# Tracing Errors In EsSpark **URL:** \ **Category:** Elasticsearch\ **Tags:** es-hadoop\ **Created:** [February 2, 2016, 8:40pm UTC](https://discuss.elastic.co/t/tracing-errors-in-esspark/40785 "2016-02-02T20:40:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![laxatives](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@laxatives](https://discuss.elastic.co/u/laxatives)\ **Post date:** [February 2, 2016, 8:40pm UTC](https://discuss.elastic.co/t/tracing-errors-in-esspark/40785/1 "2016-02-02T20:40:00Z")
I'm getting a NumberFormatException[For input string: "null"] from a call to EsSpark.saveToEs. Is there a simple way for me get more detail from this error message? The RDD its trying to save from is very large and I can't find the particular mapping that this is failing on easily. ---
**Author:** ![costin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/costin/32/44950_2.png) [@costin](https://discuss.elastic.co/u/costin)\ **Post date:** [February 21, 2016, 5:36pm UTC](https://discuss.elastic.co/t/tracing-errors-in-esspark/40785/2 "2016-02-21T17:36:47Z")
Unfortunately there's not much information to pass around especially in case of an `RDD` since the connector does not know whether of if there's any information before or after the field causing the error. Further more, in case of an RDD there's no field name to point at - however we could look at the backing partition (not sure how much helps though). That being said, anything in particular that you are looking for? Anything that would help out tracking down the error? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:26pm UTC](https://discuss.elastic.co/t/tracing-errors-in-esspark/40785/3 "2017-07-06T13:26:12Z")
Closed on July 6, 2017, 1:26pm UTC