# \[ERROR\]\[o.e.x.m.c.n.NodeStatsCollector\] collector \[node\_stats\] timed out when collecting data

**URL:** <https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194>\
**Category:** Elasticsearch\
**Created:** [August 7, 2020, 4:02pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194 "2020-08-07T16:02:03Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![Burga](https://avatars.discourse-cdn.com/v4/letter/b/9d8465/32.png) [@Burga](https://discuss.elastic.co/u/Burga)\
**Post date:** [August 7, 2020, 4:02pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/1 "2020-08-07T16:02:03Z")

</div>

Hi Guys , we just have an issue with part of the logs haven't been indexed ,  
in almost all elastic nodes logs I see  
error :

```auto
[ERROR][o.e.x.m.c.n.NodeStatsCollector] collector [node_stats] timed out when collecting data

```

From my knowledge the **node\_stats collector** has nothing to do with index content (data indexed )

moreover the appearance of this error started long time before the absence of the data(a few days ago )

Am I right ?

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<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [August 8, 2020, 1:16pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/2 "2020-08-08T13:16:21Z")

</div>

What is the full output of the cluster stats API?

---

<div class="post-metadata">

**Author:** ![Burga](https://avatars.discourse-cdn.com/v4/letter/b/9d8465/32.png) [@Burga](https://discuss.elastic.co/u/Burga)\
**Post date:** [August 9, 2020, 6:18am UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/3 "2020-08-09T06:18:36Z")

</div>

```auto
{
  "cluster_name": "es",
  "status": "green",
  "timed_out": false,
  "number_of_nodes": 9,
  "number_of_data_nodes": 9,
  "active_primary_shards": 14330,
  "active_shards": 28660,
  "relocating_shards": 0,
  "initializing_shards": 0,
  "unassigned_shards": 0,
  "delayed_unassigned_shards": 0,
  "number_of_pending_tasks": 0,
  "number_of_in_flight_fetch": 0,
  "task_max_waiting_in_queue_millis": 0,
  "active_shards_percent_as_number": 100
}

```

```auto
{
  "_nodes": {
    "total": 9,
    "successful": 9,
    "failed": 0
  },
  "cluster_name": "es",
  "timestamp": 1596953800396,
  "status": "green",
  "indices": {
    "count": 3915,
    "shards": {
      "total": 28710,
      "primaries": 14355,
      "replication": 1,
      "index": {
        "shards": {
          "min": 2,
          "max": 10,
          "avg": 7.333333333333333
        },
        "primaries": {
          "min": 1,
          "max": 5,
          "avg": 3.6666666666666665
        },
        "replication": {
          "min": 1,
          "max": 1,
          "avg": 1
        }
      }
    },
    "docs": {
      "count": 8547917092,
      "deleted": 5658175
    },
    "store": {
      "size_in_bytes": 6949711276970
    },
    "fielddata": {
      "memory_size_in_bytes": 1190315264,
      "evictions": 0
    },
    "query_cache": {
      "memory_size_in_bytes": 0,
      "total_count": 0,
      "hit_count": 0,
      "miss_count": 0,
      "cache_size": 0,
      "cache_count": 0,
      "evictions": 0
    },
    "completion": {
      "size_in_bytes": 0
    },
    "segments": {
      "count": 254703,
      "memory_in_bytes": 18128415488,
      "terms_memory_in_bytes": 13752476790,
      "stored_fields_memory_in_bytes": 3213846712,
      "term_vectors_memory_in_bytes": 0,
      "norms_memory_in_bytes": 369479488,
      "points_memory_in_bytes": 395877454,
      "doc_values_memory_in_bytes": 396735044,
      "index_writer_memory_in_bytes": 167550394,
      "version_map_memory_in_bytes": 1534854,
      "fixed_bit_set_memory_in_bytes": 0,
      "max_unsafe_auto_id_timestamp": 1596948769499,
      "file_sizes": {}
    }
  },
  "nodes": {
    "count": {
      "total": 9,
      "data": 9,
      "coordinating_only": 0,
      "master": 3,
      "ingest": 9
    },
    "versions": [
      "6.3.1"
    ],
    "os": {
      "available_processors": 36,
      "allocated_processors": 36,
      "names": [
        {
          "name": "Linux",
          "count": 9
        }
      ],
      "mem": {
        "total_in_bytes": 606504185856,
        "free_in_bytes": 7980625920,
        "used_in_bytes": 598523559936,
        "free_percent": 1,
        "used_percent": 99
      }
    },
    "process": {
      "cpu": {
        "percent": 263
      },
      "open_file_descriptors": {
        "min": 11319,
        "max": 17443,
        "avg": 14510
      }
    },
    "jvm": {
      "max_uptime_in_millis": 33153082551,
      "versions": [
        {
          "version": "1.8.0_102",
          "vm_name": "Java HotSpot(TM) 64-Bit Server VM",
          "vm_version": "25.102-b14",
          "vm_vendor": "Oracle Corporation",
          "count": 9
        }
      ],
      "mem": {
        "heap_used_in_bytes": 103098245904,
        "heap_max_in_bytes": 169337421824
      },
      "threads": 1746
    },
    "fs": {
      "total_in_bytes": 9739008036864,
      "free_in_bytes": 2711540731904,
      "available_in_bytes": 2313655341056
    },
    "plugins": [],
    "network_types": {
      "transport_types": {
        "security4": 9
      },
      "http_types": {
        "security4": 9
      }
    }
  }
}

```

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [August 9, 2020, 6:30am UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/4 "2020-08-09T06:30:29Z")

</div>

Your problem is that you have far too many shards, which makes gathering cluster information slow. Having lots of small shards is very inefficient so you will need to reduce this dramatically. Please read [this blog post](https://www.elastic.co/blog/how-many-shards-should-i-have-in-my-elasticsearch-cluster) for guidance.

---

<div class="post-metadata">

**Author:** ![Burga](https://avatars.discourse-cdn.com/v4/letter/b/9d8465/32.png) [@Burga](https://discuss.elastic.co/u/Burga)\
**Post date:** [August 9, 2020, 6:49am UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/5 "2020-08-09T06:49:47Z")

</div>

But can it be the reason for receiving this specific ERROR of timeout and causing data to be lost on almost all nodes , I mean Index data and not information regarding nodes ?

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [August 9, 2020, 12:47pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/6 "2020-08-09T12:47:56Z")

</div>

If getting node statistics time out it is possible that other cluster operations like creating new indices or relocating shards may be slow too which could cause problems.

---

<div class="post-metadata">

**Author:** ![Burga](https://avatars.discourse-cdn.com/v4/letter/b/9d8465/32.png) [@Burga](https://discuss.elastic.co/u/Burga)\
**Post date:** [August 9, 2020, 5:32pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/7 "2020-08-09T17:32:49Z")

</div>

Thank you .

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 6, 2020, 5:32pm UTC](https://discuss.elastic.co/t/error-o-e-x-m-c-n-nodestatscollector-collector-node-stats-timed-out-when-collecting-data/244194/8 "2020-09-06T17:32:49Z")

</div>

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