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https://issues.apache.org/jira/browse/GEODE-10093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17499694#comment-17499694
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Jacob Barrett commented on GEODE-10093:
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Changes made in GEODE-8217 exposed incorrect handling of {{null}} values in
{{DeltaSession.setAttribute}}.
> DeltaSession getAttribute method logs an NPE and returns unserialized value
> when called on attribute with null value
> --------------------------------------------------------------------------------------------------------------------
>
> Key: GEODE-10093
> URL: https://issues.apache.org/jira/browse/GEODE-10093
> Project: Geode
> Issue Type: Bug
> Components: http session
> Affects Versions: 1.12.2, 1.13.3, 1.14.0, 1.15.0, 1.16.0
> Reporter: Benjamin P Ross
> Assignee: Benjamin P Ross
> Priority: Major
> Labels: needsTriage, pull-request-available
>
> Under certain circumstances, a null value can be set for an attribute which
> then throws an NPE when trying to add it to the local map during a
> getAttribute call on the session. Prior to 1.12.2 we were responding to this
> by removing the entry entirely from the local map which is consistent with
> what the base Session class for Catalina does, but starting with 1.12.2
> onward this results in an error message being displayed and the serialized
> value being returned rather than the unserialized value.
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