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  1. Solr
  2. SOLR-7128

Two phase distributed search is fetching extra fields in GET_TOP_IDS phase


    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 4.10.2, 4.10.3
    • Fix Version/s: 4.10.4, 5.1, 6.0
    • Component/s: search
    • Labels:


      Pablo Queixalos reported this to me privately so I am creating this issue on his behalf.

      We found an issue in versions 4.10.+ (4.10.2 and 4.10.3 for sure).

      When processing a two phase distributed query with an explicit fl parameter, the two phases are well processed, but the GET_TOP_IDS retrieves the matching documents fields, even if a GET_FIELDS shard request is getting executed just after.

      => id is retrieved during GET_TOP_IDS phase that's ok:: it's our uniqueKeyField
      => title is also retrieved during GET_TOP_IDS phase, that's not ok.

      I'm able to reproduce this. This is pretty bad performance bug that was introduced in SOLR-5768 or it's subsequent related issues. I plan to fix this bug and add substantial tests to assert such things.


        1. SOLR-7128-addendum.patch
          7 kB
          Shalin Shekhar Mangar
        2. SOLR-7128.patch
          17 kB
          Shalin Shekhar Mangar
        3. SOLR-7128.patch
          18 kB
          Shalin Shekhar Mangar
        4. SOLR-7128.patch
          19 kB
          Shalin Shekhar Mangar
        5. SOLR-7128.patch
          19 kB
          Shalin Shekhar Mangar

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              • Assignee:
                shalinmangar Shalin Shekhar Mangar
                shalinmangar Shalin Shekhar Mangar
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