# Logstash not reading CSV file when running as CSV

**URL:** <https://discuss.elastic.co/t/logstash-not-reading-csv-file-when-running-as-csv/255374>\
**Category:** Logstash\
**Created:** [November 13, 2020, 7:27pm UTC](https://discuss.elastic.co/t/logstash-not-reading-csv-file-when-running-as-csv/255374 "2020-11-13T19:27:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [November 13, 2020, 7:46pm UTC](https://discuss.elastic.co/t/logstash-not-reading-csv-file-when-running-as-csv/255374/2 "2020-11-13T19:46:16Z")

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Set log.level to TRACE, then the filewatch module that the file input uses will log messages like [these](https://discuss.elastic.co/t/path-not-loading-in-logstash-7-3/196353/9) to tell you what it is doing.

On Windows, if you want to disable the persistence of the in-memory sincedb across restarts then you would use `sincedb_path => "NUL"`, not NULL.

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