# Bulk indexing: java.lang.NoClassDefFoundError: org.elasticsearch.ElasticsearchException when ActionRequestBuilder.get
**URL:** https://discuss.elastic.co/t/bulk-indexing-java-lang-noclassdeffounderror-org-elasticsearch-elasticsearchexception-when-actionrequestbuilder-get/77699
**Category:** Elasticsearch
**Created:** [March 7, 2017, 4:50pm UTC](https://discuss.elastic.co/t/bulk-indexing-java-lang-noclassdeffounderror-org-elasticsearch-elasticsearchexception-when-actionrequestbuilder-get/77699 "2017-03-07T16:50:52Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@christophe\_spielmann](https://discuss.elastic.co/u/christophe_spielmann)
#### Post date: [March 7, 2017, 4:50pm UTC](https://discuss.elastic.co/t/bulk-indexing-java-lang-noclassdeffounderror-org-elasticsearch-elasticsearchexception-when-actionrequestbuilder-get/77699/1 "2017-03-07T16:50:52Z")
elasticsearch 2.0
While performing a bulk indexation I got the following error during only one of my indexations:
Exception in thread "main" java.lang.NoClassDefFoundError: org.elasticsearch.ElasticsearchException
at org.elasticsearch.action.support.AdapterActionFuture.rethrowExecutionException(AdapterActionFuture.java:93)
at org.elasticsearch.action.support.AdapterActionFuture.actionGet(AdapterActionFuture.java:48)
at org.elasticsearch.action.ActionRequestBuilder.get(ActionRequestBuilder.java:67)
at lu.ibbl.elasticsearch.Indexer.indexJsonBulkAsBulkRequest(Indexer.java:172)
at lu.ibbl.elasticsearch.DataIndexerRunner.indexJsonBulk(DataIndexerRunner.java:228)
at lu.ibbl.elasticsearch.DataIndexerRunner.extractAllFromCacheAndIndexAsChunk(DataIndexerRunner.java:154)
at lu.ibbl.elasticsearch.DataIndexerRunner.main(DataIndexerRunner.java:357)
it seems to be random error as this piece of code has been running for ages.
BulkRequestBuilder bulkRequest = esClient.prepareBulk();
.....
BulkResponse bulkResponse = bulkRequest.get();
I don't find any log that would be useful.
Any clue ?
I will see tonight when the full indexation runs again if I have the same issue.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 4, 2017, 4:50pm UTC](https://discuss.elastic.co/t/bulk-indexing-java-lang-noclassdeffounderror-org-elasticsearch-elasticsearchexception-when-actionrequestbuilder-get/77699/2 "2017-04-04T16:50:59Z")
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