Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-17362

ClientCursor::staticYield can't unlock b/c of recursive lock ns

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Incomplete
    • Affects Version/s: 2.6.6
    • Fix Version/s: None
    • Component/s: Querying
    • Labels:
      None
    • Environment:
      SSD drives
      CentOS 6.5
    • Operating System:
      Linux
    • Steps To Reproduce:
      Hide

      it's intermittent and I can't replicate it. It's not even specific to times of heavy load.

      Show
      it's intermittent and I can't replicate it. It's not even specific to times of heavy load.

      Description

      Intermittently my logs fill with "ClientCursor::staticYield can't unlock b/c of recursive lock ns ..."[millions of entries] . It happens on a lot of different collections but always on a findAndModify. When it's at it's worse - the lock lasts 6-7 seconds but the entire database is unresponsive during this time.
      I've read that it may may be related to insufficient indexing but I've checked that with a .explain and the cursor is BtreeCursor.
      The issue is similar to this SERVER-15583
      but an upgrade to 2.6.6 solved his whereas I'm already on 2.6.6.

        Attachments

          Issue Links

            Activity

              People

              Assignee:
              ramon.fernandez Ramon Fernandez Marina
              Reporter:
              ricei Ian Rice
              Participants:
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: