1. 06 Jan, 2012 1 commit
  2. 20 Dec, 2011 1 commit
  3. 26 Oct, 2011 2 commits
  4. 25 Oct, 2011 1 commit
  5. 17 Oct, 2011 1 commit
  6. 13 Oct, 2011 1 commit
  7. 11 Oct, 2011 3 commits
    • Julien Muchembled's avatar
      Fix protocol and DB schema so that storages can handle transactions of any size · d5c469be
      Julien Muchembled authored
      - Change protocol to use SHA1 for all checksums:
        - Use SHA1 instead of CRC32 for data checksums.
        - Use SHA1 instead of MD5 for replication.
      
      - Change DatabaseManager API so that backends can store raw data separately from
        object metadata:
        - When processing AskStoreObject, call the backend to store the data
          immediately, instead of keeping it in RAM or in the temporary object table.
          Data is then referenced only by its checksum.
          Without such change, the storage could fail to store the transaction due to
          lack of RAM, or it could make tpc_finish step very slow.
        - Backends have to store data in a separate space, and remove entries as soon
          as they get unreferenced. So they must have an index of checksums in object
          metadata space. A new '_uncommitted_data' backend attribute keeps references
          of uncommitted data.
        - New methods: _pruneData, _storeData, storeData, unlockData
        - MySQL: change vertical partitioning of 'obj' by having data in a separate
          'data' table instead of using a shortened 'obj_short' table.
        - BTree: data is moved from '_obj' to a new '_data' btree.
      
      - Undo is optimized so that backpointers are not required anymore to fetch data:
        - The checksum of an object is None only when creation is undone.
        - Removed DatabaseManager methods: _getObjectData, _getDataTIDFromData
        - DatabaseManager: move some code from _getDataTID to findUndoTID so that
          _getDataTID only has what's specific to backend.
      
      - Removed because already covered by ZODB tests:
        - neo.tests.storage.testStorageDBTests.StorageDBTests.test__getDataTID
        - neo.tests.storage.testStorageDBTests.StorageDBTests.test__getDataTIDFromData
      d5c469be
    • Julien Muchembled's avatar
      Allow NEO to store empty values · d90c5b83
      Julien Muchembled authored
      This changes how NEO stores undo information
      and how it is transmitted on the network.
      d90c5b83
    • Julien Muchembled's avatar
      btree: fix missing u64 oid conversion in deleteTransaction · 03bf302a
      Julien Muchembled authored
      Also clean up deleteObject.
      03bf302a
  8. 06 Oct, 2011 1 commit
  9. 03 Oct, 2011 1 commit
  10. 30 Sep, 2011 1 commit
  11. 29 Sep, 2011 4 commits
  12. 24 Sep, 2011 1 commit
    • Julien Muchembled's avatar
      tests: fix occasional deadlock when a threaded unit test ends · e96e8f0b
      Julien Muchembled authored
      During 'NEOCluster.stop', there's often 1 'Serialized.background()' call too
      many, and when it removed the last lock of the queue, another thread would hang
      if was sleeping between 'q.put(lock)' and 'q.get().release()'.
      
      An easy way to reproduce the bug was to add:
          if cls.pending is None:
              time.sleep(.01)
      just before 'q.get().release()'
      e96e8f0b
  13. 16 Sep, 2011 2 commits
  14. 15 Sep, 2011 3 commits
  15. 14 Sep, 2011 2 commits
  16. 13 Sep, 2011 1 commit
  17. 09 Sep, 2011 1 commit
  18. 08 Sep, 2011 6 commits
  19. 07 Sep, 2011 4 commits
  20. 06 Sep, 2011 2 commits
  21. 05 Sep, 2011 1 commit