replaying entries of deleted ledgers would exhaust ledger cache.
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                 Key: BOOKKEEPER-198
                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-198
             Project: Bookkeeper
          Issue Type: Bug
            Reporter: Sijie Guo
            Assignee: Sijie Guo
             Fix For: 4.1.0


we found that replaying entries of deleted ledgers would exhaust ledger cache. 
then ledger cache would no clean page to grab, it would throw following 
exception.

{code}
java.util.NoSuchElementException
        at java.util.LinkedList.getFirst(LinkedList.java:109)
        at 
org.apache.bookkeeper.bookie.LedgerCacheImpl.grabCleanPage(LedgerCacheImpl.java:454)
        at 
org.apache.bookkeeper.bookie.LedgerCacheImpl.putEntryOffset(LedgerCacheImpl.java:165)
{code}

this issue is because bookie grabs a clean page but fail to updating page due 
to NoLedgerException, but bookie doesn't return this clean page back to ledger 
cache. so the ledger cache is exhausted, when new ledger want to grab a clean 
page, it failed to find available page.

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