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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-393) notations for data bag and data map are confusing
Date Tue, 02 Sep 2008 19:31:44 GMT

    [ https://issues.apache.org/jira/browse/PIG-393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12627782#action_12627782
] 

Alan Gates commented on PIG-393:
--------------------------------

I agree that if we were going to start over from scratch it would be better to use {} for
a map and [] for a bag.  But we have users out there using pig as is, and possibly writing
post-pig parsers to deal with data.  So I don't want to change our current output unless we
have to.

> 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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