# Extract metadata is very slow on a wide file

**URL:** <https://forum.cloverdx.com/t/extract-metadata-is-very-slow-on-a-wide-file/1689>\
**Category:** CloverDX Platform\
**Created:** [November 3, 2015, 12:00am UTC](https://forum.cloverdx.com/t/extract-metadata-is-very-slow-on-a-wide-file/1689 "2015-11-03T00:00:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aaron\_lg](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@aaron\_lg](https://forum.cloverdx.com/u/aaron_lg)\
**Post date:** [November 3, 2015, 12:00am UTC](https://forum.cloverdx.com/t/extract-metadata-is-very-slow-on-a-wide-file/1689/1 "2015-11-03T00:00:00Z")

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Hi,

I’m trying to extract metadata from a CSV file which has ~3,000 columns and ~30,000 rows.

This takes upwards of 10 minutes and causes CloverETL to hang while it runs.

I’m running Ubuntu 14.04 on Lenovo laptop with an 8 core Intel i7 and 16GB of RAM - I notice one of the cores stays maxed out at 100% for the whole time.

I appreciate that ~3,000 columns is a rather wide file, but this still seems excessively long.

Am I missing any settings I can change to improve the performance?

Cheers,  
Aaron

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**Author:** ![Lukas\_Cholasta](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.cloverdx.com/lukas_cholasta/32/166_2.png) [@Lukas\_Cholasta](https://forum.cloverdx.com/u/Lukas_Cholasta)\
**Post date:** [November 11, 2015, 12:38pm UTC](https://forum.cloverdx.com/t/extract-metadata-is-very-slow-on-a-wide-file/1689/2 "2015-11-11T12:38:07Z")

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Hi

This is a known issue which is already reported [here](https://bug.javlin.eu/browse/CLO-7346). We plan to fix this in version 4.2.0-M1. Unfortunately there is nothing else I can do in this matter until the release. I would like to apologize for any inconveniences.

Best regards