How to use

notifySwitched

method

in

org.apache.cassandra.db.lifecycle.Tracker

/**
 * Switch the current memtable. This atomically appends a new memtable to the end of the list of active memtables,
 * returning the previously last memtable. It leaves the previous Memtable in the list of live memtables until
 * discarding(memtable) is called. These two methods must be synchronized/paired, i.e. m = switchMemtable
 * must be followed by discarding(m), they cannot be interleaved.
 *
 * @return the previously active memtable
 */
public Memtable switchMemtable(boolean truncating, Memtable newMemtable)
{
  Pair<View, View> result = apply(View.switchMemtable(newMemtable));
  if (truncating)
    notifyRenewed(newMemtable);
  else
    notifySwitched(result.left.getCurrentMemtable());
  return result.left.getCurrentMemtable();
}

/**
 * Switch the current memtable. This atomically appends a new memtable to the end of the list of active memtables,
 * returning the previously last memtable. It leaves the previous Memtable in the list of live memtables until
 * discarding(memtable) is called. These two methods must be synchronized/paired, i.e. m = switchMemtable
 * must be followed by discarding(m), they cannot be interleaved.
 *
 * @return the previously active memtable
 */
public Memtable switchMemtable(boolean truncating, Memtable newMemtable)
{
  Pair<View, View> result = apply(View.switchMemtable(newMemtable));
  if (truncating)
    notifyRenewed(newMemtable);
  else
    notifySwitched(result.left.getCurrentMemtable());
  return result.left.getCurrentMemtable();
}

/**
 * Switch the current memtable. This atomically appends a new memtable to the end of the list of active memtables,
 * returning the previously last memtable. It leaves the previous Memtable in the list of live memtables until
 * discarding(memtable) is called. These two methods must be synchronized/paired, i.e. m = switchMemtable
 * must be followed by discarding(m), they cannot be interleaved.
 *
 * @return the previously active memtable
 */
public Memtable switchMemtable(boolean truncating, Memtable newMemtable)
{
  Pair<View, View> result = apply(View.switchMemtable(newMemtable));
  if (truncating)
    notifyRenewed(newMemtable);
  else
    notifySwitched(result.left.getCurrentMemtable());
  return result.left.getCurrentMemtable();
}