NoClassDefFoundError for IngestPlugin in Elasticsearch

Elastic Stack Elasticsearch
1

I created a library for sentiment analysis in Java. The whole source code is here.

I wanted to add this implementation as a part of an ingestion pipeline using Ingestion plugin in Elasticsearch. For that I designed a plugin which is still development stage and the source is available here.

The plugin installs correctly but when I send the following request to ES:

{
  "pipeline": {
    "description": "Apply VADER sentiment analysis on text.",
    "processors": [
      {
        "vader_analyzer": {
          "field": "input",
          "positive_polarity": "positive_polarity",
          "negative_polarity": "negative_polarity",
          "neutral_polarity": "neutral_polarity",
          "compound_polarity": "compound_polarity"
        }
      }
    ],
    "version": 1
  },
  "docs": [
    {
      "_source": {
        "input": "The plot was good, but the characters are uncompelling and the dialog is not great."
      }
    }
  ]
}

I get the following error:

java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
        at com.vader.sentiment.analyzer.SentimentAnalyzer.boostByExclamation(SentimentAnalyzer.java:335) ~[?:?]
        at com.vader.sentiment.analyzer.SentimentAnalyzer.boostByPunctuation(SentimentAnalyzer.java:331) ~[?:?]
        at com.vader.sentiment.analyzer.SentimentAnalyzer.polarityScores(SentimentAnalyzer.java:265) ~[?:?]
        at com.vader.sentiment.analyzer.SentimentAnalyzer.getSentiment(SentimentAnalyzer.java:235) ~[?:?]
        at com.vader.sentiment.analyzer.SentimentAnalyzer.analyse(SentimentAnalyzer.java:54) ~[?:?]
        at org.elasticsearch.plugin.ingest.vader.processor.VaderProcessor.execute(VaderProcessor.java:93) ~[?:?]
        at org.elasticsearch.action.ingest.TrackingResultProcessor.execute(TrackingResultProcessor.java:47) ~[elasticsearch-5.2.1.jar:5.2.1]
        at org.elasticsearch.ingest.CompoundProcessor.execute(CompoundProcessor.java:100) ~[elasticsearch-5.2.1.jar:5.2.1]
        at org.elasticsearch.action.ingest.SimulateExecutionService.executeDocument(SimulateExecutionService.java:49) ~[elasticsearch-5.2.1.jar:5.2.1]
        at org.elasticsearch.action.ingest.SimulateExecutionService$1.doRun(SimulateExecutionService.java:70) ~[elasticsearch-5.2.1.jar:5.2.1]
        at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:596) ~[elasticsearch-5.2.1.jar:5.2.1]
        at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) ~[elasticsearch-5.2.1.jar:5.2.1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[?:1.8.0_121]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[?:1.8.0_121]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_121]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_121]
        at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:814) ~[?:1.8.0_121]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_121]
        ... 15 more

POM file for Sentiment Analysis Library.

POM file for Ingest Plugin.

I am not sure how to solve this issue?

2

Your zip file does not contain common-lang jar. Probably because of the runtime scope you put in pom.xml

3

Thanks for the reply.
Your suggestion worked!