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https://issues.apache.org/jira/browse/LANG-494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Yandell closed LANG-494.
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Resolution: Fixed
svn ci -m "Synchronizing the COMMON Map so that getInstance doesn't miss a put
from a subclass in another thread. LANG-494"
Sending src/main/java/org/apache/commons/lang3/CharSet.java
Transmitting file data .
Committed revision 897408.
> CharSet sub-classes cannot be made thread-safe
> ----------------------------------------------
>
> Key: LANG-494
> URL: https://issues.apache.org/jira/browse/LANG-494
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.*
> Reporter: Sebb
> Fix For: 3.0
>
>
> AFAICT, CharSet sub-classes cannot be made thread-safe.
> This is because the HashMap and HashSet collections are not thread-safe.
> If a sub-class updates COMMON, there is no guarantee that getInstance() will
> see the update.
> In the case of the instance variable "set", the sub-class could override all
> the read/write methods to provide thread-safety.
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