Michael Gibney created SOLR-16966:
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Summary: Add a first-class cache for OrdinalMaps
Key: SOLR-16966
URL: https://issues.apache.org/jira/browse/SOLR-16966
Project: Solr
Issue Type: Improvement
Affects Versions: main (10.0)
Reporter: Michael Gibney
SOLR-16515 updated SlowCompositeReaderWrapper to cache OrdinalMaps in a
ConcurrentHashMap.
This issue proposes to replace the ConcurrentHashMap with a configurable
first-class SolrCache.
There are a number of benefits to this approach:
# currently ordmaps are cached in an unbounded map; this change would support
configurable constraints on resource consumption (number of entries, bytes,
etc.)
# support directly autowarming the ordMapCache (which is often an indirect
target of filterCache auto-warming or static warming queries)
# all the benefits of Caffeine cache (e.g. async operation, preventing
double-computation)
Direct autowarming of ordMapCache is particularly desirable in contexts where
static warming and autowarming are not practical, such as high-core-count and
large numbers of unused cores at any given time.
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