tillrohrmann commented on a change in pull request #16274:
URL: https://github.com/apache/flink/pull/16274#discussion_r670603303
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/minicluster/MiniClusterITCase.java
##########
@@ -686,6 +690,38 @@ public void initializeOnMaster(ClassLoader loader) {
}
}
+ @Test
+ public void testDefaultSizeOfIOPool() throws Exception {
+
+ final int numOfTMs = 3;
+ final int slotsPerTM = 7;
+
+ final MiniClusterConfiguration cfg =
+ new MiniClusterConfiguration.Builder()
+ .setNumTaskManagers(numOfTMs)
+ .setNumSlotsPerTaskManager(slotsPerTM)
+ .setConfiguration(getDefaultConfiguration())
+ .build();
+
+ try (final MiniCluster miniCluster = new MiniCluster(cfg)) {
+ miniCluster.start();
+ miniCluster.getDispatcherGatewayFuture().get();
+
+ // check io pool size.
+ List<TaskExecutor> taskManagers = miniCluster.getTaskManagers();
+ for (TaskExecutor taskExecutor : taskManagers) {
+ ThreadPoolExecutor ioExecutor = (ThreadPoolExecutor)
taskExecutor.getIOExecutor();
+ assertThat(
+ ioExecutor.getCorePoolSize(),
+ is(MiniClusterConfiguration.DEFAULT_IO_POOL_SIZE));
+ }
+
+ assertThat(
+ ((ThreadPoolExecutor)
miniCluster.getIOExecutor()).getCorePoolSize(),
+ is(MiniClusterConfiguration.DEFAULT_IO_POOL_SIZE));
+ }
+ }
Review comment:
I think this test leaks a bit of implementation details (e.g.
`ioExecutor` being a `ThreadPoolExecutor`). Hence, I would argue that it is ok
to remove this test.
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