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  1. Drivers
  2. DRIVERS-149

Some MongoDB 2.6 driver releases may not be able to add users or create indexes with mongos versions before 2.4.0

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • None

    Description

      Drivers that implement DRIVERS-103 and/or DRIVERS-132 according to spec determine whether a command exists like so:

      try
          result = db.runCommand({<command>: ...})
      catch error
          if error code == 59 or error code == Null
              <fallback to existing code for backward compatibility>
          else
              re-raise error

      However, older mongos versions use code 13390 when a command is not found, so drivers throw an error instead of falling back to the legacy code path.

      This is a problem for all versions of mongos previous to 2.4.0:

      > db.version()
      1.8.0
      > db.runCommand("foobar")
      Thu May  1 13:07:55 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()
      1.8.5
      > db.runCommand("foobar")
      Thu May  1 13:10:00 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()           
      2.0.0
      > db.runCommand("foobar")
      Thu May  1 13:11:29 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()           
      2.0.9
      > db.runCommand("foobar")
      Thu May  1 13:13:07 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()           
      2.2.0
      > db.runCommand("foobar")
      Thu May  1 13:13:58 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()           
      2.2.7
      > db.runCommand("foobar")
      Thu May  1 13:14:51 uncaught exception: error { "$err" : "unrecognized command: foobar", "code" : 13390 }
      > db.version()                                  
      2.4.0
      > db.runCommand("foobar")                       
      { "ok" : 0, "errmsg" : "no such cmd: foobar" }
      > db.version()           
      2.4.10
      > db.runCommand("foobar")
      { "ok" : 0, "errmsg" : "no such cmd: foobar" }

      Note: This is not a problem for any version of mongod

      > db.version()
      1.8.0
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()
      1.8.5
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()           
      2.0.0
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()           
      2.0.9
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()           
      2.2.0
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()           
      2.2.7
      > 
      > db.runCommand("foobar")
      {
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	},
      	"ok" : 0
      }
      > db.version()           
      2.4.0
      > db.runCommand("foobar")
      {
      	"ok" : 0,
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	}
      }
      > db.version()           
      2.4.10
      > db.runCommand("foobar")
      {
      	"ok" : 0,
      	"errmsg" : "no such cmd: foobar",
      	"bad cmd" : {
      		"foobar" : 1
      	}
      }

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              barrie Barrie Segal
              jesse@mongodb.com A. Jesse Jiryu Davis
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                Created:
                Updated:
                Resolved: