# Logstash avro decode avro fails
**URL:** https://discuss.elastic.co/t/logstash-avro-decode-avro-fails/146565
**Category:** Logstash
**Created:** [August 29, 2018, 5:07pm UTC](https://discuss.elastic.co/t/logstash-avro-decode-avro-fails/146565 "2018-08-29T17:07:01Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Prateek\_Bhati](https://discuss.elastic.co/u/Prateek_Bhati)
#### Post date: [August 29, 2018, 5:07pm UTC](https://discuss.elastic.co/t/logstash-avro-decode-avro-fails/146565/1 "2018-08-29T17:07:01Z")
An unexpected error occurred! {:error=\>#\, :backtrace=\>["org/jruby/ext/stringio/StringIO.java:829:in `read'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:106:in`read'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:93:in `read_bytes'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:99:in`read\_string'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:361:in `read_map'", "org/jruby/RubyFixnum.java:275:in`times'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:360:in `read_map'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:308:in`read\_data'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:384:in `read_record'", "org/jruby/RubyArray.java:1613:in`each'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:382:in `read_record'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:310:in`read\_data'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:384:in `read_record'", "org/jruby/RubyArray.java:1613:in`each'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:382:in `read_record'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:310:in`read\_data'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/avro-1.8.2/lib/avro/io.rb:275:in `read'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/logstash-codec-avro-3.2.3-java/lib/logstash/codecs/avro.rb:77:in`decode'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/logstash-input-kafka-5.1.6/lib/logstash/inputs/kafka.rb:241:in `thread_runner'", "file:/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/jruby/lib/jruby.jar!/jruby/java/java_ext/java.lang.rb:12:in`each'", "/local/apps/rtdtuser/resources/elk/logstash-5.3.1/vendor/bundle/jruby/1.9/gems/logstash-input-kafka-5.1.6/lib/logstash/inputs/kafka.rb:240:in `thread\_runner'"]}
Logstash 6.2.2
Kafka 2.11-1.1.1
messages serialized using avro serialization
kafka input
```
key_deserializer_class => "org.apache.kafka.common.serialization.ByteArrayDeserializer"
value_deserializer_class => "org.apache.kafka.common.serialization.ByteArrayDeserializer"
codec => avro {
schema_uri => "tweet.schema"
}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 26, 2018, 5:07pm UTC](https://discuss.elastic.co/t/logstash-avro-decode-avro-fails/146565/2 "2018-09-26T17:07:49Z")
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