# 'Error in load generator', The provided corpus does not match any of the corpora

**URL:** <https://discuss.elastic.co/t/error-in-load-generator-the-provided-corpus-does-not-match-any-of-the-corpora/185540>\
**Category:** Elasticsearch\
**Tags:** rally\
**Created:** [June 13, 2019, 5:17am UTC](https://discuss.elastic.co/t/error-in-load-generator-the-provided-corpus-does-not-match-any-of-the-corpora/185540 "2019-06-13T05:17:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dileep\_Kumar\_Dora](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dileep_kumar_dora/32/48035_2.png) [@Dileep\_Kumar\_Dora](https://discuss.elastic.co/u/Dileep_Kumar_Dora)\
**Post date:** [June 13, 2019, 5:17am UTC](https://discuss.elastic.co/t/error-in-load-generator-the-provided-corpus-does-not-match-any-of-the-corpora/185540/1 "2019-06-13T05:17:02Z")

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I have a custom tracks where I have 2 corpora defined lets say dataset1 and dataset2, when I run the challenge rally is recognising the corpora and preparing offset tables also in the corresponding directory. But it's throwing error message saying  
**esrally.exceptions.RallyError: ('Error in load generator', The provided corpus ['corpora1', 'corpora2'] does not match any of the corpora ['corpora1', 'corpora2'].)**

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**Author:** ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis)\
**Post date:** [June 13, 2019, 10:44am UTC](https://discuss.elastic.co/t/error-in-load-generator-the-provided-corpus-does-not-match-any-of-the-corpora/185540/2 "2019-06-13T10:44:38Z")

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Hi @Dileep_Kumar_Dora,

Can you paste your track here or in a link as it's really difficult to diagnose the issue without seeing how it looks like?

Thanks,  
Dimitris

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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:** [July 11, 2019, 10:44am UTC](https://discuss.elastic.co/t/error-in-load-generator-the-provided-corpus-does-not-match-any-of-the-corpora/185540/3 "2019-07-11T10:44:38Z")

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