# Engineer Class Lab 4.1 - Missing data

**URL:** <https://discuss.elastic.co/t/engineer-class-lab-4-1-missing-data/315719>\
**Category:** Elastic Training\
**Created:** [October 3, 2022, 8:03pm UTC](https://discuss.elastic.co/t/engineer-class-lab-4-1-missing-data/315719 "2022-10-03T20:03:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Kimberly](https://avatars.discourse-cdn.com/v4/letter/k/f4b2a3/32.png) [@Kimberly](https://discuss.elastic.co/u/Kimberly)\
**Post date:** [October 3, 2022, 8:03pm UTC](https://discuss.elastic.co/t/engineer-class-lab-4-1-missing-data/315719/1 "2022-10-03T20:03:12Z")

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For Item 9-11, I ran load\_webtraffic.sh, created a dataview for web\_traffic index and used @timestamp as the time field. I only found 1456190 hits from Apr 1, 00:00:00 thru Apr 30, 23:30:00 instead of 1462658 hits in the same range.

How shall I do for the next step? Can I re-run the script?

Tx

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**Author:** ![Kimberly](https://avatars.discourse-cdn.com/v4/letter/k/f4b2a3/32.png) [@Kimberly](https://discuss.elastic.co/u/Kimberly)\
**Post date:** [October 19, 2022, 10:34pm UTC](https://discuss.elastic.co/t/engineer-class-lab-4-1-missing-data/315719/2 "2022-10-19T22:34:45Z")

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Apparently there is a bug in Elasticsearch.  
If searching from Mar 31 thru Apr 30 then there will be 1,462,658 hits, otherwise from Apr 1 thru Apr 30 will be 1,456,190 hits only.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 18, 2022, 10:34pm UTC](https://discuss.elastic.co/t/engineer-class-lab-4-1-missing-data/315719/3 "2022-11-18T22:34:54Z")

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