Ejemplo n.º 1
0
 /**
  * return the current version of the provided reader, whether or not it is visible or staged; i.e.
  * returns the first version present by testing staged, logged and originals in order.
  */
 public SSTableReader current(SSTableReader reader) {
   Set<SSTableReader> container;
   if (staged.contains(reader))
     container = staged.update.contains(reader) ? staged.update : staged.obsolete;
   else if (logged.contains(reader))
     container = logged.update.contains(reader) ? logged.update : logged.obsolete;
   else if (originals.contains(reader)) container = originals;
   else throw new AssertionError();
   return select(reader, container);
 }
Ejemplo n.º 2
0
 /** remove the reader from the set we're modifying */
 public void cancel(SSTableReader cancel) {
   logger.debug("Cancelling {} from transaction", cancel);
   assert originals.contains(cancel)
       : "may only cancel a reader in the 'original' set: " + cancel + " vs " + originals;
   assert !(staged.contains(cancel) || logged.contains(cancel))
       : "may only cancel a reader that has not been updated or obsoleted in this transaction: "
           + cancel;
   originals.remove(cancel);
   marked.remove(cancel);
   maybeFail(unmarkCompacting(singleton(cancel), null));
 }