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https://issues.apache.org/jira/browse/PIG-393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich resolved PIG-393.
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    Resolution: Won't Fix

for backward compatibility

> notations for data bag and data map are confusing
> -------------------------------------------------
>
>                 Key: PIG-393
>                 URL: https://issues.apache.org/jira/browse/PIG-393
>             Project: Pig
>          Issue Type: Wish
>            Reporter: Rong-En Fan
>            Priority: Minor
>
> In Pig document, we use {} for data bag and [] for data map. While data bag 
> is more like a collection (a list of other data) and data map is like a hash, 
> their corresponding notation in other language like python (and hash in 
> perl), is actually the other way around. In Python, they use [] for list and 
> {} for map (dictionary). In perl, they use {} for hash, too. The notations in 
> Pig is very confusing for developers who are familiar with Python/perl.

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