# \[WARN \]\[logstash.outputs.webhdfs \] Failed to flush outgoing items {:outgoing\_count=\>160, :exception=\>"WebHDFS::IOError"
**URL:** https://discuss.elastic.co/t/warn-logstash-outputs-webhdfs-failed-to-flush-outgoing-items-outgoing-count-160-exception-webhdfs-ioerror/95128
**Category:** Logstash
**Created:** [July 31, 2017, 7:05am UTC](https://discuss.elastic.co/t/warn-logstash-outputs-webhdfs-failed-to-flush-outgoing-items-outgoing-count-160-exception-webhdfs-ioerror/95128 "2017-07-31T07:05:14Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@regret](https://discuss.elastic.co/u/regret)
#### Post date: [July 31, 2017, 7:05am UTC](https://discuss.elastic.co/t/warn-logstash-outputs-webhdfs-failed-to-flush-outgoing-items-outgoing-count-160-exception-webhdfs-ioerror/95128/1 "2017-07-31T07:05:15Z")
Dear all:
When I use logstash-output-webhdfs plugin to archive logs into hdfs, I met below error occasionly(not always). Does anyone know what happened and how to fix this ?
[WARN][logstash.outputs.webhdfs] Failed to flush outgoing items {:outgoing\_count=\>160, :exception=\>"WebHDFS::IOError", :backtrace=\>["/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/webhdfs-0.8.0/lib/webhdfs/client\_v1.rb:401:in `request'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/webhdfs-0.8.0/lib/webhdfs/client_v1.rb:270:in`operate\_requests'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/webhdfs-0.8.0/lib/webhdfs/client\_v1.rb:73:in `create'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-3.0.2/lib/logstash/outputs/webhdfs.rb:210:in`write\_data'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-3.0.2/lib/logstash/outputs/webhdfs.rb:205:in `write_data'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-3.0.2/lib/logstash/outputs/webhdfs.rb:195:in`flush'", "org/jruby/RubyHash.java:1342:in `each'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-3.0.2/lib/logstash/outputs/webhdfs.rb:183:in`flush'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:219:in `buffer_flush'", "org/jruby/RubyHash.java:1342:in`each'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:216:in `buffer_flush'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:193:in`buffer\_flush'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:112:in `buffer_initialize'", "org/jruby/RubyKernel.java:1479:in`loop'", "/opt/logstash/logstash-5.2.2/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:110:in `buffer\_initialize'"]}
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 28, 2017, 7:05am UTC](https://discuss.elastic.co/t/warn-logstash-outputs-webhdfs-failed-to-flush-outgoing-items-outgoing-count-160-exception-webhdfs-ioerror/95128/2 "2017-08-28T07:05:20Z")
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