Hoss Man created SOLR-13653:
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Summary: java (10 & 11) HashMap bug can trigger AssertionError
when using SolrCaches
Key: SOLR-13653
URL: https://issues.apache.org/jira/browse/SOLR-13653
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Hoss Man
we've seen some java11 jenkins builds that have failed due to an AssertionError
being thrown by HashMap.put as used in LRUCache -- in at least one case these
failures are semi-reproducible. (the occasional "success" is likely due to some
unpredictibility in thread contention)
Some cursory investigation suggests that JDK-8205399, first identified in
java10, and fixed in java12-b26...
https://bugs.openjdk.java.net/browse/JDK-8205399
There does not appear to be anything we can do to mitigate this problem in
Solr.
It's also not clear to me based on th comments in JDK-8205399 if the underlying
problem can cause problems for end users running w/assertions disabled, or if
it just results in sub-optimal performance
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