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https://issues.apache.org/jira/browse/LUCENE-8855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866445#comment-16866445
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Adrien Grand commented on LUCENE-8855:
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Would it be an option to use a visitor that assumes some constant memory usage
for the majority of queries (say 1kb to be conservative) and uses
Accountable#rambytesUsed for queries that implement Accountable? I agree it is
going to produce an estimation that will be less good, but maybe good enough in
order to not run out-of-memory because of queries as cache keys?
> Add Accountable to Query implementations
> ----------------------------------------
>
> Key: LUCENE-8855
> URL: https://issues.apache.org/jira/browse/LUCENE-8855
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Major
> Attachments: LUCENE-8855.patch, LUCENE-8855.patch
>
>
> Query implementations should also support {{Accountable}} API in order to
> monitor the memory consumption e.g. in caches where either keys or values are
> {{Query}} instances.
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