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  1. Core Server
  2. SERVER-16669

Cannot stop balancer using sh.stopBalancer() in 2.2.3

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 2.2.3
    • Component/s: Sharding
    • None
    • Linux

      We have a sharded cluster of 2.2.3 version of mongo. We are going to upgrade it to 2.4.12, but faced an issue when we cannot stop the balancer (in fact we hoped it was already stopped).

      So, connection to one of /mongos/ shows us:

      mongos> sh.isBalancerRunning()
true
mongos> sh.getBalancerState()
false
mongos> use config
switched to db config
mongos> db.locks.find({'_id': 'balancer'}).pretty()
{
        "_id" : "balancer",
        "process" : "atc005:37017:1415292838:1804289383",
        "state" : 1,
        "ts" : ObjectId("5485b6e0903bf7e88aaa2276"),
        "when" : ISODate("2014-12-08T14:34:08.769Z"),
        "who" : "atc005:37017:1415292838:1804289383:Balancer:1169620192",
        "why" : "doing balance round"
}
mongos> sh.stopBalancer()
Waiting for active hosts...
Waiting for the balancer lock...

      sh.stopBalancer() takes forever. The situation is very similar to SERVER-7260 but the author of the previous ticket disappeared.

      I wonder if we can forcefully remove that lock?

        1. 666.txt
          48 kB
          Andrey Miroshnichenko

            Assignee:
            sam.kleinman Sam Kleinman (Inactive)
            Reporter:
            andrey@idle-games.com Andrey Miroshnichenko
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              Created:
              Updated:
              Resolved: