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  1. Core Server
  2. SERVER-2276

Lost Data while Master in Replica set went down

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    • Icon: Bug Bug
    • Resolution: Incomplete
    • Icon: Major - P3 Major - P3
    • None
    • 1.6.5
    • Replication, Sharding
    • None
    • CentOs 5
    • Linux

    Description

      Lost Data while Master in Replica set went down

      Lost data when i killed master while inserting data through mongos shell.

      I don't see any rollback files in any of the data directories.

      Configuration:

      Replica Set dbs

      mongod --fork --rest --port 30001 --replSet set1/localhost:30001,localhost:30002,localhost:30003 --shardsvr --oplogSize 500 --dbpath /home/mongo/data/db/s1r1 --logpath /home/mongo/logs/s1r1.log
      mongod --fork --rest --port 30002 --replSet set1/localhost:30001,localhost:30002,localhost:30003 --shardsvr --oplogSize 500 --dbpath /home/mongo/data/db/s1r2 --logpath /home/mongo/logs/s1r2.log
      mongod --fork --rest --port 30003 --replSet set1/localhost:30001,localhost:30002,localhost:30003 --shardsvr --oplogSize 500 --dbpath /home/mongo/data/db/s1r3 --logpath /home/mongo/logs/s1r3.log
      mongod --fork --rest --port 30004 --replSet set1 --logpath /home/mongo/logs/arbiter1_set1.log --dbpath /home/mongo/data/db/s1/arbiter1 --oplogSize 500
      mongod --fork --rest --port 30005 --replSet set1 --logpath /home/mongo/logs/arbiter2_set1.log --dbpath /home/mongo/data/db/s1/arbiter2 --oplogSize 500

      Replica configuration:

      new_config = {_id: 'set1', members: [
                               {_id: 0, host: 'localhost:30001'},
                               {_id: 1, host: 'localhost:30002'},
                               {_id: 2, host: 'localhost:30003'},
      {_id: 3, host: 'localhost:30004',arbiterOnly: true},
      {_id: 4, host: 'localhost:30005',arbiterOnly: true}]
                }

      Configuration Server

      mongod --fork --configsvr --port 20001 --dbpath /home/mongo/data/db/config1 --logpath /home/mongo/logs/config1.log

      Mongos

      mongos --fork --configdb localhost:20001 --chunkSize 1 --logpath /home/mongo/logs/mongos.log

      > rs.status()
      {
      "set" : "set1",
      "date" : "Wed Dec 22 2010 14:47:07 GMT-0500 (EST)",
      "myState" : 1,
      "members" : [

      { "_id" : 0, "name" : "db6.moon-ray.com:30001", "health" : 1, "state" : 1, "self" : true }

      ,

      { "_id" : 1, "name" : "localhost:30002", "health" : 1, "state" : 2, "uptime" : 30, "lastHeartbeat" : "Wed Dec 22 2010 14:47:07 GMT-0500 (EST)" }

      ,

      { "_id" : 2, "name" : "localhost:30003", "health" : 1, "state" : 2, "uptime" : 24, "lastHeartbeat" : "Wed Dec 22 2010 14:47:07 GMT-0500 (EST)" }

      ,

      { "_id" : 3, "name" : "localhost:30004", "health" : 1, "state" : 7, "uptime" : 26, "lastHeartbeat" : "Wed Dec 22 2010 14:47:07 GMT-0500 (EST)" }

      ,

      { "_id" : 4, "name" : "localhost:30005", "health" : 1, "state" : 7, "uptime" : 26, "lastHeartbeat" : "Wed Dec 22 2010 14:47:07 GMT-0500 (EST)" }

      ],
      "ok" : 1
      }

      added sharding config through mongos

      db.runCommand(

      { addshard : "set1/localhost:30001,localhost:30002,localhost:30003", name : "shard1" }

      );

      db.runCommand(

      {listshards:1}

      )
      {
      "shards" : [

      { "_id" : "shard1", "host" : "set1/localhost:30001,localhost:30002,localhost:30003" }

      ],
      "ok" : 1
      }

      inserted some data

      use demo_contacts

      db.contacts.count()
      300000

      Killed master while inserting data.
      > db.contacts.count()
      300000
      > for (var i = 1; i <= 100000; i++) db.contacts.save({aid:4, contact_id:i,test_string: "This is test string to test mongodb s>
      > db.contacts.count()
      399981
      >

      ~

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            Unassigned Unassigned
            krishna Krishna Maddireddy
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            Dates

              Created:
              Updated:
              Resolved: