# Logstash webhdfs output error
**URL:** https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832
**Category:** Logstash
**Created:** [July 19, 2016, 7:10am UTC](https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832 "2016-07-19T07:10:51Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@lizhenmxcz](https://discuss.elastic.co/u/lizhenmxcz)
#### Post date: [July 19, 2016, 7:10am UTC](https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832/1 "2016-07-19T07:10:51Z")
here is the config:
input {
redis {
host =\> "127.0.0.1"
port =\> "6379"
key =\> "abc"
data\_type =\> "list"
codec =\> "plain"
}
}
output {
webhdfs {
host =\> "[192.168.xx.xxx](http://192.168.xx.xxx)"
path =\> "/abc.log"
user =\> "hdfs"
}
the error info:
Failed to flush outgoing items {:outgoing\_count=\>500, :exception=\>"NoMethodError", :backtrace=\>["/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-event-2.3.4-java/lib/logstash/event.rb:105:in `to_s'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-codec-line-2.1.2/lib/logstash/codecs/line.rb:56:in`encode'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-2.0.4/lib/logstash/outputs/webhdfs.rb:179:in `flush'", "org/jruby/RubyArray.java:2409:in`collect'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-2.0.4/lib/logstash/outputs/webhdfs.rb:173:in `flush'", "/opt/logstash-2.3.4/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-2.3.4/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:216:in`buffer\_flush'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:193:in `buffer_flush'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/stud-0.0.22/lib/stud/buffer.rb:159:in`buffer\_receive'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-output-webhdfs-2.0.4/lib/logstash/outputs/webhdfs.rb:166:in `receive'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/outputs/base.rb:83:in`multi\_receive'", "org/jruby/RubyArray.java:1613:in `each'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/outputs/base.rb:83:in`multi\_receive'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/output\_delegator.rb:130:in `worker_multi_receive'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/output_delegator.rb:114:in`multi\_receive'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/pipeline.rb:301:in `output_batch'", "org/jruby/RubyHash.java:1342:in`each'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/pipeline.rb:301:in `output_batch'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/pipeline.rb:232:in`worker\_loop'", "/opt/logstash-2.3.4/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.4-java/lib/logstash/pipeline.rb:201:in `start\_workers'"], :level=\>:warn}
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [July 19, 2016, 10:02am UTC](https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832/2 "2016-07-19T10:02:37Z")
Looks like it can't connect for some reason.
Try checking the logs on the web HDFS side?
---
### Author:  [@lizhenmxcz](https://discuss.elastic.co/u/lizhenmxcz)
#### Post date: [July 20, 2016, 9:24am UTC](https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832/3 "2016-07-20T09:24:07Z")
@warkolm. thanks. I have checked the web hdfs and i works well . I have create a issue, [https://github.com/elastic/logstash/issues/5664](https://github.com/elastic/logstash/issues/5664) . Thanks a lot for your feedback.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:47am UTC](https://discuss.elastic.co/t/logstash-webhdfs-output-error/55832/4 "2017-07-06T04:47:21Z")