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  1. Core Server
  2. SERVER-12015

Reenable use of covering indexes with aggregation

        Details

        • Backwards Compatibility:
          Fully Compatible
        • Sprint:
          Quint Iteration 7, QuInt 8 08/28/15

          Description

          It is not currently possible to use covered indexes with the new query framework without using the full projection code in the non-covered cases.

            Issue Links

            is documented by

            Task - A task that needs to be done. DOCS-9011 Reenable use of covering indexes with aggregation

            • Critical - P2 - Crashes, loss of data, severe memory leak.
            • Closed
            is duplicated by

            New Feature - A new feature of the product, which has yet to be developed. SERVER-15026 Allow covered queries for first stage of Pipeline Aggregation

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

            Improvement - An improvement or enhancement to an existing feature or task. SERVER-16388 Aggregation operation not using any fields should use an appropriate index instead of collection scan

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

            Improvement - An improvement or enhancement to an existing feature or task. SERVER-22912 Query Optimizer

            • Trivial - P5 - Cosmetic problem like misspelt words or misaligned text.
            • Closed
            related to

            Task - A task that needs to be done. SERVER-11831 Use documentFromBsonWithDeps in agg again

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

              Activity

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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'}

              Message: SERVER-11831 Use documentFromBsonWithDeps in agg again

              This bypasses new query framework projection and replaces it with a much faster
              dedicated code path. The downside is that it prevents using covering indexes
              in the cases where that was allowed (SERVER-12015).
              Branch: master
              https://github.com/mongodb/mongo/commit/3e707bcd22b7c0e8275d25bf8e8b28c3cec4cc67

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              xgen-internal-githook Githook User added a comment - Author: {u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'} Message: SERVER-11831 Use documentFromBsonWithDeps in agg again This bypasses new query framework projection and replaces it with a much faster dedicated code path. The downside is that it prevents using covering indexes in the cases where that was allowed ( SERVER-12015 ). Branch: master https://github.com/mongodb/mongo/commit/3e707bcd22b7c0e8275d25bf8e8b28c3cec4cc67
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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'cswanson310', u'name': u'Charlie Swanson', u'email': u'charlie.swanson@mongodb.com'}

              Message: SERVER-12015 Re-enable use of covering indices in an aggregation pipeline
              Branch: master
              https://github.com/mongodb/mongo/commit/843fd8ae34d06ed73f824c124cd2d9ef7d23b814

              Show
              xgen-internal-githook Githook User added a comment - Author: {u'username': u'cswanson310', u'name': u'Charlie Swanson', u'email': u'charlie.swanson@mongodb.com'} Message: SERVER-12015 Re-enable use of covering indices in an aggregation pipeline Branch: master https://github.com/mongodb/mongo/commit/843fd8ae34d06ed73f824c124cd2d9ef7d23b814

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                  Dates

                  • Created:
                    Updated:
                    Resolved:

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