# Dremio 4.0 compileError at execution

**URL:** <https://community.dremio.com/t/dremio-4-0-compileerror-at-execution/4120>\
**Category:** Uncategorized\
**Created:** [September 19, 2019, 1:36pm UTC](https://community.dremio.com/t/dremio-4-0-compileerror-at-execution/4120 "2019-09-19T13:36:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dfleckinger](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/dfleckinger/32/370_2.png) [@dfleckinger](https://community.dremio.com/u/dfleckinger)\
**Post date:** [September 19, 2019, 1:36pm UTC](https://community.dremio.com/t/dremio-4-0-compileerror-at-execution/4120/1 "2019-09-19T13:36:11Z")

</div>

I’ve got the following error  
during query execution:  
CompileException: Line 90, Column 11: “isSet” is neither a method, a field, nor a member class of “org.apache.arrow.vector.complex.reader.FieldReader”  
after migration to Dremio 4.0 release

here is the profile error.  
[profile\_error\_156effc0-bf0f-4436-9cd6-9486c01af74c.zip](https://community.dremio.com/uploads/short-url/tIYiTVMeF7a9WFdcwA9iwkKglrE.zip) (89.7 KB)

Same query was working before migration to 4.0.

I suspect the issue to be due to coalesce function.  
I replaced coalesce(dateField, otherDate) \<= otherDate  
by (dateField is null or dateField \<= otherDate)  
in the query and it passed.