Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-12200

tailable cursor goes invalid after 10 minutes

    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 2.5.5
    • Affects Version/s: 2.5.4
    • Component/s: Querying
    • None
    • ALL

      I am using the mgo driver to create a tailable cursor on the oplog. For example:

      oplogColl.Find(oplogStart.Query()).LogReplay().Tail(time.Second)
      

      In 2.5.4, this cursor becomes invalid after 10 minutes. Below is information from the server log for this connection. I can get more complete server logs if necessary.

      2013-12-24T12:29:53.687-0500 [initandlisten] connection accepted from 127.0.0.1:60561 #26 (5 connections now open)
      2013-12-24T12:29:53.696-0500 [conn26] runQuery called local.oplog.rs { ts: { $gte: Timestamp 1387905878000|2 } }
      2013-12-24T12:29:53.696-0500 [conn26] query local.oplog.rs query: { ts: { $gte: Timestamp 1387905878000|2 } } cursorid:89704825967447 ntoreturn:0 ntoskip:0 keyUpdates:0 locks(micros) r:194 nreturned:1 reslen:173 0ms
      2013-12-24T12:29:53.697-0500 [conn26] getmore local.oplog.rs cursorid:89704825967447 ntoreturn:0 keyUpdates:0 locks(micros) r:21 nreturned:1 reslen:97 0ms
      2013-12-24T12:29:58.713-0500 [conn26] getmore local.oplog.rs cursorid:89704825967447 ntoreturn:0 keyUpdates:0 locks(micros) r:200 nreturned:0 reslen:20 5014ms
      2013-12-24T12:30:03.728-0500 [conn26] getmore local.oplog.rs cursorid:89704825967447 ntoreturn:0 keyUpdates:0 locks(micros) r:198 nreturned:0 reslen:20 5014ms
      ...
      ...
      ...
      2013-12-24T12:39:55.500-0500 [conn26] getMore: cursorid not found local.oplog.rs 89704825967447
      2013-12-24T12:39:55.501-0500 [conn26] getmore local.oplog.rs cursorid:89704825967447 ntoreturn:0 keyUpdates:0 locks(micros) r:361 nreturned:0 reslen:20 5015ms
      2013-12-24T12:39:55.505-0500 [conn26] Socket recv() conn closed? 127.0.0.1:60561
      

      This does not occur in 2.4.8

            Assignee:
            matt.dannenberg Matt Dannenberg
            Reporter:
            cory.mintz@mongodb.com Cory Mintz
            Votes:
            0 Vote for this issue
            Watchers:
            8 Start watching this issue

              Created:
              Updated:
              Resolved: