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  1. Core Server
  2. SERVER-29874

Two Phase Drops: dropDatabase does not work with applyOps

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.5.10
    • Replication
    • None
    • Fully Compatible
    • ALL
    • Repl 2017-07-31

    Description

      Since SERVER-29277, the dropDatabase waits for all collection drops to complete before removing the entry for the database from the catalog. To do this, the free function mongo::dropDatabase() needs to call either ReplicationCoordinator::awaitReplicationOfLastOpForClient() or ReplicationCoordinator::awaitReplication(). However, these functions fail when dropDatabase() is called from within an applyOps operation because applyOps executes all its given operations while holding the global lock.

      To reproduce:

      db.adminCommand({applyOps: [{op: 'c', ns: 'test.$cmd', o: {create: 't'}}, {op: 'c', ns: 'test.$cmd', o: {drop: 't'}}, {op: 'c', ns: 'test.$cmd', o: {dropDatabase: 1}}]})
      

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              benety.goh@mongodb.com Benety Goh
              benety.goh@mongodb.com Benety Goh
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