# Elastic Rest-Client date format issues

**URL:** <https://discuss.elastic.co/t/elastic-rest-client-date-format-issues/242209>\
**Category:** Elasticsearch\
**Tags:** language-clients\
**Created:** [July 22, 2020, 2:01pm UTC](https://discuss.elastic.co/t/elastic-rest-client-date-format-issues/242209 "2020-07-22T14:01:29Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Dede\_Pessu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dede_pessu/32/44473_2.png) [@Dede\_Pessu](https://discuss.elastic.co/u/Dede_Pessu)\
**Post date:** [July 22, 2020, 2:01pm UTC](https://discuss.elastic.co/t/elastic-rest-client-date-format-issues/242209/1 "2020-07-22T14:01:29Z")

</div>

Sending data to elastic search via Rest client from a java application it it is complaining about the date format below is the stack trace that it being spit out.

```auto

    1. ElasticsearchStatusException[Elasticsearch exception [type=mapper_parsing_exception, reason=failed to parse field [start_time] of type [long] in document with id 'test_metric']]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=For input string: "2020-07-20T23:36:16.000Z"]];
    2. at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
    3. at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:2053)
    4. at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:2030)
    5. at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1777)
    6. at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1734)
    7. at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1696)
    8. at org.elasticsearch.client.RestHighLevelClient.index(RestHighLevelClient.java:928)
    9. at com.bah.cdssf.common.metric.filter.SampleMetricElasticClient.create(SampleMetricElasticClient.java:69)
    10. at com.bah.cdssf.common.metric.filter.SampleMetricElasticClientTest.testCreate(SampleMetricElasticClientTest.java:54)
    11. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    12. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    13. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    14. at java.lang.reflect.Method.invoke(Method.java:498)
    15. at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    16. at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    17. at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    18. at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    19. at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    20. at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    21. at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    22. at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    23. at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    24. at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    25. at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    26. at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    27. at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    28. at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    29. at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
    30. at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    31. at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    32. at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    33. at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
    34. Suppressed: org.elasticsearch.client.ResponseException: method [PUT], host [http://x.x.x.x:9200], URI [/metricbeat/doc/test_metric?timeout=1m], status line [HTTP/1.1 400 Bad Request]
    35. {"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"failed to parse field [start_time] of type [long] in document with id 'test_metric'"}],"type":"mapper_parsing_exception","reason":"failed to parse field [start_time] of type [long] in document with id 'test_metric'","caused_by":{"type":"illegal_argument_exception","reason":"For input string: \"2020-07-20T23:36:16.000Z\""}},"status":400}
    36. at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:936)
    37. at org.elasticsearch.client.RestClient.performRequest(RestClient.java:233)
    38. at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1764)
    39. ... 28 more
    40. Caused by: org.elasticsearch.client.ResponseException: method [PUT], host [http://x.x.x.x:9200], URI [/metricbeat/doc/test_metric?timeout=1m], status line [HTTP/1.1 400 Bad Request]
    41. {"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"failed to parse field [start_time] of type [long] in document with id 'test_metric'"}],"type":"mapper_parsing_exception","reason":"failed to parse field [start_time] of type [long] in document with id 'test_metric'","caused_by":{"type":"illegal_argument_exception","reason":"For input string: \"2020-07-20T23:36:16.000Z\""}},"status":400}
    42. at org.elasticsearch.client.RestClient$1.completed(RestClient.java:552)
    43. at org.elasticsearch.client.RestClient$1.completed(RestClient.java:537)
    44. at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:119)
    45. at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:177)
    46. at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:436)
    47. at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:326)
    48. at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:265)
    49. at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81)
    50. at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39)
    51. at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:114)
    52. at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
    53. at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
    54. at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
    55. at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
    56. at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
    57. at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:588)
    58. at java.lang.Thread.run(Thread.java:748)
    59. Caused by: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=For input string: "2020-07-20T23:36:16.000Z"]]
    60. at org.elasticsearch.ElasticsearchException.innerFromXContent(ElasticsearchException.java:509)
    61. at org.elasticsearch.ElasticsearchException.fromXContent(ElasticsearchException.java:420)
    62. at org.elasticsearch.ElasticsearchException.innerFromXContent(ElasticsearchException.java:450)
    63. at org.elasticsearch.ElasticsearchException.failureFromXContent(ElasticsearchException.java:616)
    64. at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:169)
    65. ... 31 more

```

In my code i am using `java.util.Date` class and using the `simpleDateFormat` to parse the `Date.toString()` output, and the format of the date looks similar to what i see in already indexed date values `2020-07-20T23:36:16.000Z` so not sure what the issue is here, any ideas?

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [July 22, 2020, 10:51pm UTC](https://discuss.elastic.co/t/elastic-rest-client-date-format-issues/242209/2 "2020-07-22T22:51:39Z")

</div>

`start_time` seems to be a long in your mapping and not a `date`.

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<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:** [August 19, 2020, 10:52pm UTC](https://discuss.elastic.co/t/elastic-rest-client-date-format-issues/242209/3 "2020-08-19T22:52:03Z")

</div>

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