TableScanDesc.isAcidTable is restricted to FullAcid tables

isAcidTable = AcidUtils.isAcidTable(this.tableMetadata);
is changed to
isAcidTable = AcidUtils.isFullAcidTable(this.tableMetadata);

This property is then checked all over the place - why?
This then affects TableScanDesc.isAcidTable() so FetchTask, HiveInputFormat etc assume that they are handling Acid read only if it's full acid... this doesn't look right