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https://issues.apache.org/jira/browse/SOLR-14223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17051522#comment-17051522
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ASF subversion and git services commented on SOLR-14223:
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Commit dd9b9f2f7f26ecaec3e3bc1e8a0ddfc0f3e72aac in lucene-solr's branch
refs/heads/master from Mike Drob
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=dd9b9f2 ]
SOLR-14223 Fix tests for windows
> PublicKeyHandler consumes a lot of entropy during tests
> -------------------------------------------------------
>
> Key: SOLR-14223
> URL: https://issues.apache.org/jira/browse/SOLR-14223
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 7.4, 8.0
> Reporter: Mike Drob
> Assignee: Mike Drob
> Priority: Major
> Fix For: master (9.0)
>
> Time Spent: 2h
> Remaining Estimate: 0h
>
> After the changes in SOLR-12354 to eagerly create a {{PublicKeyHandler}} for
> the CoreContainer, the creation of the underlying {{RSAKeyPair}} uses
> {{SecureRandom}} to generate primes. This eats up a lot of system entropy and
> can slow down tests significantly (I observed it adding 10s to an individual
> test).
> Similar to what we do for SSL config for tests, we can swap in a non blocking
> implementation of SecureRandom for the key pair generation to allow multiple
> tests to run better in parallel. Primality testing with BigInteger is also
> slow, so I'm not sure how much total speedup we can get here, maybe it's
> worth checking if there are faster implementations out there in other
> libraries.
> In production cases, this also blocks creation of all cores. We should only
> create the Handler if necessary, i.e. if the existing authn/z tell us that
> they won't support internode requests.
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