[GitHub] [bookkeeper] Shoothzj opened a new issue #2770: In class SortedLedgerStorage's method ledgerExists, why don't we simplely return false

[GitBox <gi...@apache.org>]

Shoothzj opened a new issue #2770:
URL: https://github.com/apache/bookkeeper/issues/2770


   Class SortedLedgerStorage, method ledgerExists
   ```java
   @Override
       public boolean ledgerExists(long ledgerId) throws IOException {
           // Done this way because checking the skip list is an O(logN) operation compared to
           // the O(1) for the ledgerCache.
           if (!interleavedLedgerStorage.ledgerExists(ledgerId)) {
               EntryKeyValue kv = memTable.getLastEntry(ledgerId);
               if (null == kv) {
                   return interleavedLedgerStorage.ledgerExists(ledgerId);
               }
           }
           return true;
       }
   ```
   I want to know why calculate ledgerExists() two times? Thanks


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