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https://issues.apache.org/jira/browse/LUCENE-5695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-5695:
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Attachment: LUCENE-5695.patch
Here is a patch.
> Add DocIdSet.ramBytesUsed
> -------------------------
>
> Key: LUCENE-5695
> URL: https://issues.apache.org/jira/browse/LUCENE-5695
> Project: Lucene - Core
> Issue Type: New Feature
> Affects Versions: 4.9, 5.0
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-5695.patch
>
>
> LUCENE-5463 tried to remove calls to {{RamUsageEstimator.sizeOf(Object)}} yet
> it was not always possible to remove the call when there was no other API to
> compute the memory usage of a particular class. In particular, this is the
> case for {{CachingWrapperFilter.sizeInBytes()}} that needs to be able to get
> the memory usage of any cacheable {{DocIdSet}} instance.
> We could add {{DocIdSet.ramBytesUsed}} in order to remove the need for
> {{RamUsageEstimator}}. This will also help have bounded filter caches and
> take the size of the cached doc id sets into account when doing evictions.
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