# Not able to write to vds

**URL:** <https://discuss.hail.is/t/not-able-to-write-to-vds/269>\
**Category:** Help \[0.1\]\
**Created:** [August 25, 2017, 6:46pm UTC](https://discuss.hail.is/t/not-able-to-write-to-vds/269 "2017-08-25T18:46:34Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![tpoterba](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.hail.is/tpoterba/32/61_2.png) [@tpoterba](https://discuss.hail.is/u/tpoterba)\
**Post date:** [August 31, 2017, 4:11pm UTC](https://discuss.hail.is/t/not-able-to-write-to-vds/269/7 "2017-08-31T16:11:16Z")

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Hi Wendy,  
I think you’re spot on about the jar issue. Looks like the exact same one as this post: [ClassNotFoundException: is.hail.asm4s.AsmFunction2](http://discuss.hail.is/t/classnotfoundexception-is-hail-asm4s-asmfunction2/231/6)

It seems as though I was wrong about the jar path configuration for the driver, but right about the configuration for the executor. Try this:

```python
--conf "spark.driver.extraClassPath=build/libs/hail-all-spark.jar"
--conf "spark.executor.extraClassPath=./hail-all-spark.jar"

```

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