# Elastic starts but fails immediately

**URL:** <https://discuss.elastic.co/t/elastic-starts-but-fails-immediately/83973>\
**Category:** Elasticsearch\
**Created:** [April 28, 2017, 6:38am UTC](https://discuss.elastic.co/t/elastic-starts-but-fails-immediately/83973 "2017-04-28T06:38:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sLuvpreet33](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sluvpreet33/32/50626_2.png) [@sLuvpreet33](https://discuss.elastic.co/u/sLuvpreet33)\
**Post date:** [April 28, 2017, 6:38am UTC](https://discuss.elastic.co/t/elastic-starts-but-fails-immediately/83973/1 "2017-04-28T06:38:02Z")

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When I start elasticsearch, it is started for just like 20 seconds and goes down, with this error in logs,

```
[2017-04-28T12:03:43,334][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [] fatal error in thread [elasticsearch[DH5vVSg][bulk][T#2]], exiting
java.lang.NoClassDefFoundError: Could not initialize class org.apache.lucene.analysis.standard.StandardTokenizerImpl
at org.apache.lucene.analysis.standard.StandardTokenizer.init(StandardTokenizer.java:151) ~[lucene-core-6.4.2.jar:6.4.2 34a975ca3d4bd7fa121340e5bcbf165929e0542f - ishan - 2017-03-01 23:25:07]

```

Also, what is the minimum limit for the heap space allocated in `jvm.options` file ?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 26, 2017, 6:43am UTC](https://discuss.elastic.co/t/elastic-starts-but-fails-immediately/83973/2 "2017-05-26T06:43:59Z")

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Closed on May 26, 2017, 6:43am UTC

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