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From "Chen Luo (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ASTERIXDB-2119) Project Rule has non-deterministic ordering of variables
Date Wed, 04 Oct 2017 00:05:00 GMT

     [ https://issues.apache.org/jira/browse/ASTERIXDB-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chen Luo resolved ASTERIXDB-2119.
---------------------------------
    Resolution: Fixed

> Project Rule has non-deterministic ordering of variables
> --------------------------------------------------------
>
>                 Key: ASTERIXDB-2119
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2119
>             Project: Apache AsterixDB
>          Issue Type: Improvement
>          Components: COMP - Compiler
>            Reporter: Chen Luo
>            Assignee: Chen Luo
>
> IntroduceProjectsRule introduces projections whenever needed to eliminate unnecessary
variables. However, the current implementation depends on HashSet, which makes the ordering
of output variables indeterministic. This is undesirable for tests, and some operators which
may depend on the ordering of variables.



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