https://bugs.openldap.org/show_bug.cgi?id=9555

          Issue ID: 9555
           Summary: Introduce a default operations timeout for
                    back-asyncmeta
           Product: OpenLDAP
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: ---
         Component: backends
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Currently, if no operation timeout is configured, the default asyncmeta
behavior is to have no timeout. This is potentially unsafe - if for some reason
a target server does not return a response, the operation will stay in the
queue until the connection is reset due to some network error (idle-timeout is
not honored if there are pending operations). In the case of many such
operations, the queues can get filled up and asyncmeta will become unable to
process new operations for some time.

Therefore, a setting of "0" should be used carefully and with intent. To
prevent accidental configuration of 0, the default operations timeout should be
a value larger than 0.

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