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The following page has been changed by SanthoshSrinivasan:
http://wiki.apache.org/pig/PigErrorHandlingFunctionalSpecification

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  === Frontend errors ===
        The front-end consists of multiple components - parser, type checker, 
optimizer, translators, etc. These errors usually occur at the client side 
before the execution begins in Hadoop. All the errors from these components can 
be categorized as front-end errors. Components that are part of the front end 
will throw specific exceptions that capture the context. For example, the 
parser throws a `ParseException`, the type checker will throw a 
`TypeCheckerException`, the optimizer will throw a `LogicalOptimizerException`, 
etc. A list of the exceptions thrown in the front-end are as follows.
  
-    1. `ParseException` Used for indicating errors due to parsing
+    1. `PigParseException` Used for indicating errors due to parsing
     2. `TypeCheckerException` Used for indicating errors due to type checking
     3. `LogicalOptimizerException` Used for indicating errors during logical 
plan optimization
     4. `LogicalToPhysicalTranslatorException` Used for indicating errors 
during logical plan to physical plan translation

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