# ClassCastException with histogram in Kibana **URL:** \ **Category:** Elasticsearch\ **Created:** [September 20, 2013, 3:06pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705 "2013-09-20T15:06:09Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![David\_Kincaid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/david_kincaid/32/2181_2.png) [@David\_Kincaid](https://discuss.elastic.co/u/David_Kincaid)\ **Post date:** [September 20, 2013, 3:06pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/1 "2013-09-20T15:06:09Z")
I'm getting the following error when trying to add a histogram panel to a Kibana dashboard. Could someone help me interpret what the problem might be? ClassCastException[org.elasticsearch.index.fielddata.plain.PagedBytesIndexFieldData cannot be cast to org.elasticsearch.index.fielddata.IndexNumericFieldData -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![polyfractal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/polyfractal/32/48162_2.png) [@polyfractal](https://discuss.elastic.co/u/polyfractal)\ **Post date:** [September 21, 2013, 4:49pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/2 "2013-09-21T16:49:50Z")
Well, at a high level, PagedBytesIndexFieldData is a data structure that holds strings in memory, while IndexNumericFieldData is for numeric values. So it appears that something is trying to use string field data for a numeric operation. Can you provide the mapping of your index, and the histogram that you are trying to create (on what fields)? What version of Elasticsearch are you using? -Zach On Friday, September 20, 2013 11:06:09 AM UTC-4, David Kincaid wrote: > I'm getting the following error when trying to add a histogram panel to a > Kibana dashboard. Could someone help me interpret what the problem might be? > > ClassCastException[org.elasticsearch.index.fielddata.plain.PagedBytesIndexFieldData > cannot be cast to org.elasticsearch.index.fielddata.IndexNumericFieldData -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![David\_Kincaid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/david_kincaid/32/2181_2.png) [@David\_Kincaid](https://discuss.elastic.co/u/David_Kincaid)\ **Post date:** [September 21, 2013, 6:51pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/3 "2013-09-21T18:51:59Z")
Thanks for the info. As soon as I looked at the mapping to send it to the list I saw the problem. The field that I was trying to create the histogram on is supposed to be a date, but it is actually a string. Thanks for pointing me in the right direction. Dave On Saturday, September 21, 2013 12:49:50 PM UTC-4, Zachary Tong wrote: > Well, at a high level, PagedBytesIndexFieldData is a data structure that > holds strings in memory, while IndexNumericFieldData is for numeric values. > So it appears that something is trying to use string field data for a > numeric operation. > > Can you provide the mapping of your index, and the histogram that you are > trying to create (on what fields)? What version of Elasticsearch are you > using? > > -Zach > > On Friday, September 20, 2013 11:06:09 AM UTC-4, David Kincaid wrote: > > > I'm getting the following error when trying to add a histogram panel to a > > Kibana dashboard. Could someone help me interpret what the problem might be? > > > > ClassCastException[org.elasticsearch.index.fielddata.plain.PagedBytesIndexFieldData > > cannot be cast to org.elasticsearch.index.fielddata.IndexNumericFieldData -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![polyfractal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/polyfractal/32/48162_2.png) [@polyfractal](https://discuss.elastic.co/u/polyfractal)\ **Post date:** [September 21, 2013, 6:59pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/4 "2013-09-21T18:59:07Z")
Awesome, glad you sorted out the problem =) -Zach On Sat, Sep 21, 2013 at 2:51 PM, David Kincaid [kincaid.dave@gmail.com](mailto:kincaid.dave@gmail.com)wrote: > Thanks for the info. As soon as I looked at the mapping to send it to the > list I saw the problem. The field that I was trying to create the histogram > on is supposed to be a date, but it is actually a string. Thanks for > pointing me in the right direction. > > Dave > > On Saturday, September 21, 2013 12:49:50 PM UTC-4, Zachary Tong wrote: > > > Well, at a high level, PagedBytesIndexFieldData is a data structure that > > holds strings in memory, while IndexNumericFieldData is for numeric values. > > So it appears that something is trying to use string field data for a > > numeric operation. > > > > Can you provide the mapping of your index, and the histogram that you are > > trying to create (on what fields)? What version of Elasticsearch are you > > using? > > > > -Zach > > > > On Friday, September 20, 2013 11:06:09 AM UTC-4, David Kincaid wrote: > > > > > I'm getting the following error when trying to add a histogram panel to > > > a Kibana dashboard. Could someone help me interpret what the problem might > > > be? > > > > > > ClassCastException[org.\*\*elasticsearch.index.fielddata.\*\*plain.PagedBytesIndexFieldData > > > cannot be cast to org.elasticsearch.index. **fielddata.** > > > IndexNumericFieldData > > > > -- > > You received this message because you are subscribed to a topic in the > > Google Groups "elasticsearch" group. > > To unsubscribe from this topic, visit > > [https://groups.google.com/d/topic/elasticsearch/Ow\_9yVdihmg/unsubscribe](https://groups.google.com/d/topic/elasticsearch/Ow_9yVdihmg/unsubscribe). > > To unsubscribe from this group and all its topics, send an email to > > [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [September 22, 2013, 4:58pm UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/5 "2013-09-22T16:58:41Z")
Hey, can you provide us with some more information (or even issue a bug report), when this happens (providing mapping and your query should be sufficient). It makes more sense to return a valid error value (like "Dont use a string field, numeric needed") to the user instead of some weird class cast exception 🙂 Thanks! --Alex On Sat, Sep 21, 2013 at 8:51 PM, David Kincaid [kincaid.dave@gmail.com](mailto:kincaid.dave@gmail.com)wrote: > Thanks for the info. As soon as I looked at the mapping to send it to the > list I saw the problem. The field that I was trying to create the histogram > on is supposed to be a date, but it is actually a string. Thanks for > pointing me in the right direction. > > Dave > > On Saturday, September 21, 2013 12:49:50 PM UTC-4, Zachary Tong wrote: > > > Well, at a high level, PagedBytesIndexFieldData is a data structure that > > holds strings in memory, while IndexNumericFieldData is for numeric values. > > So it appears that something is trying to use string field data for a > > numeric operation. > > > > Can you provide the mapping of your index, and the histogram that you are > > trying to create (on what fields)? What version of Elasticsearch are you > > using? > > > > -Zach > > > > On Friday, September 20, 2013 11:06:09 AM UTC-4, David Kincaid wrote: > > > > > I'm getting the following error when trying to add a histogram panel to > > > a Kibana dashboard. Could someone help me interpret what the problem might > > > be? > > > > > > ClassCastException[org.\*\*elasticsearch.index.fielddata.\*\*plain.PagedBytesIndexFieldData > > > cannot be cast to org.elasticsearch.index. **fielddata.** > > > IndexNumericFieldData > > > > -- > > You received this message because you are subscribed to the Google Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 2:15am UTC](https://discuss.elastic.co/t/classcastexception-with-histogram-in-kibana/13705/6 "2017-07-06T02:15:12Z")