add judgement for isPrimary

[MrPresent-Han]

related: #1663

[XuanYang-cn]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MrPresent-Han, XuanYang-cn

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [XuanYang-cn]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[hasansustcse13]

@MrPresent-Han

This issue is still persist as you don't check the key before access in query iterator but checked in search iterator.

QueryIterator:__setup__pk_prop
if field[IS_PRIMARY]:

SearchIterator:__setup__pk_prop
if IS_PRIMARY in field and field[IS_PRIMARY]:

Question: Can anyone tell me self.collection.query(expr=expression, output_fields=output_fields, **kwargs) return all the rows from DB if the collection has so many docs(more than 16384, assume 100000) if don't set any limit.