# Disable SentinelArrays for CSV.read

**URL:** <https://discourse.julialang.org/t/disable-sentinelarrays-for-csv-read/54843>\
**Category:** General Usage\
**Tags:** csv\
**Created:** [February 8, 2021, 2:14pm UTC](https://discourse.julialang.org/t/disable-sentinelarrays-for-csv-read/54843 "2021-02-08T14:14:39Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![bkamins](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bkamins/32/208538_2.png) [@bkamins](https://discourse.julialang.org/u/bkamins)\
**Post date:** [January 21, 2022, 5:40pm UTC](https://discourse.julialang.org/t/disable-sentinelarrays-for-csv-read/54843/6 "2022-01-21T17:40:56Z")

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> [@jondea](#):
>
> The columns became chained sentinel arrays, and GLM complained.

This will be fixed soon.

In general if you want to avoid `SentinelVector` (which often makes sense from my experience) set `CSV.read` to use a single thread when reading the data in (it will then be a bit slower but usually acceptably fast).

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