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  1. Core Server
  2. SERVER-19019

Fatal assertion when failing to create temporary mapReduce collection on secondary

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    • Query
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      var rst = new ReplSetTest({nodes: 2});
      		 
      rst.startSet();
      		 
      rst.initiate();
      		 
      rst.awaitReplication();
      		 
       
      		 
      var adminDB = rst.getPrimary().getDB('admin');
      		 
       
      		 
      // Ensure the namespace exists
      		 
      adminDB.system.roles.insert({});
      		 
       
      		 
      // merge or replace can be used as the out type
      		 
      adminDB.system.roles.mapReduce(Function.prototype, Function.prototype, {out: {merge: 'mrOutput'}});
      		 
      rst.awaitReplication();

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      var rst = new ReplSetTest({nodes: 2}); rst.startSet(); rst.initiate(); rst.awaitReplication();   var adminDB = rst.getPrimary().getDB('admin');   // Ensure the namespace exists adminDB.system.roles.insert({});   // merge or replace can be used as the out type adminDB.system.roles.mapReduce(Function.prototype, Function.prototype, {out: {merge: 'mrOutput'}}); rst.awaitReplication();
    • Query 2017-03-27, Query 2017-04-17

    Description

      This bug is non-fatal in versions earlier than 3.1.2 (i.e., prior to the changes in SERVER-15207).

      It requires the mapReduce to be performed on a special collection like "admin.system.roles" or "admin.system.users".

      3.1.2+:

       W ACCESS   [repl writer worker 15] Skipping bad update to roles collection in oplog. NoSuchKey Missing expected field "role" Oplog entry: i
      		 
       W ACCESS   [repl writer worker 15] Skipping bad update to roles collection in oplog. NoSuchKey Missing expected field "role" Oplog entry: i
      		 
       E REPL     [repl writer worker 15] Failed command { create: "tmp.mr.system.roles_0", temp: true } on admin with status BadValue cannot write to 'admin.tmp.mr.system.roles_0' during oplog application
      		 
       I -        [repl writer worker 15] Fatal Assertion 16359

      3.1.1 and 3.0.4:

      W ACCESS   [repl writer worker 15] Skipping bad update to roles collection in oplog. NoSuchKey Missing expected field "role" Oplog entry: i
      		 
      W REPL     [repl writer worker 15] Failed command { create: "tmp.mr.system.roles_0", temp: true } on admin with status BadValue cannot write to 'admin.tmp.mr.system.roles_0' during oplog application
      		 
      I COMMAND  [repl writer worker 15] CMD: drop admin.tmp.mr.system.roles_0
      		 
      W REPL     [repl writer worker 15] Failed command { drop: "tmp.mr.system.roles_0" } on admin with status UnknownError ns not found during oplog application

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-19435 mapreduce cause Secondary assert

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-28074 Overly eager check for .system. in collection names causes error / assertion

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-15207 Return errors from commands during replication

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

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              backlog-server-query Backlog - Query Team (Inactive)
              kamran.khan Kamran K.
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                Updated:
                Resolved: