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  1. 26 Oct, 2011 1 commit
  2. 11 Oct, 2011 1 commit
    • 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
  3. 02 May, 2011 1 commit
  4. 22 Mar, 2011 1 commit
  5. 25 Feb, 2011 1 commit
    • Olivier Cros's avatar
      Implementing ipv6 on neo · 0cdbf0ea
      Olivier Cros authored
      In order to synchronise neo with slapos, it has to work perfectly with ipv4
      and ipv6. This allows to integrate neo in erp5 and to prepare different buildout
      installations of neo.
      The protocol and connectors are no more generic but can now support IPv4 and
      IPv6 connections. We adopted a specific way of development which allow to
      easily add new protocols in the future.
      
      git-svn-id: https://svn.erp5.org/repos/neo/trunk@2654 71dcc9de-d417-0410-9af5-da40c76e7ee4
      0cdbf0ea
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