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m-ghazanfar avatar m-ghazanfar commented on June 17, 2024

My overlord dynamic config looks like this,

overlord dynamic config
{
  "type": "equalDistributionWithCategorySpec",
  "workerCategorySpec": {
    "categoryMap": {
      "kill": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "compact": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "single_phase_sub_task": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "partial_dimension_cardinality": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "partial_index_generate": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "partial_index_generic_merge": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "partial_range_index_generate": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "partial_dimension_distribution": {
        "defaultCategory": "abc_category",
        "categoryAffinity": {}
      },
      "index_kafka": {
        "defaultCategory": "xxx_category",
        "categoryAffinity": {
          "datasource_2": "yyy_category",
          "datasource_3": "zzz_category"
        }
      }
    },
    "strong": true
  }
}

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m-ghazanfar avatar m-ghazanfar commented on June 17, 2024

We worked around this by explicitly setting the maxCompactionTaskSlots to the total available worker slots on the compaction tier.(Actually, we set it a little higher than that to improve middle manager utilisation)

See Update capacity for compaction tasks

Example,

curl --request POST "http://ROUTER_IP:ROUTER_PORT/druid/coordinator/v1/config/compaction/taskslots?max=600"

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