CouchDB
  1. CouchDB
  2. COUCHDB-326

Occasional {"error":"error","reason":"eacces"} errors deleting a database on Windows

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.9
    • Fix Version/s: 1.0
    • Component/s: None
    • Labels:
      None
    • Environment:

      Windows, couch 0.9, erlang R12B 5.6.5

    • Skill Level:
      Regular Contributors Level (Easy to Medium)

      Description

      On Windows, occasionally you will see errors attempting to delete a database. This manifests itself by 10-30% of the test suite failing on Windows. If you retry the tests that failed, they will usually pass on subsequent attempts. Running the tests individually causes them to fail roughly 10% of the time.

      The log output shown is:

      [debug] [<0.18650.6>] httpd 500 error response:

      {"error":"error","reason":"eacces"}

      [info] [<0.18650.6>] 127.0.0.1 - - 'DELETE' /test_suite_db/ 500

      A slightly snipped transcript from IRC:

      (2:58:32 PM) markh: I see a number of INFO logs "Shutting down view group server, monitored db is closing." directly before the error. I was guessing the file may be unlink'd before one of those workers actually closes its handle?
      (2:58:54 PM) alisdair: yeah, it's probably a race condition
      (2:59:13 PM) alisdair: where the delete is tried before the fd is let go
      (2:59:26 PM) alisdair: the reader fd that is
      (2:59:32 PM) markh: yeah
      ...
      (3:11:47 PM) alisdair: i can't find an obvious deadlock
      (3:12:18 PM) alisdair: couch_server:delete explicitly waits for the db process to exit
      (3:12:23 PM) alisdair: before deleting it
      (3:15:15 PM) alisdair: i think i found the problem
      (3:15:23 PM) alisdair: but i need a windows machine to confirm
      (3:15:30 PM) alisdair: i'll look into it tomorrow

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Unassigned
            Reporter:
            Mark Hammond
          • Votes:
            2 Vote for this issue
            Watchers:
            4 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development