# An unknown error occurred sending a bulk request

**URL:** <https://discuss.elastic.co/t/an-unknown-error-occurred-sending-a-bulk-request/104677>\
**Category:** Logstash\
**Created:** [October 20, 2017, 9:02am UTC](https://discuss.elastic.co/t/an-unknown-error-occurred-sending-a-bulk-request/104677 "2017-10-20T09:02:10Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![lmalossi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lmalossi/32/14766_2.png) [@lmalossi](https://discuss.elastic.co/u/lmalossi)\
**Post date:** [October 20, 2017, 9:02am UTC](https://discuss.elastic.co/t/an-unknown-error-occurred-sending-a-bulk-request/104677/1 "2017-10-20T09:02:10Z")

</div>

Hi,  
after upgrading logstash to 5.6.3 I'm getting the following error. I'm using JDBC Plugin

> [2017-10-20T10:43:10,868][ERROR][logstash.outputs.elasticsearch] An unknown error occurred sending a bulk request to Elasticsearch. We will retry indefinitely {:error\_message=\>"""\xCE"" from ASCII-8BIT to UTF-8", :error\_class=\>"LogStash::Json::GeneratorError", :backtrace=\>["/usr/share/logstash/logstash-core/lib/logstash/json.rb:52:in `jruby_dump'", "/usr/share/logstash/logstash-core/lib/logstash/json.rb:49:in `jruby\_dump'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/http\_client.rb:115:in `bulk'", "org/jruby/RubyArray.java:2414:in `map'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/http\_client.rb:114:in `bulk'", "org/jruby/RubyArray.java:1613:in `each'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/http\_client.rb:113:in `bulk'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/common.rb:221:in `safe\_bulk'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/common.rb:119:in `submit'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/common.rb:87:in `retrying\_submit'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.4.2-java/lib/logstash/outputs/elasticsearch/common.rb:38:in `multi_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output_delegator_strategies/shared.rb:13:in `multi\_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output\_delegator.rb:49:in `multi_receive'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:434:in `output\_batch'", "org/jruby/RubyHash.java:1342:in `each'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:433:in `output\_batch'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:381:in `worker_loop'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:342:in `start\_workers'"]}

---

<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:** [November 17, 2017, 9:02am UTC](https://discuss.elastic.co/t/an-unknown-error-occurred-sending-a-bulk-request/104677/2 "2017-11-17T09:02:16Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.