How To Solve Issues Related to Log – Unable to shutdown GCE Http Transport

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Elasticsearch Error Guide In Page Navigation :

Troubleshooting Background – start here to get the full picture       
Related Issues – selected resources on related issues  
Log Context – usefull for experts
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Troubleshooting background

To troubleshoot Elasticsearch log “Unable to shutdown GCE Http Transport” it’s important to know common problems related to Elasticsearch concepts: cloud-aws, discovery-gce, metadata, plugins. See below-detailed explanations complete with common problems, examples and useful tips.

Metadata in Elasticsearch

What it is

Metadata is information about the data. In Elasticsearch, each document has associated metadata such as _id and _index meta fields.

Examples
  • Routing meta field:
    • _routing, a routing value that places a document in a particular shard.
  • Other meta field
    • _meta, not used by Elasticsearch but can be used to store application-specific metadata.
PUT index_01
{
  "mappings": {
    "_meta": { 
      "class": "App01::User01",
      "version": "01"
    }
  }
}

  • Identity meta fields: 
    _id , the id of the document, for example querying based on _id field
PUT index01/_doc/1
{
  "text": "Document with ID 1"
}
 
PUT index01/_doc/2
{
  "text": "Document with ID 2"
}
 
GET index01/_search
{
  "query": {
    "terms": {
      "_id": [ "1", "2" ] 
    }
  }
}


To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

ElasticSearch Out Of Memory
stackoverflow.com/questions/34601697/elasticsearch-out-of-memory

Number of Views : 22.91 K  Score on Stackoverflow : 9

Ansport Endpoint Is Not Connected
stackoverflow.com/questions/24966676/transport-endpoint-is-not-connected

 


Log Context

Log ”Unable to shutdown GCE Http Transport” classname is GceMetadataService.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

     protected void doStop() {
        if (gceHttpTransport != null) {
            try {
                gceHttpTransport.shutdown();
            } catch (IOException e) {
                logger.warn("unable to shutdown GCE Http Transport"; e);
            }
            gceHttpTransport = null;
        }
    }







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