# Static date conversion arbitrary failed

**URL:** <https://discuss.elastic.co/t/static-date-conversion-arbitrary-failed/250783>\
**Category:** Logstash\
**Created:** [October 2, 2020, 12:09pm UTC](https://discuss.elastic.co/t/static-date-conversion-arbitrary-failed/250783 "2020-10-02T12:09:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sesti](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@sesti](https://discuss.elastic.co/u/sesti)\
**Post date:** [October 2, 2020, 12:09pm UTC](https://discuss.elastic.co/t/static-date-conversion-arbitrary-failed/250783/1 "2020-10-02T12:09:39Z")

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For some reason I don't understand, logstash randomly fails to convert a date that doesn't change.  
`date format: Fri Oct 2 error message: error type mapper_parsiing_exception ... with format [strict_date_optionnal_time]`  
conversion failure rate is about 1 in 50

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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:** [October 30, 2020, 12:09pm UTC](https://discuss.elastic.co/t/static-date-conversion-arbitrary-failed/250783/2 "2020-10-30T12:09:44Z")

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