Adrien Grand created LUCENE-5695:
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Summary: 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
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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