Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-37786

Reject change streams which modify or project-out the resume token

    XMLWordPrintable

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.1.8
    • Component/s: Aggregation Framework
    • Labels:
      None
    • Backwards Compatibility:
      Minor Change
    • Backport Requested:
      v4.0
    • Sprint:
      Query 2018-12-17, Query 2018-12-31, Query 2019-01-14, Query 2019-01-28, Query 2019-02-11

      Description

      For example, this pipeline:

      db.x.watch([{$replaceRoot: {newRoot: "$fullDocument"}}])

      Such a pipeline is incompatible with the drivers protocol, and will fail to resume in the face of a network outage. It is not intended to be supported, so we should ban it to provide a more predictable failure scenario. Now that we have completed SERVER-35904, it shouldn't be very difficult to verify the _id is preserved by the pipeline.

        Attachments

          Issue Links

          is depended on by

          Bug - A problem which impairs or prevents the functions of the product. JAVA-2828 ChangeStreamIterable withDocumentClass throws exception because convertResultsCallback looks for resumeToken

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

          Task - A task that needs to be done. SERVER-38414 Upgrade/Downgrade testing for change stream high water mark

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-38408 Return postBatchResumeToken from all mongoD change streams

          • Major - P3 - Major loss of function.
          • Closed
          is documented by

          Task - A task that needs to be done. DOCS-12423 Docs for SERVER-37786: Reject change streams which modify or project-out the resume token

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Task - A task that needs to be done. JAVA-3163 Re-enable the 'should throw if the _id field is projected out' changestream test for sharded clusters

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

          Task - A task that needs to be done. PHPLIB-446 Skip tests that modify resume token for server 4.1.8+

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-37669 Allow change streams to project out the resume token

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • In Progress

            Activity

              People

              Assignee:
              bernard.gorman Bernard Gorman
              Reporter:
              charlie.swanson Charlie Swanson
              Participants:
              Votes:
              0 Vote for this issue
              Watchers:
              12 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: