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  1. Mongoid
  2. MONGOID-2241

map_reduce on replica set fails with error "not master" when outputting to collection.

    • Type: Icon: Task Task
    • Resolution: Done
    • 3.0.2
    • Affects Version/s: None
    • Component/s: None

      I am running a map reduce on a replica set with Mongoid3 and get "failed with error "not master" when my db config is set to consistency :eventual.
      Dug into the moped gem a bit and I see that on reads it's yielding to the secondary node, which is fine but my map reduce then needs to write to primary.

      I included the moped method as well as my stack trace. I'm going to temporarily fix this on my end but it would be great if this gets patched. Thanks a lot.

      gems/moped-1.1.3/lib/moped/session/context.rb
      def with_node
      if consistency == :eventual
      cluster.with_secondary do |node|
      yield node
      end
      else
      cluster.with_primary do |node|
      yield node
      end
      end
      end

      failed with error "not master"
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:74:in `block in command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:522:in `[]'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:522:in `block (3 levels) in flush'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:521:in `map'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:521:in `block (2 levels) in flush'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:113:in `ensure_connected'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:517:in `block in flush'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:532:in `logging'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:516:in `flush'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:505:in `process'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/node.rb:70:in `command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/session/context.rb:51:in `block in command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/session/context.rb:105:in `block in with_node'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/cluster.rb:180:in `with_secondary'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/session/context.rb:104:in `with_node'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/session/context.rb:50:in `command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/database.rb:76:in `command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/moped-1.1.3/lib/moped/session.rb:78:in `command'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/mongoid-3.0.1/lib/mongoid/contextual/map_reduce.rb:269:in `results'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/mongoid-3.0.1/lib/mongoid/contextual/map_reduce.rb:239:in `documents'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/mongoid-3.0.1/lib/mongoid/contextual/map_reduce.rb:36:in `each'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/mongoid-3.0.1/lib/mongoid/contextual/map_reduce.rb:9:in `entries'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/mongoid-3.0.1/lib/mongoid/contextual/map_reduce.rb:9:in `inspect'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/railties-3.2.6/lib/rails/commands/console.rb:47:in `start'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/railties-3.2.6/lib/rails/commands/console.rb:8:in `start'
      from /Users/E/.rvm/gems/ruby-1.9.3-p194@wtest/gems/railties-3.2.6/lib/rails/commands.rb:41:in `<top (required)>'

            Assignee:
            durran Durran Jordan
            Reporter:
            Jewgonewild Jewgonewild [X]
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              Created:
              Updated:
              Resolved: