dweiss commented on a change in pull request #128:
URL: https://github.com/apache/lucene/pull/128#discussion_r638657529
##########
File path: lucene/test-framework/src/java/org/apache/lucene/util/TestUtil.java
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@@ -321,6 +321,7 @@ public static void syncConcurrentMerges(MergeScheduler ms) {
checker.setDoSlowChecks(doSlowChecks);
checker.setFailFast(failFast);
checker.setInfoStream(new PrintStream(output, false, IOUtils.UTF_8),
false);
+ checker.setThreadCount(RandomNumbers.randomIntBetween(new Random(), 1,
5));
Review comment:
You should use randomized testing's context random, otherwise tests are
not reproducible. Use this static method from RandomizedTest:
https://github.com/randomizedtesting/randomizedtesting/blob/master/randomized-runner/src/main/java/com/carrotsearch/randomizedtesting/RandomizedTest.java#L161.
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