Github user TomaszGaweda commented on a diff in the pull request: https://github.com/apache/spark/pull/22399#discussion_r216824283 --- Diff: common/kvstore/src/test/java/org/apache/spark/util/kvstore/DBIteratorSuite.java --- @@ -383,7 +383,7 @@ public void testRefWithIntNaturalKey() throws Exception { LevelDBSuite.IntKeyType i = new LevelDBSuite.IntKeyType(); i.key = 1; i.id = "1"; - i.values = Arrays.asList("1"); + i.values = Collections.singletonList("1"); --- End diff -- If you are already changing this, I would also suggest to add static imports to shorten the code
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