Courier Fetch: 5 of 70 shards failed - Please help

Elastic Stack Elasticsearch
1

Hi, I am seeing the following errors in my ElasticSearch 1.7.6 production.log file when accessing kibana. On the GUI it notes "Courier Fetch: 5 or 70 shards failed" and the following appear in the service logs. I'm happy to provide any other data necessary but I'm very new to ES so if you would please tell me how to get any data requested as well :slight_smile:

[2017-05-03 09:56:53,161][DEBUG][action.search.type       ] [dmpprod-els2] [pixel_hit_logs_v2-2017-04-27][0], node[_X0KpwgvQO2JNnzshZdk9A], [R], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@7e561e86] lastShard [true]
    org.elasticsearch.transport.RemoteTransportException: [dmpprod-els1][inet[/10.0.135.189:9300]][indices:data/read/search[phase/query]]
    Caused by: java.lang.ClassCastException

 [2017-05-03 09:56:53,208][DEBUG][action.search.type       ] [dmpprod-els2] [pixel_hit_logs_v2-2017-04-27][3], node[_X0KpwgvQO2JNnzshZdk9A], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@7e561e86] lastShard [true]
    org.elasticsearch.transport.RemoteTransportException: [dmpprod-els1][inet[/10.0.135.189:9300]][indices:data/read/search[phase/query]]
    Caused by: java.lang.ClassCastException

[2017-05-03 09:56:53,224][DEBUG][action.search.type       ] [dmpprod-els2] [pixel_hit_logs_v2-2017-04-27][4], node[_X0KpwgvQO2JNnzshZdk9A], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@7e561e86] lastShard [true]
    org.elasticsearch.transport.RemoteTransportException: [dmpprod-els1][inet[/10.0.135.189:9300]][indices:data/read/search[phase/query]]
    Caused by: java.lang.ClassCastException

 [2017-05-03 09:56:53,244][DEBUG][action.search.type       ] [dmpprod-els2] [pixel_hit_logs_v2-2017-04-27][2], node[E4r0S7vSSwKq1L3NQDgguA], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@7e561e86] lastShard [true]
    java.lang.ClassCastException

   [2017-05-03 09:56:53,244][DEBUG][action.search.type       ] [dmpprod-els2] [pixel_hit_logs_v2-2017-04-27][1], node[E4r0S7vSSwKq1L3NQDgguA], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@7e561e86] lastShard [true]
    java.lang.ClassCastException
2

You should really upgrade, that version is EOL - Elastic Product End of Life Dates | Elastic

Is there more to these errors?

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