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https://issues.apache.org/jira/browse/SYSTEMML-1562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deron Eriksson closed SYSTEMML-1562.
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> Remove history from MLContext
> -----------------------------
>
> Key: SYSTEMML-1562
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1562
> Project: SystemML
> Issue Type: Task
> Components: APIs
> Reporter: Deron Eriksson
> Assignee: Deron Eriksson
> Priority: Minor
> Fix For: SystemML 1.0
>
>
> When working in an environment such as spark-shell with MLContext, typically
> a user has references to any needed Script objects. Thus, the MLContext
> script history feature is not really necessary. In addition, the particular
> implementation can be confusing since the Script objects in the LinkedHashMap
> values can point to the same Script object, which can change over time,
> leading to unexpected behavior. This mutability makes the history not
> necessarily accurate. Therefore, remove the script history feature.
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