[Basic Question] the measurement deletion still keep the old field name

influxdb
#1

Hi, Experts

as for the deletion of influxdb measurements, if i want to remove some fields from existing measurement in order to make the measurement looks simple and clean. but it seems not possible

> insert test,type="b" val=2 1504225728000123456
> select * from test
name: test
time                           caseAuthor caseName caseResult type val value
----                           ---------- -------- ---------- ---- --- -----
2017-09-01T00:28:48.000123456Z                                "b"  2   
> 

the old field name caseName and caseAuthor still there, I guess maybe i did not delete correctly by
Drop series from test

anyone could explain that to me

thanks
/Yijun

#2

I think you might need to drop a shard. Others could confirm.

#3

thanks for your help, Yes, probably del Shard could help to remove all the information,
but not sure whether there is other way to cleanuo without Shard operation