https://cassandra.apache.org: The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
  • Andres de la Peña
  • Avinash Lakshman
  • Aleksey Yeschenko
  • Aaron Morton
  • Ariel Weisberg
  • Blake Eggleston
  • Benedict Elliott Smith
  • Benjamin Lerer
  • Branimir Lambov
  • Brandon Williams
  • Carl Yeksigian
  • David Brosiusd
  • Dikang Gu
  • Eric Evans
  • Gary Dusbabek
  • Chris Goffinet
  • Alex Petrov
  • Laine Jaakko Olavi
  • T Jake Luciani
  • Jason Brown
  • Jonathan Ellis
  • Jake Farrell
  • Jeff Jirsa
  • Joel Knighton
  • Josh McKenzie
  • Johan Oskarsson
  • Jun Rao
  • Jay Zhuang
  • Sankalp Kohli
  • Marcus Eriksson
  • Michael Semb Wever
  • Mikhail Stepura
  • Michael Shuler
  • Paulo Motta
  • Prashant Malik
  • Robert Stupp
  • Peter Schuller
  • Sam Tunnicliffe
  • Sylvain Lebresne
  • Stefania Alborghetti
  • Tyler Hobbs
  • Vijay Parthasarathy
  • Pavel Yaskevich
  • Yuki Morishita
  • Nate McCall 
public final class org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator
  super_class: java.lang.Object
{
  private final org.apache.cassandra.utils.memory.MemtablePool$SubPool parent;
    descriptor: Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private volatile long owns;
    descriptor: J
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  private volatile long reclaiming;
    descriptor: J
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  private static final java.util.concurrent.atomic.AtomicLongFieldUpdater<org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator> ownsUpdater;
    descriptor: Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/concurrent/atomic/AtomicLongFieldUpdater<Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;>;

  private static final java.util.concurrent.atomic.AtomicLongFieldUpdater<org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator> reclaimingUpdater;
    descriptor: Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/concurrent/atomic/AtomicLongFieldUpdater<Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;>;

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 105
            ldc Lorg/apache/cassandra/utils/memory/MemtableAllocator;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.$assertionsDisabled:Z
         3: .line 214
            ldc Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            ldc "owns"
            invokestatic java.util.concurrent.atomic.AtomicLongFieldUpdater.newUpdater:(Ljava/lang/Class;Ljava/lang/String;)Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            putstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.ownsUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
         4: .line 215
            ldc Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            ldc "reclaiming"
            invokestatic java.util.concurrent.atomic.AtomicLongFieldUpdater.newUpdater:(Ljava/lang/Class;Ljava/lang/String;)Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            putstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.reclaimingUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(org.apache.cassandra.utils.memory.MemtablePool$SubPool);
    descriptor: (Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // org.apache.cassandra.utils.memory.MemtablePool$SubPool parent
         0: .line 116
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 118
            aload 0 /* this */
            aload 1 /* parent */
            putfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
         2: .line 119
            return
        end local 1 // org.apache.cassandra.utils.memory.MemtablePool$SubPool parent
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0    this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0    3     1  parent  Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
    MethodParameters:
        Name  Flags
      parent  

  void releaseAll();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
         0: .line 125
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.ownsUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lconst_0
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.getAndSet:(Ljava/lang/Object;J)J
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.released:(J)V
         1: .line 126
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.reclaimingUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lconst_0
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.getAndSet:(Ljava/lang/Object;J)J
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.reclaimed:(J)V
         2: .line 127
            return
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;

  public void adjust(long, org.apache.cassandra.utils.concurrent.OpOrder$Group);
    descriptor: (JLorg/apache/cassandra/utils/concurrent/OpOrder$Group;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // long size
        start local 3 // org.apache.cassandra.utils.concurrent.OpOrder$Group opGroup
         0: .line 132
            lload 1 /* size */
            lconst_0
            lcmp
            ifgt 2
         1: .line 133
            aload 0 /* this */
            lload 1 /* size */
            lneg
            invokevirtual org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.released:(J)V
            goto 3
         2: .line 135
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            lload 1 /* size */
            aload 3 /* opGroup */
            invokevirtual org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.allocate:(JLorg/apache/cassandra/utils/concurrent/OpOrder$Group;)V
         3: .line 136
      StackMap locals:
      StackMap stack:
            return
        end local 3 // org.apache.cassandra.utils.concurrent.OpOrder$Group opGroup
        end local 1 // long size
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0    4     1     size  J
            0    4     3  opGroup  Lorg/apache/cassandra/utils/concurrent/OpOrder$Group;
    MethodParameters:
         Name  Flags
      size     
      opGroup  

  public void allocate(long, org.apache.cassandra.utils.concurrent.OpOrder$Group);
    descriptor: (JLorg/apache/cassandra/utils/concurrent/OpOrder$Group;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=6, args_size=3
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // long size
        start local 3 // org.apache.cassandra.utils.concurrent.OpOrder$Group opGroup
         0: .line 141
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.$assertionsDisabled:Z
            ifne 1
            lload 1 /* size */
            lconst_0
            lcmp
            ifge 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 145
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.tryAllocate:(J)Z
            ifeq 4
         2: .line 147
            aload 0 /* this */
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.acquired:(J)V
         3: .line 148
            return
         4: .line 150
      StackMap locals:
      StackMap stack:
            aload 3 /* opGroup */
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.hasRoom:()Lorg/apache/cassandra/utils/concurrent/WaitQueue;
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.blockedTimerContext:()Lcom/codahale/metrics/Timer$Context;
            invokevirtual org.apache.cassandra.utils.concurrent.WaitQueue.register:(Lcom/codahale/metrics/Timer$Context;)Lorg/apache/cassandra/utils/concurrent/WaitQueue$Signal;
            invokevirtual org.apache.cassandra.utils.concurrent.OpOrder$Group.isBlockingSignal:(Lorg/apache/cassandra/utils/concurrent/WaitQueue$Signal;)Lorg/apache/cassandra/utils/concurrent/WaitQueue$Signal;
            astore 4 /* signal */
        start local 4 // org.apache.cassandra.utils.concurrent.WaitQueue$Signal signal
         5: .line 151
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.tryAllocate:(J)Z
            istore 5 /* allocated */
        start local 5 // boolean allocated
         6: .line 152
            iload 5 /* allocated */
            ifne 7
            aload 3 /* opGroup */
            invokevirtual org.apache.cassandra.utils.concurrent.OpOrder$Group.isBlocking:()Z
            ifeq 12
         7: .line 154
      StackMap locals: org.apache.cassandra.utils.concurrent.WaitQueue$Signal int
      StackMap stack:
            aload 4 /* signal */
            invokeinterface org.apache.cassandra.utils.concurrent.WaitQueue$Signal.cancel:()V
         8: .line 155
            iload 5 /* allocated */
            ifeq 10
         9: .line 156
            aload 0 /* this */
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.acquired:(J)V
            goto 11
        10: .line 158
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.allocated:(J)V
        11: .line 159
      StackMap locals:
      StackMap stack:
            return
        12: .line 162
      StackMap locals:
      StackMap stack:
            aload 4 /* signal */
            invokeinterface org.apache.cassandra.utils.concurrent.WaitQueue$Signal.awaitUninterruptibly:()V
        end local 5 // boolean allocated
        end local 4 // org.apache.cassandra.utils.concurrent.WaitQueue$Signal signal
        13: .line 143
            goto 1
        end local 3 // org.apache.cassandra.utils.concurrent.OpOrder$Group opGroup
        end local 1 // long size
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   14     0       this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0   14     1       size  J
            0   14     3    opGroup  Lorg/apache/cassandra/utils/concurrent/OpOrder$Group;
            5   13     4     signal  Lorg/apache/cassandra/utils/concurrent/WaitQueue$Signal;
            6   13     5  allocated  Z
    MethodParameters:
         Name  Flags
      size     
      opGroup  

  private void allocated(long);
    descriptor: (J)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // long size
         0: .line 169
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.allocated:(J)V
         1: .line 170
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.ownsUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lload 1 /* size */
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.addAndGet:(Ljava/lang/Object;J)J
            pop2
         2: .line 171
            return
        end local 1 // long size
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0    3     1  size  J
    MethodParameters:
      Name  Flags
      size  

  private void acquired(long);
    descriptor: (J)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // long size
         0: .line 176
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.acquired:(J)V
         1: .line 177
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.ownsUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lload 1 /* size */
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.addAndGet:(Ljava/lang/Object;J)J
            pop2
         2: .line 178
            return
        end local 1 // long size
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0    3     1  size  J
    MethodParameters:
      Name  Flags
      size  

  void released(long);
    descriptor: (J)V
    flags: (0x0000) 
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
        start local 1 // long size
         0: .line 182
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* size */
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.released:(J)V
         1: .line 183
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.ownsUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lload 1 /* size */
            lneg
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.addAndGet:(Ljava/lang/Object;J)J
            pop2
         2: .line 184
            return
        end local 1 // long size
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            0    3     1  size  J
    MethodParameters:
      Name  Flags
      size  

  void markAllReclaiming();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=6, locals=5, args_size=1
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
         0: .line 191
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.owns:J
            lstore 1 /* cur */
        start local 1 // long cur
         1: .line 192
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.reclaiming:J
            lstore 3 /* prev */
        start local 3 // long prev
         2: .line 193
            getstatic org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.reclaimingUpdater:Ljava/util/concurrent/atomic/AtomicLongFieldUpdater;
            aload 0 /* this */
            lload 3 /* prev */
            lload 1 /* cur */
            invokevirtual java.util.concurrent.atomic.AtomicLongFieldUpdater.compareAndSet:(Ljava/lang/Object;JJ)Z
            ifne 4
         3: .line 194
            goto 0
         4: .line 196
      StackMap locals: long long
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            lload 1 /* cur */
            lload 3 /* prev */
            lsub
            invokevirtual org.apache.cassandra.utils.memory.MemtablePool$SubPool.reclaiming:(J)V
         5: .line 197
            return
        end local 3 // long prev
        end local 1 // long cur
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            1    6     1   cur  J
            2    6     3  prev  J

  public long owns();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
         0: .line 203
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.owns:J
            lreturn
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;

  public float ownershipRatio();
    descriptor: ()F
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
         0: .line 208
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.owns:J
            l2f
            aload 0 /* this */
            getfield org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.parent:Lorg/apache/cassandra/utils/memory/MemtablePool$SubPool;
            getfield org.apache.cassandra.utils.memory.MemtablePool$SubPool.limit:J
            l2f
            fdiv
            fstore 1 /* r */
        start local 1 // float r
         1: .line 209
            fload 1 /* r */
            invokestatic java.lang.Float.isNaN:(F)Z
            ifeq 3
         2: .line 210
            fconst_0
            freturn
         3: .line 211
      StackMap locals: float
      StackMap stack:
            fload 1 /* r */
            freturn
        end local 1 // float r
        end local 0 // org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/apache/cassandra/utils/memory/MemtableAllocator$SubAllocator;
            1    4     1     r  F
}
SourceFile: "MemtableAllocator.java"
NestHost: org.apache.cassandra.utils.memory.MemtableAllocator
InnerClasses:
  public Context = com.codahale.metrics.Timer$Context of com.codahale.metrics.Timer
  public final Group = org.apache.cassandra.utils.concurrent.OpOrder$Group of org.apache.cassandra.utils.concurrent.OpOrder
  public abstract Signal = org.apache.cassandra.utils.concurrent.WaitQueue$Signal of org.apache.cassandra.utils.concurrent.WaitQueue
  public final SubAllocator = org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator of org.apache.cassandra.utils.memory.MemtableAllocator
  public SubPool = org.apache.cassandra.utils.memory.MemtablePool$SubPool of org.apache.cassandra.utils.memory.MemtablePool