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From "Chao Wang (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1351) [Zebra] No type check when we write to the basic table
Date Fri, 02 Apr 2010 17:30:27 GMT
[Zebra] No type check when we write to the basic table
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                 Key: PIG-1351
                 URL: https://issues.apache.org/jira/browse/PIG-1351
             Project: Pig
          Issue Type: Improvement
    Affects Versions: 0.6.0, 0.7.0, 0.8.0
            Reporter: Chao Wang
            Assignee: Chao Wang
             Fix For: 0.8.0


In Zebra, we do not have any type check when writing to a basic table. 

Say, we have a schema: "f1:int, f2:string",
however we can write a tuple ("abc", 123) without any problem, which is definitely not desirable.

To overcome this problem, we decide to perform certain amount of type checking in Zebra -
We check the first row only for each writer.
This only serves as a sanity check purpose in cases where users screw up specifying the output
schema. We do NOT perform a rigorous type checking for all rows for apparently performance
concerns.







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