[jira] [Created] (LUCENE-10129) Add RamUsageEstimator shallowSizeOf(long[]) overload that just calls sizeOf(long[])?

["Robert Muir (Jira)" <ji...@apache.org>]

Robert Muir created LUCENE-10129:
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             Summary: Add RamUsageEstimator shallowSizeOf(long[]) overload that just calls sizeOf(long[])?
                 Key: LUCENE-10129
                 URL: https://issues.apache.org/jira/browse/LUCENE-10129
             Project: Lucene - Core
          Issue Type: Task
            Reporter: Robert Muir


See LUCENE-10128 for an example. The problem is there is only a {{sizeOf(long[])}}, so if the programmer uses {{shallowSizeOf}} instead of {{sizeOf}} then it falls back to {{shallowSizeOf(Object)}} which does a bunch of reflection.

This is pretty crazy because it can create performance traps. Should we just add a {{shallowSizeOf(long[])}} that calls {{sizeOf(long[])}}, so that things are fast? (same for other primitive arrays). It would solve the problem easily I think.



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