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  1. Core Server
  2. SERVER-1558

Documents should write checksum on write, verify checksum on read

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Done
    • None
    • 2.8.0-rc0
    • Storage
    • None
    • All platforms
    • Fully Compatible

    Description

      In InnoDB, crc page checksums are written as dirty pages are flushed from the buffer pool. On read, these checksums are verified. If the checksum fails, the server crashes awaiting intervention (startup with --innodb-force-recovery=N). At least for InnoDB, the cost is very little, since it takes microseconds around an operation that takes about milliseconds. The storage cost is also minimal.

      This is very helpful in failure scenarios. Check/repair in mongodb can currently only detect meta data corruption!

      Attachments

        Issue Links

          related to

          Bug - A problem which impairs or prevents the functions of the product. TOOLS-1155 mongodump should produce errors when some documents can not be fetched

          • Major - P3 - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. SERVER-10997 background consistency checking (patrol reads)

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-980 single server durability

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-12058 Primary should abort if encountered problems writing to the oplog

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-12061 Do not silently ignore read errors when syncing a replica set node

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-17892 Explicitly turn checksum on for all collections/indexes in WiredTiger by default

          • Major - P3 - Major loss of function.
          • Closed

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              Unassigned Unassigned
              morgo Morgan Tocker
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              Dates

                Created:
                Updated:
                Resolved: