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  1. Core Server
  2. SERVER-5044

$stdDev aggregation operator for standard deviation

        Details

        • Backwards Compatibility:
          Fully Compatible

          Description

          see https://gist.github.com/1886960 for an algorithm to handle calculating standard deviation and variance across many servers.

            Issue Links

            is related to

            Task - A task that needs to be done. DRIVERS-234 Aggregation Builder Support for 3.2

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

            New Feature - A new feature of the product, which has yet to be developed. CSHARP-1367 $stdDev aggregation operator for standard deviation

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

            New Feature - A new feature of the product, which has yet to be developed. JAVA-1935 $stdDev aggregation operator for standard deviation

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

            Web Link https://github.com/mongodb/mongo/pull/464

            Web Link Pull request mongo/pull/409

              Activity

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              5 older comments
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              auto auto (Inactive) added a comment -

              Author:

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

              Message: Clean up AccumulatorAvg

              Major change is not inheriting from AccumulatorSum

              Prep for SERVER-5044 $stdDev accumulator
              Branch: master
              https://github.com/mongodb/mongo/commit/982d5d281806d470696809d11dceaa098aed4906

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              auto auto (Inactive) added a comment - Author: {u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'} Message: Clean up AccumulatorAvg Major change is not inheriting from AccumulatorSum Prep for SERVER-5044 $stdDev accumulator Branch: master https://github.com/mongodb/mongo/commit/982d5d281806d470696809d11dceaa098aed4906
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              KevinLDavenport Kevin Davenport added a comment -

              This is a must have.

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              KevinLDavenport Kevin Davenport added a comment - This is a must have.
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              itsmejainh Himanshu Jain added a comment -

              Hey, It's a nice to have feature.
              Any updates on this ?

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              itsmejainh Himanshu Jain added a comment - Hey, It's a nice to have feature. Any updates on this ?
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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-5044 Standard Deviation accumulator operators
              Branch: master
              https://github.com/mongodb/mongo/commit/ac0ff84d3fd4c127af8cbcea560d3793a3c3f131

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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-5044 Standard Deviation accumulator operators Branch: master https://github.com/mongodb/mongo/commit/ac0ff84d3fd4c127af8cbcea560d3793a3c3f131
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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-5044 Use relative error when testing sharded $stdDev operations
              Branch: master
              https://github.com/mongodb/mongo/commit/faf0663603ed7a27f8c726245b005caa50065f81

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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-5044 Use relative error when testing sharded $stdDev operations Branch: master https://github.com/mongodb/mongo/commit/faf0663603ed7a27f8c726245b005caa50065f81

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                  Dates

                  • Created:
                    Updated:
                    Resolved:
                    Days since reply:
                    1 year, 16 weeks ago
                    Date of 1st Reply:

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