
> -----------------------------------------------------------------
>
> Key: CASSANDRA-11120
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11120
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Jeremiah Jordan
> Priority: Minor
> Fix For: 3.0.x
>
>
> So after CASSANDRA-10688 has been fixed I'm able to reproduce some leaks
> consistently with my stress test suite that is doing repairs/stress/bringing
> nodes up and down.
> One such example:
> {noformat}
> ERROR [Strong-Reference-Leak-Detector:1] 2016-02-03 23:32:38,827
> NoSpamLogger.java:97 - Strong self-ref loop detected
> [/var/lib/cassandra/data/keyspace1/standard1-7cddd4c1cacc11e5aa69f375b464842d/ma-14-big,
> private java.util.concurrent.ScheduledFuture
> org.apache.cassandra.io.sstable.format.SSTableReader$GlobalTidy.readMeterSyncFuture-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask,
> final java.util.concurrent.ScheduledThreadPoolExecutor
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-java.util.concurrent.ScheduledThreadPoolExecutor,
> private final java.util.HashSet
> java.util.concurrent.ThreadPoolExecutor.workers-java.util.HashSet, private
> transient java.util.HashMap java.util.HashSet.map-java.util.HashMap,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-[Ljava.util.HashMap$Node;, transient
> java.util.HashMap$Node[] java.util.HashMap.table-java.util.HashMap$Node,
> final java.lang.Object
> java.util.HashMap$Node.key-java.util.concurrent.ThreadPoolExecutor$Worker,
> final java.lang.Thread
> java.util.concurrent.ThreadPoolExecutor$Worker.thread-java.lang.Thread,
> private java.lang.ThreadGroup java.lang.Thread.group-java.lang.ThreadGroup,
> private final java.lang.ThreadGroup
> java.lang.ThreadGroup.parent-java.lang.ThreadGroup, java.lang.Thread[]
> java.lang.ThreadGroup.threads-[Ljava.lang.Thread;, java.lang.Thread[]
> java.lang.ThreadGroup.threads-java.lang.Thread, private java.lang.Runnable
> java.lang.Thread.target-java.util.concurrent.ThreadPoolExecutor$Worker, final
> java.util.concurrent.ThreadPoolExecutor
> java.util.concurrent.ThreadPoolExecutor$Worker.this$0-java.util.concurrent.ScheduledThreadPoolExecutor,
> private final java.util.concurrent.BlockingQueue
> java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue,
> private final java.util.concurrent.BlockingQueue
> java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask,
> private java.util.concurrent.Callable
> java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter,
> final java.lang.Runnable
> java.util.concurrent.Executors$RunnableAdapter.task-sun.rmi.transport.DGCImpl$1,
> final sun.rmi.transport.DGCImpl
> sun.rmi.transport.DGCImpl$1.this$0-sun.rmi.transport.DGCImpl, private
> java.util.Map sun.rmi.transport.DGCImpl.leaseTable-java.util.HashMap,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-[Ljava.util.HashMap$Node;, transient
> java.util.HashMap$Node[] java.util.HashMap.table-java.util.HashMap$Node,
> java.lang.Object
> java.util.HashMap$Node.value-sun.rmi.transport.DGCImpl$LeaseInfo,
> java.util.Set
> sun.rmi.transport.DGCImpl$LeaseInfo.notifySet-java.util.HashSet, private
> transient java.util.HashMap java.util.HashSet.map-java.util.HashMap,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-[Ljava.util.HashMap$Node;, transient
> java.util.HashMap$Node[] java.util.HashMap.table-java.util.HashMap$Node,
> final java.lang.Object java.util.HashMap$Node.key-sun.rmi.transport.Target,
> private final sun.rmi.transport.WeakRef
> sun.rmi.transport.Target.weakImpl-sun.rmi.transport.WeakRef, private
> java.lang.Object
> sun.rmi.transport.WeakRef.strongRef-javax.management.remote.rmi.RMIJRMPServerImpl,
> private final java.util.List
> javax.management.remote.rmi.RMIServerImpl.clientList-java.util.ArrayList,
> transient java.lang.Object[]
> java.util.ArrayList.elementData-[Ljava.lang.Object;, transient
> java.lang.Object[]
> java.util.ArrayList.elementData-java.lang.ref.WeakReference, private
> java.lang.Object
> java.lang.ref.Reference.referent-javax.management.remote.rmi.RMIConnectionImpl,
> private final javax.management.MBeanServer
> javax.management.remote.rmi.RMIConnectionImpl.mbeanServer-com.sun.jmx.mbeanserver.JmxMBeanServer,
> private volatile javax.management.MBeanServer
> com.sun.jmx.mbeanserver.JmxMBeanServer.mbsInterceptor-com.sun.jmx.interceptor.DefaultMBeanServerInterceptor,
> private final transient com.sun.jmx.mbeanserver.Repository
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.repository-com.sun.jmx.mbeanserver.Repository,
> private final java.util.Map
> com.sun.jmx.mbeanserver.Repository.domainTb-java.util.HashMap, transient
> java.util.HashMap$Node[] java.util.HashMap.table-[Ljava.util.HashMap$Node;,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-java.util.HashMap$Node, java.lang.Object
> java.util.HashMap$Node.value-java.util.HashMap, transient
> java.util.HashMap$Node[] java.util.HashMap.table-[Ljava.util.HashMap$Node;,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-java.util.HashMap$Node, java.lang.Object
> java.util.HashMap$Node.value-com.sun.jmx.mbeanserver.NamedObject, private
> final javax.management.DynamicMBean
> com.sun.jmx.mbeanserver.NamedObject.object-com.sun.jmx.mbeanserver.StandardMBeanSupport,
> private final java.lang.Object
> com.sun.jmx.mbeanserver.MBeanSupport.resource-org.apache.cassandra.db.ColumnFamilyStore,
> public final org.apache.cassandra.db.Keyspace
> org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace,
> private final java.util.concurrent.ConcurrentMap
> org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap,
> private final java.util.concurrent.ConcurrentMap
> org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore,
> private final java.util.concurrent.ScheduledFuture
> org.apache.cassandra.db.ColumnFamilyStore.latencyCalculator-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask,
> final java.util.concurrent.ScheduledThreadPoolExecutor
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.this$0-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor,
> private final java.util.concurrent.BlockingQueue
> java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue,
> private final java.util.concurrent.BlockingQueue
> java.util.concurrent.ThreadPoolExecutor.workQueue-java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask,
> private java.util.concurrent.Callable
> java.util.concurrent.FutureTask.callable-java.util.concurrent.Executors$RunnableAdapter,
> final java.lang.Runnable
> java.util.concurrent.Executors$RunnableAdapter.task-org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable,
> private final java.lang.Runnable
> org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.runnable-org.apache.cassandra.db.ColumnFamilyStore$3,
> final org.apache.cassandra.db.ColumnFamilyStore
> org.apache.cassandra.db.ColumnFamilyStore$3.this$0-org.apache.cassandra.db.ColumnFamilyStore,
> public final org.apache.cassandra.db.Keyspace
> org.apache.cassandra.db.ColumnFamilyStore.keyspace-org.apache.cassandra.db.Keyspace,
> private final java.util.concurrent.ConcurrentMap
> org.apache.cassandra.db.Keyspace.columnFamilyStores-java.util.concurrent.ConcurrentHashMap,
> private final java.util.concurrent.ConcurrentMap
> org.apache.cassandra.db.Keyspace.columnFamilyStores-org.apache.cassandra.db.ColumnFamilyStore,
> private final org.apache.cassandra.db.lifecycle.Tracker
> org.apache.cassandra.db.ColumnFamilyStore.data-org.apache.cassandra.db.lifecycle.Tracker,
> public final java.util.Collection
> org.apache.cassandra.db.lifecycle.Tracker.subscribers-java.util.concurrent.CopyOnWriteArrayList,
> public final java.util.Collection
> org.apache.cassandra.db.lifecycle.Tracker.subscribers-org.apache.cassandra.db.compaction.CompactionStrategyManager,
> private volatile
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy
> org.apache.cassandra.db.compaction.CompactionStrategyManager.repaired-org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy,
> private final java.util.Set
> org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.sstables-java.util.HashSet,
> private transient java.util.HashMap java.util.HashSet.map-java.util.HashMap,
> transient java.util.HashMap$Node[]
> java.util.HashMap.table-[Ljava.util.HashMap$Node;, transient
> java.util.HashMap$Node[] java.util.HashMap.table-java.util.HashMap$Node,
> final java.lang.Object
> java.util.HashMap$Node.key-org.apache.cassandra.io.sstable.format.big.BigTableReader,
> private final
> org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier
> org.apache.cassandra.io.sstable.format.SSTableReader.tidy-org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier,
> private org.apache.cassandra.utils.concurrent.Ref
> org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier.globalRef-org.apache.cassandra.utils.concurrent.Ref]
> {noformat}
> CC [~benedict]
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