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https://issues.apache.org/jira/browse/LUCENE-8434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16560395#comment-16560395
]
Hoss Man commented on LUCENE-8434:
----------------------------------
would it make sense to support setting a sentinel exception as an expert level
option on Collectors that currently {{throw new CollectionTerminatedException}}
?
(for users who generally want {{-XX:-OmitStackTraceInFastThrow}} but in this
specific case don't care)
ie...
{code:java}
private CollectionTerminatedException reusableCollectionTerminatedException =
null;
public void
setReusableCollectionTerminatedException(CollectionTerminatedException e) {
this.reusableCollectionTerminatedException = e;
}
...
if (someConditionThatAllowsEarlyTermination) {
throw (null != reusableCollectionTerminatedException) ?
reusableCollectionTerminatedException : new
CollectionTerminatedException();
}
}
{code}
?
> Use shared instance of CollectionTerminatedException
> ----------------------------------------------------
>
> Key: LUCENE-8434
> URL: https://issues.apache.org/jira/browse/LUCENE-8434
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael Braun
> Priority: Minor
>
> Creating exceptions and filling in the stack is expensive (see SOLR-11242 and
> SOLR-11314 for two such examples). CollectionTerminatedException is used as a
> signaling mechanism - there are zero instances in code that actually log that
> it occurred or make use of anything other than the fact that it occurred
> (unlike Solr's EarlyTerminatingCollectorException, for instance). Exceptions
> really should be for something exceptional - the use of
> CollectionTerminatedException is in place of polluting return values with
> this condition and is just used as a signal to callers.
> Because CollectionTerminatedException is never inspected directly and is
> effectively a different return condition, it doesn't make as much sense to
> generate new Exceptions with fresh stack traces every time - either change
> the signatures or share the object.
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