mattisonchao commented on PR #22034:
URL: https://github.com/apache/pulsar/pull/22034#issuecomment-1952382371

   Hi, guys.
   
   I can't say the new method has problems so far. I just worry that we have 
broken the lazy ledger creation logic. 
   
   How about changing the `rollCurrentLedgerIfFull` method to be as follows? 
The schedule rollover checker will roll the current closed ledger after 
`maximumRolloverTimeMs`
   
   ```java
      public void rollCurrentLedgerIfFull() {
           log.info("[{}] Start checking if current ledger is full", name);
           if (currentLedgerEntries <= 0 || !currentLedgerIsFull()) {
               return;
           }
           if(STATE_UPDATER.compareAndSet(this, State.LedgerOpened, 
State.ClosingLedger)) {
               currentLedger.asyncClose(new AsyncCallback.CloseCallback() {
                   @Override
                   public void closeComplete(int rc, LedgerHandle lh, Object o) 
{
                       checkArgument(currentLedger.getId() == lh.getId(), 
"ledgerId %s doesn't match with "
                                                                          + 
"acked ledgerId %s", currentLedger.getId(), lh.getId());
   
                       if (rc == BKException.Code.OK) {
                           if (log.isDebugEnabled()) {
                               log.debug("[{}] Successfully closed ledger {}, 
trigger by rollover full ledger",
                                       name, lh.getId());
                           }
                       } else {
                           log.warn("[{}] Error when closing ledger {}, trigger 
by rollover full ledger, Status={}",
                                   name, lh.getId(), 
BKException.getMessage(rc));
                       }
   
                       ledgerClosed(lh);
                       createLedgerAfterClosed();
                   }
               }, null);
           } else if (STATE_UPDATER.get(this) == State.ClosedLedger) {
               createLedgerAfterClosed();
           }
       }
   ```
   
   


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