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https://issues.apache.org/jira/browse/SLING-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carsten Ziegeler resolved SLING-1545.
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Resolution: Fixed
I changed the lists to sets and refactored the code. The old script manager is
now marked invalid on changes and recreated on next access. This avoids
blocking the bind/unbind method for a longer time.
Changed in revision 1024145
> ScripteEngineManagerFactory is not thread safe
> ----------------------------------------------
>
> Key: SLING-1545
> URL: https://issues.apache.org/jira/browse/SLING-1545
> Project: Sling
> Issue Type: Improvement
> Components: Scripting
> Affects Versions: Scripting Core 2.0.12
> Reporter: Felix Meschberger
> Assignee: Carsten Ziegeler
> Fix For: Scripting Core 2.0.12
>
>
> The ScriptEngineManagerFactory class is not thread-safe:
> * Access to the engineSpiBundles, engineSpiServices fields (lists) are not
> guarded
> * Calls to refreshScriptEngineManager are not guarded
> This may cause improper states under certain circumstances.
> Accesses to these internal fields and methods should properly be guarded.
> In addition, replacement of the List as collection of the SPI bundles and
> service by Set should be considered.
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