finally的执行顺序

synchronized DocumentsWriterPerThread doAfterDocument(ThreadState perThread,
      boolean isUpdate) {
    try {
      commitPerThreadBytes(perThread);
      if (!perThread.flushPending) {
        if (isUpdate) {
          flushPolicy.onUpdate(this, perThread);
        } else {//如果当前线程没有达到刷新状态,重新计算是否达到刷新的阈值.重新计算后,如果达到刷新状态, 则将ThreadState放入到DocumentsWriterFlushControl的FlushPending队列中
          flushPolicy.onInsert(this, perThread);
        }
        if (!perThread.flushPending && perThread.bytesUsed > hardMaxBytesPerDWPT) {
          // Safety check to prevent a single DWPT exceeding its RAM limit. This
          // is super important since we can not address more than 2048 MB per DWPT
          setFlushPending(perThread);
        }
      }
      final DocumentsWriterPerThread flushingDWPT;
      if (fullFlush) {
        if (perThread.flushPending) {
          checkoutAndBlock(perThread);
          flushingDWPT = nextPendingFlush();
        } else {
          flushingDWPT = null;
        }
      } else {
       flushingDWPT = tryCheckoutForFlush(perThread);
      }
      return flushingDWPT;
    } finally {
      boolean stalled = updateStallState();
      assert assertNumDocsSinceStalled(stalled) && assertMemory();
    }
  }

最后的finally中的语句执行完成后再执行return方法