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  1. Jackrabbit Oak
  2. OAK-7795

Log a debug message when two or more indices have same or very close cost amounts

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    Details

    • Type: Task
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.10.0, 1.9.10
    • Component/s: query
    • Labels:
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      Description

      The index selection mechanism in QueryImpl may lead to the wrong index to be picked up in case different indexes return same (or very close) costs.
      As a remedy we can set cost overrides, change queries or index definitions.

      However to speed up identification of such problematics situations it'd be good to have a line in the (debug) logs reporting when for a particular query a number of indexes have same or very close costs (in the order of 10^-1). This would give a first pointer to such possible problematic situations to be inspected.

        Attachments

        1. OAK-7795.0.patch
          1 kB
          Tommaso Teofili
        2. OAK-7795.1.patch
          2 kB
          Tommaso Teofili

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              • Assignee:
                teofili Tommaso Teofili
                Reporter:
                teofili Tommaso Teofili
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                  Updated:
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