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Bug 151185

Summary:	User should be warned when upstream schema change might affect downstream operators
Product:	soa	Reporter:	jlautz <jlautz>
Component:	IEP editor	Assignee:	Ritesh Adval <radval>
Status:	NEW ---
Severity:	blocker
Priority:	P3
Version:	6.x
Hardware:	All
OS:	All
Issue Type:	ENHANCEMENT	Exception Reporter:

Description jlautz 2008-10-23 17:31:48 UTC

Seen with Java CAPS 6 with NB 6.1 Patch 4 applied, and IEP *.jar and *.nbm artifacts installed from soarelease
builds 20081022_1.

See scenario described in issue 147112, which is verified fixed per the description.

However, the user should receive some design time feedback that a schema or naming change in an upstream operator
(StreamInput, etc) will affect SQL queries in downstream operators (ex. RelationMap, StreamProjectionAndFilter, etc.). 

Examples of changes to a schema or operator that can cause unexpected behavior or make the SQL query invalid (which
won't be detected until runtime): deleting attributes, renaming attributes, changing attribute data types, changing
operator names.