# com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: com/carrotsearch/hppc/IntSet

**URL:** <https://discuss.elastic.co/t/com-google-common-util-concurrent-executionerror-java-lang-noclassdeffounderror-com-carrotsearch-hppc-intset/164238>\
**Category:** Elasticsearch\
**Created:** [January 15, 2019, 5:28am UTC](https://discuss.elastic.co/t/com-google-common-util-concurrent-executionerror-java-lang-noclassdeffounderror-com-carrotsearch-hppc-intset/164238 "2019-01-15T05:28:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dale/32/39776_2.png) [@Dale](https://discuss.elastic.co/u/Dale)\
**Post date:** [January 15, 2019, 5:28am UTC](https://discuss.elastic.co/t/com-google-common-util-concurrent-executionerror-java-lang-noclassdeffounderror-com-carrotsearch-hppc-intset/164238/1 "2019-01-15T05:28:50Z")

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Hi.Recently i try to use ES 2.4.4.But i am getting an Exception when i try to connect java client.I have no idea to solve this.Maven dependencies? I need your help.Thanks.  
Exception:  
com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: com/carrotsearch/hppc/IntSet

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<div class="post-metadata">

**Author:** ![Dale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dale/32/39776_2.png) [@Dale](https://discuss.elastic.co/u/Dale)\
**Post date:** [January 15, 2019, 7:41am UTC](https://discuss.elastic.co/t/com-google-common-util-concurrent-executionerror-java-lang-noclassdeffounderror-com-carrotsearch-hppc-intset/164238/2 "2019-01-15T07:41:09Z")

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Perhaps i need to restart es cluster. I just restart my cluster ,and then try to execute java client. I did not see the same exception,

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 12, 2019, 7:41am UTC](https://discuss.elastic.co/t/com-google-common-util-concurrent-executionerror-java-lang-noclassdeffounderror-com-carrotsearch-hppc-intset/164238/3 "2019-02-12T07:41:13Z")

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