OData v4 - definition of OData-Isolation header is either being ignored or is not implemented correctly

Teiid does not process header OData-Isolation: snapshot defined in request correctly.

• if service (Teiid) does not support this option it must return error 412
• if Teiid does supports this option then it is not processed correctly, because modifications made during request are visbile

See http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-errata02-os-part1-protocol-complete.html#_Toc406398231