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  1. Core Server
  2. SERVER-32312

New collection creation is slow and DB clients see primary as offline

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major - P3 Major - P3
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    Description

      We started seeing that the mongodb clients are finding the primary to be down.
      When i checked the mongodb log, i saw two different types of behavior/errors at different times:

      1) simple INSERT into a (new non-existing) collection is taking very long time (~16 seconds) at times. The very same insert was running fine for years and nothing else changed

      2) I saw the following errors:
      warning: slow scan in allocFromFreeList (in write lock)
      Sun Dec 10 13:00:07.698 [conn10363640] warning: newExtent 2223 scanned
      insert xxxx ninserted:1 keyUpdates:0 locks(micros) w:10384820 10384ms

      These two situations are causing an outage and should be fixed asap.

      We are currently using 2.4.9 mongodb
      I know that mongo upgrade is needed but this version was working fine till recently and nothing changed.
      Any pointers will be highly appreciated at your earliest convenience.

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            mark.agarunov Mark Agarunov
            sreek95051@yahoo.com Sree Himakunthala
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