zentol commented on a change in pull request #6782: [FLINK-9083][Cassandra
Connector] Add async backpressure support to Cassandra Connector
URL: https://github.com/apache/flink/pull/6782#discussion_r235147078
##########
File path:
flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBaseTest.java
##########
@@ -218,23 +221,127 @@ public void go() throws Exception {
Thread.sleep(5);
}
- Assert.assertEquals(1, casSinkFunc.getNumOfPendingRecords());
+ Assert.assertEquals(1, casSinkFunc.getAcquiredPermits());
completableFuture.complete(null);
- Assert.assertEquals(0, casSinkFunc.getNumOfPendingRecords());
+ Assert.assertEquals(0, casSinkFunc.getAcquiredPermits());
+ }
+
+ @Test(timeout = 5000)
+ public void testAcquireOnInvoke() throws Exception {
+ final CassandraSinkBaseConfig config =
CassandraSinkBaseConfig.newBuilder()
+ .setMaxConcurrentRequests(1)
+ .setMaxConcurrentRequestsTimeout(5,
TimeUnit.MILLISECONDS)
+ .build();
+ try (TestCassandraSink casSinkFunc = new
TestCassandraSink(config)) {
+ casSinkFunc.open(new Configuration());
+
+ CompletableFuture<ResultSet> completableFuture = new
CompletableFuture<>();
+
+
casSinkFunc.enqueueResultSetFuture(ResultSetFutures.fromCompletableFuture(completableFuture));
+
+ Assert.assertEquals(1,
casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(0,
casSinkFunc.getAcquiredPermits());
+
+ casSinkFunc.invoke("hello");
+
+ Assert.assertEquals(0,
casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(1,
casSinkFunc.getAcquiredPermits());
+
+ completableFuture.complete(null);
+ }
+ }
+
+ @Test(timeout = 5000)
+ public void testReleaseOnSuccess() throws Exception {
+ final CassandraSinkBaseConfig config =
CassandraSinkBaseConfig.newBuilder()
+ .setMaxConcurrentRequests(1)
+ .setMaxConcurrentRequestsTimeout(5,
TimeUnit.MILLISECONDS)
+ .build();
+ try (TestCassandraSink casSinkFunc = new
TestCassandraSink(config)) {
+ casSinkFunc.open(new Configuration());
+
+ CompletableFuture<ResultSet> completableFuture = new
CompletableFuture<>();
+
+
casSinkFunc.enqueueResultSetFuture(ResultSetFutures.fromCompletableFuture(completableFuture));
+
+ Assert.assertEquals(1,
casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(0,
casSinkFunc.getAcquiredPermits());
+
+ casSinkFunc.invoke("hello");
+
+ Assert.assertEquals(0,
casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(1,
casSinkFunc.getAcquiredPermits());
+
+ completableFuture.complete(null);
+
+ Assert.assertEquals(1,
casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(0,
casSinkFunc.getAcquiredPermits());
+ }
+ }
+
+ @Test(timeout = 5000)
+ public void testReleaseOnFailure() throws Exception {
+ final CassandraSinkBaseConfig config =
CassandraSinkBaseConfig.newBuilder()
+ .setMaxConcurrentRequests(1)
+ .setMaxConcurrentRequestsTimeout(5,
TimeUnit.MILLISECONDS)
+ .build();
+ TestCassandraSink casSinkFunc = new TestCassandraSink(config);
+
+ casSinkFunc.open(new Configuration());
+
+ CompletableFuture<ResultSet> completableFuture = new
CompletableFuture<>();
+
+
casSinkFunc.enqueueResultSetFuture(ResultSetFutures.fromCompletableFuture(completableFuture));
+
+ Assert.assertEquals(1, casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(0, casSinkFunc.getAcquiredPermits());
+
+ casSinkFunc.invoke("hello");
+
+ Assert.assertEquals(0, casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(1, casSinkFunc.getAcquiredPermits());
+
+ completableFuture.completeExceptionally(new RuntimeException());
+
+ Assert.assertEquals(1, casSinkFunc.getAvailablePermits());
+ Assert.assertEquals(0, casSinkFunc.getAcquiredPermits());
+
+ try {
+ casSinkFunc.close();
+ } catch (Exception e) {
+ Assert.assertTrue(e.getMessage().contains("Error while
sending value"));
+ }
}
- private static class TestCassandraSink extends
CassandraSinkBase<String, ResultSet> {
+ @Test(timeout = 5000)
+ public void testTimeoutExceptionOnInvoke() throws Exception {
+ final CassandraSinkBaseConfig config =
CassandraSinkBaseConfig.newBuilder()
+ .setMaxConcurrentRequests(0)
Review comment:
what are the semantics for 0 maxConcurrentRequests?
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