[GitHub] athanatos opened a new issue #865: LongHierarchicalLedgerManager: fix race with concurrent updates in initialize()

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

athanatos opened a new issue #865: LongHierarchicalLedgerManager: fix race with concurrent updates in initialize()
URL: https://github.com/apache/bookkeeper/issues/865
 
 
   LongHierarchicalLedgerRangeIterator.initialize() can erroneously exit with iteratorDone if the lexicographically first path in zk has fewer than 4 levels.  This can happen for a few reasons including a case where a client creating a ledger on that path crashed during the zk updates or the iterator.hasNext() call simply raced with an in-progress node creation or removal.  ScanAndCompareGarbageCollector is hasNext() returns false will delete all ledgers on the bookie, so this is a fairly serious bug.
   

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