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  1. Core Server
  2. SERVER-42055

Only acquire a collection IX lock to write the lastVote document

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    Details

    • Backwards Compatibility:
      Fully Compatible
    • Backport Requested:
      v4.2, v4.0, v3.6, v3.4
    • Sprint:
      Repl 2019-07-15
    • Case:
    • Linked BF Score:
      16

      Description

      This lock acquisition should be a collection IX, not a DB X. This will prevent elections from blocking behind other local database readers and writers. This is just a single document update and as a result shouldn't need a stronger lock. Before doing this we should check the history of this lock and see why it is so coarse grained.

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          Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-48399 Writing config document to "local.system.replset" should not acquire database lock in stronger mode (X).

          • Major - P3 - Major loss of function.
          • Open
          related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-30727 Secondary stuck in loop of current election

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-42653 Always waitUntilDurable when writing lastVote document

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-42056 Test that local db reads do not block elections or vote requests

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

            Activity

              People

              Assignee:
              matthew.russotto Matthew Russotto
              Reporter:
              judah.schvimer Judah Schvimer
              Participants:
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                Dates

                Created:
                Updated:
                Resolved: