private void checkForFlusherThreadTermination() {
    if (flusherThreadTerminated) {
      String message =
          "Could not schedule asynchronous write because the flusher thread had been terminated.";
      if (isClosing()) {
        // for bug 41305
        throw cache.getCacheClosedException(message, null);
      } else {
        throw new DiskAccessException(message, this);
      }

    }
  }
Get serialized form of data off the disk

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java