Question

我正在尝试为一组运行org.gradle.parallel=true的UT用于spring-boot应用程序引入 cassandra-unit 。

运行所有测试并不可靠，但偶尔会有效。

我猜这与描述的问题有关 https://github.com/jsevellec/cassandra-unit/issues/155，即当下一个UT开始时，第一个实例仍然处于闲置状态，并且似乎没有办法强迫它快速进入＆＃39;关闭。

我给出不可靠结果的原始方法是org.gradle.parallel=true，即

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@TestExecutionListeners(
  listeners = CassandraUnitTestExecutionListener.class,
  mergeMode = MERGE_WITH_DEFAULTS
)
@CassandraDataSet
@EmbeddedCassandra
public class MyCassandraUnitTest {

  @Test
  public void xxx_xxx() {
  }

}

如cassandra-unit/wiki和StephanPraetsch github example

所述

作为一种解决方法，我尝试删除注释，而是使用本机API，即尝试保持一个运行以进行所有测试，并使用org.gradle.parallel=false这似乎是可靠的，但会降低整体构建速度。（仍在进行测试以确保其不一致）使用此方法

在单元级之前：

EmbeddedCassandraServerHelper.startEmbeddedCassandra();

和单位班后：

EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();

如描述 - https://github.com/jsevellec/cassandra-unit/wiki/How-to-use-it-in-your-code。

我在第一种方法中遇到的错误是超时，如

00:27:31.826 [Test worker] ERROR org.cassandraunit.utils.EmbeddedCassandraServerHelper - Cassandra daemon did not start after 20000 ms. Consider increasing the timeout

或者像

这样的端口冲突

 2017-02-02 19:44:41.741 ERROR 40053 --- [pool-2-thread-1] o.a.cassandra.service.CassandraDaemon    : Fatal configuration error

    org.apache.cassandra.exceptions.ConfigurationException: /127.0.0.1:7010 is in use by another process.  Change listen_address:storage_port in cassandra.yaml to values that do not conflict with other services
        at org.apache.cassandra.net.MessagingService.getServerSockets(MessagingService.java:557)
        at org.apache.cassandra.net.MessagingService.listen(MessagingService.java:501)
        at org.apache.cassandra.net.MessagingService.listen(MessagingService.java:485)
        at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:745)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:648)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:548)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:385)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:601)
        at org.cassandraunit.utils.EmbeddedCassandraServerHelper$1.run(EmbeddedCassandraServerHelper.java:129)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

    2017-02-02 19:44:41.745  INFO 40053 --- [       Thread-7] o.s.w.c.s.GenericWebApplicationContext   : Closing org.springframework.web.context.support.GenericWebApplicationContext@7ffd8dee: startup date [Thu Feb 02 19:44:17 GMT 2017]; root of context hierarchy
    2017-02-02 19:44:41.972  WARN 40053 --- [iceShutdownHook] org.apache.cassandra.gms.Gossiper        : No local state or state is in silent shutdown, not announcing shutdown
    2017-02-02 19:44:41.972  INFO 40053 --- [iceShutdownHook] o.apache.cassandra.net.MessagingService  : Waiting for messaging service to quiesce
    2017-02-02 19:44:41.982  INFO 40053 --- [iceShutdownHook] org.apache.cassandra.hints.HintsService  : Paused hints dispatch
    2017-02-02 19:44:42.072  INFO 40053 --- [iceShutdownHook] org.apache.cassandra.hints.HintsService  : Paused hints dispatch

Answer 1

回答我自己的问题：我牺牲了gradle中的并行项目构建，即org.gradle.parallel=false

中的gradle.properties

在我的测试中有：

@BeforeClass
public static void before() throws InterruptedException, IOException, TTransportException {
    EmbeddedCassandraServerHelper.startEmbeddedCassandra(20000);
}

@AfterClass
public static void after() throws InterruptedException, IOException, TTransportException {
    EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();
}

cleanEmbeddedCassandra()只是擦除密钥空间但让Cassandra服务器运行。

我希望清理停止EmbeddedCassandraServer，而不是让它继续运行，直到进程退出。

这种方法工作可靠，但不是我想要的，也许有人会发布更好的方法！

Answer 2

你试过这个吗？


EmbeddedCassandraServerHelper.startEmbeddedCassandra(EmbeddedCassandraServerHelper.CASSANDRA_RNDPORT_YML_FILE);

如果org.gradle.parallel = true，则为一组Java UT提供间歇性故障的cassandra-unit

2 个答案: