Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/1394#discussion_r45733147
--- Diff: flink-core/src/test/java/org/apache/flink/util/NetUtilsTest.java
---
@@ -94,4 +99,53 @@ public void testIPv6URLEncoding() {
fail(e.getMessage());
}
}
+
+ @Test
+ public void testFreePortRangeUtility() {
+ // inspired by Hadoop's example for
"yarn.app.mapreduce.am.job.client.port-range"
+ String rangeDefinition = "50000-50050, 50100-50200,51234 "; //
this also contains some whitespaces
+ Set<Integer> ports =
NetUtils.getPortRangeFromString(rangeDefinition);
+ Assert.assertEquals(51+101+1, ports.size());
+ // check first range
+ Assert.assertThat(ports, hasItems(50000, 50001, 50002, 50050));
--- End diff --
What if `ports` does not contain `50003`?
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