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Posted to issues@bookkeeper.apache.org by GitBox <gi...@apache.org> on 2018/07/05 22:49:56 UTC

[GitHub] reddycharan opened a new issue #1534: Absence of flushEntriesLocationsIndex in EntryLogCompactor can lead to data corruption/loss

reddycharan opened a new issue #1534: Absence of flushEntriesLocationsIndex in EntryLogCompactor can lead to data corruption/loss 
URL: https://github.com/apache/bookkeeper/issues/1534
 
 
   **BUG REPORT**
   
   1. Please describe the issue you observed:
   
   EntryLogComparator.CompactionScannerFactory.flush just calls "ledgerStorage.updateEntriesLocations(offsets);" instead of "ledgerStorage.flushEntriesLocationsIndex()". 
   
   This was broken with this change - https://github.com/apache/bookkeeper/commit/d32010f5fcc6a040a56dc8b983cc14d107cff2df#diff-ca4e05e22214ba76f892216124975514L203.
   
   Because of this EntryLogCompactor.compact method would remove compacted entryLog without updated offsets/locations getting flushed/persisted/fsynced to LedgerCache (Index/FileInfo files). This could lead to data corruption/loss if Bookie is broughtdown/killed before those updated offsets/locations are flushed/persisted/fsynced.
   
   
   

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