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https://issues.apache.org/jira/browse/LUCENE-5853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14077489#comment-14077489
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Uwe Schindler commented on LUCENE-5853:
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This is by design. We don't want RAMUsageEstimator to throw any Exceptions. It
should just fall back to default behaviour on *any* error caused by reflection.
> RamUsageEstimator has too general exception handlers
> ----------------------------------------------------
>
> Key: LUCENE-5853
> URL: https://issues.apache.org/jira/browse/LUCENE-5853
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/other
> Reporter: Henrique Carvalho Silva
> Priority: Minor
> Attachments: LUCENE-5853.patch
>
>
> core util RamUsageEstimator has several handlers in which "Exception" was
> caught and ignored. Such a general handler not only includes
> reflection-related exceptions such as ClassNotFoundException,
> NoSuchFieldException and NoSuchMethodException (which are OK to be ignored)
> but also harmful exceptions (that should at least be logged), such as
> NullPointerException, UnsupportedOperationException, SecurityException, etc.
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