Jeff Miller created SOLR-11898:
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Summary: ConcurrentModificationException when calling
org.apache.solr.core.SolrInfoBean.getMetricsSnapshot(SolrInfoBean.java:62)
Key: SOLR-11898
URL: https://issues.apache.org/jira/browse/SOLR-11898
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: metrics
Affects Versions: 7.1
Reporter: Jeff Miller
SOLR-11255 Updated to use ConcurrentHashMap.newKeySet(); for all metricNames
implementation but missed a few classes.
I see this exception happening once in a while:
Cause0: java.util.ConcurrentModificationException Cause0-StackTrace: at
java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1558) at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) at
org.apache.solr.util.stats.MetricUtils.convertMetrics(MetricUtils.java:248) at
org.apache.solr.util.stats.MetricUtils.convertMetrics(MetricUtils.java:226) at
org.apache.solr.core.SolrInfoBean.getMetricsSnapshot(SolrInfoBean.java:62)
Three classes weren't updated from using a HashSet for metricNames:
FastLRUCache, LFUCache and LRUCache
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