logstash报Message too long后退出

logstash5.6.2 和logstash 6.2.3都出现了这个错误。输出到kafka和es5.6.2还有一个udp用于自建的日志统计分析。其中kafka输出暂时有问题。
 
详细错误如下:
 [2019-03-05T08:49:10,072][INFO ][logstash.outputs.kafka   ] Sending batch to Kafka failed. Will retry after a delay. {:batch_size=>5, :failures=>5, :sleep=>0.0}
[2019-03-05T08:49:10,072][INFO ][logstash.outputs.kafka   ] Exhausted user-configured retry count when sending to Kafka. Dropping these events. {:max_retries=>0, :drop_count=>5}
[2019-03-05T08:49:19,668][FATAL][logstash.runner          ] An unexpected error occurred! {:error=>#<Errno::EMSGSIZE: Message too long - No message available>, :backtrace=>["org/jruby/ext/socket/RubyUDPSocket.java:438:in `send'", "XXXX/logstash/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-output-udp-3.0.5/lib/logstash/outputs/udp.rb:24:in `block in register'", "XXXX/logstash/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-codec-json-3.0.5/lib/logstash/codecs/json.rb:42:in `encode'", "XXXX/logstash/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-output-udp-3.0.5/lib/logstash/outputs/udp.rb:31:in `receive'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/outputs/base.rb:92:in `block in multi_receive'", "org/jruby/RubyArray.java:1734:in `each'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/outputs/base.rb:92:in `multi_receive'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/output_delegator_strategies/legacy.rb:22:in `multi_receive'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/output_delegator.rb:49:in `multi_receive'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:479:in `block in output_batch'", "org/jruby/RubyHash.java:1343:in `each'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:478:in `output_batch'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:430:in `worker_loop'", "XXXX/logstash/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:385:in `block in start_workers'"]}
[2019-03-05T08:49:19,978][ERROR][org.logstash.Logstash    ] java.lang.IllegalStateException: org.jruby.exceptions.RaiseException: (SystemExit) exit
 
我在filter里面加了truncate,还是没有解决问题，有人知道原因吗？