Am getting following error in logstash. while running a JDBC Plugin
An unknown error occurred sending a bulk request to Elasticsearch. We will retry indefinitely {:error_message=>"No serializer found for class java.io.ByteArrayInputStream and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: oracle.sql.INTERVALDS["stream"])", :error_class=>"LogStash::Json::GeneratorError", :backtrace=>["C:/Users//dev/logstash-5.5.0/logstash-core/lib/logstash/json.rb:52:in jruby_dump'", "C:/Users/*****/dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/http_client.rb:116:inbulk'", "org/jruby/RubyArray.java:2414:in map'", "C:/Users/*****/dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/http_client.rb:115:inbulk'", "org/jruby/RubyArray.java:1613:in each'", "C:/Users/*****/dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/http_client.rb:114:inbulk'", "C:/Users//dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/common.rb:225:in safe_bulk'", "C:/Users/*****/dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/common.rb:123:insubmit'", "C:/Users//dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/common.rb:91:in retrying_submit'", "C:/Users/*****/dev/logstash-5.5.0/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-7.3.6-java/lib/logstash/outputs/elasticsearch/common.rb:42:inmulti_receive'", "C:/Users//dev/logstash-5.5.0/logstash-core/lib/logstash/output_delegator_strategies/shared.rb:13:in multi_receive'", "C:/Users/*****/dev/logstash-5.5.0/logstash-core/lib/logstash/output_delegator.rb:47:inmulti_receive'", "C:/Users//dev/logstash-5.5.0/logstash-core/lib/logstash/pipeline.rb:420:in output_batch'", "org/jruby/RubyHash.java:1342:ineach'", "C:/Users//dev/logstash-5.5.0/logstash-core/lib/logstash/pipeline.rb:419:in output_batch'", "C:/Users/*****/dev/logstash-5.5.0/logstash-core/lib/logstash/pipeline.rb:365:inworker_loop'", "C:/Users/*****/dev/logstash-5.5.0/logstash-core/lib/logstash/pipeline.rb:330:in `start_workers'"]}