Challenge for the rally-eventdata-track to look at the impact of `index.number_of_routing_shards` setting in indexing throughput

rally_split_indexing_challenge.json

{% set p_bulk_indexing_clients = (bulk_indexing_clients | default(20)) %}
{% set p_duration = bulk_indexing_duration | default(900) %}

{
  "name": "split_indexing",
  "description": "Index data into indices with and without `number_of_routing_shards` set. IDs are autogenerated by Elasticsearch, meaning there are no conflicts.",
  "meta": {
    "client_count": {{ p_bulk_indexing_clients }},
    "benchmark_type": "split-indexing"
  },
  "schedule": [
    {
      "name": "deleteindex_elasticlogs-nosplit",
      "operation": {
        "operation-type": "delete-index",
        "index": "elasticlogs-nosplit"
      }
    },
    {
      "name": "deleteindex_elasticlogs-split2",
      "operation": {
        "operation-type": "delete-index",
        "index": "elasticlogs-split2"
      }
    },
    {
      "name": "deleteindex_elasticlogs-split6",
      "operation": {
        "operation-type": "delete-index",
        "index": "elasticlogs-split6"
      }
    },
    {
      "name": "deleteindex_elasticlogs-split30",
      "operation": {
        "operation-type": "delete-index",
        "index": "elasticlogs-split30"
      }
    },
    {
      "name": "create_elasticlogs-nosplit",
      "operation": {
        "operation-type": "createindex",
        "index_name": "elasticlogs-nosplit",
        "index_template_body": {
          "template": "elasticlogs-nosplit",
          "settings": {
            "index.refresh_interval": "5s",
            "index.codec": "best_compression",
            "index.number_of_replicas": 0,
            "index.number_of_shards": 1
          },
          "mappings": "mappings.json",
          "aliases": {}
        },
        "index_template_name": "elasticlogs-nosplit"
      }
    },
    {
      "name": "create_elasticlogs-split2",
      "operation": {
        "operation-type": "createindex",
        "index_name": "elasticlogs-split2",
        "index_template_body": {
          "template": "elasticlogs-split2",
          "settings": {
            "index.refresh_interval": "5s",
            "index.codec": "best_compression",
            "index.number_of_routing_shards" : 6,
            "index.number_of_replicas": 0,
            "index.number_of_shards": 1
          },
          "mappings": "mappings.json",
          "aliases": {}
        },
        "index_template_name": "elasticlogs-split2"
      }
    },
    {
      "name": "create_elasticlogs-split6",
      "operation": {
        "operation-type": "createindex",
        "index_name": "elasticlogs-split6",
        "index_template_body": {
          "template": "elasticlogs-split6",
          "settings": {
            "index.refresh_interval": "5s",
            "index.codec": "best_compression",
            "index.number_of_routing_shards" : 6,
            "index.number_of_replicas": 0,
            "index.number_of_shards": 1
          },
          "mappings": "mappings.json",
          "aliases": {}
        },
        "index_template_name": "elasticlogs-split6"
      }
    },
    {
      "name": "create_elasticlogs-split30",
      "operation": {
        "operation-type": "createindex",
        "index_name": "elasticlogs-split30",
        "index_template_body": {
          "template": "elasticlogs-split30",
          "settings": {
            "index.refresh_interval": "5s",
            "index.codec": "best_compression",
            "index.number_of_routing_shards" : 30,
            "index.number_of_replicas": 0,
            "index.number_of_shards": 1
          },
          "mappings": "mappings.json",
          "aliases": {}
        },
        "index_template_name": "elasticlogs-split30"
      }
    },
    {
      "name": "index-append-1000-elasticlogs-nosplit",
      "operation": {
        "operation-type": "bulk",
        "param-source": "elasticlogs_bulk",
        "index": "elasticlogs-nosplit",
        "bulk-size": 1000
      },
      "warmup-time-period": 300,
      "time-period": {{ p_duration }},
      "clients": {{ p_bulk_indexing_clients }}
    },
    {
      "name": "index-append-1000-elasticlogs-split2",
      "operation": {
        "operation-type": "bulk",
        "param-source": "elasticlogs_bulk",
        "index": "elasticlogs-split2",
        "bulk-size": 1000
      },
      "warmup-time-period": 300,
      "time-period": {{ p_duration }},
      "clients": {{ p_bulk_indexing_clients }}
    },
    {
      "name": "index-append-1000-elasticlogs-split6",
      "operation": {
        "operation-type": "bulk",
        "param-source": "elasticlogs_bulk",
        "index": "elasticlogs-split6",
        "bulk-size": 1000
      },
      "warmup-time-period": 300,
      "time-period": {{ p_duration }},
      "clients": {{ p_bulk_indexing_clients }}
    },
    {
      "name": "index-append-1000-elasticlogs-split30",
      "operation": {
        "operation-type": "bulk",
        "param-source": "elasticlogs_bulk",
        "index": "elasticlogs-split30",
        "bulk-size": 1000
      },
      "warmup-time-period": 300,
      "time-period": {{ p_duration }},
      "clients": {{ p_bulk_indexing_clients }}
    }
  ]
}