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  1. Core Server
  2. SERVER-35638

Shell auto-completion blocks when listCollection is waiting for locks

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.1.11
    • Component/s: Shell
    • Labels:

      Description

      Auto-completion after `db.` sends a listCollection to the server, which may be blocked on locks. In 4.0, the lifespan of a lock could be much longer than before due to transactions. When a 'dropDatabase' is waiting on the global lock in X mode which is acquired by an inactive transaction in IX mode, listCollection will be blocked. The behavior is expected, but when a user notices the blocking dropDatabase and wants to inspect and kill the current operation, the user cannot use auto-completion. Otherwise, the shell hangs after the <tab>

      > db.cur<tab>

      Using maxTimeMS with listCommand could fix the usability issue.

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          related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-41118 Have autocomplete.js handle slow listCollections responses

          • Major - P3 - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-32942 mongo shell: for users authorized to certain namespace, make discovery easy

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-36262 mongo shell: allow users to show dbs (on <4.0 versions of the server) without the listDatabases privilege

          • Major - P3 - Major loss of function.
          • Closed

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                • Created:
                  Updated:
                  Resolved: