java.lang.AssertionError：Cassandra守护程序未在超时内启动

Posted 2021-05-04

我的测试班：

public class NetworkSettingsDaoTest {

@Rule
public CassandraCQLUnit cassandraCQLUnit = new CassandraCQLUnit(new ClassPathCQLDataSet("simpleWithCreateKeyspace.cql"));
public static Session session;
public static NetworkSettingsDao networkSettingsDao;
@Before
public void init() throws ConfigurationException, TTransportException, IOException, InterruptedException{
    EmbeddedCassandraServerHelper.startEmbeddedCassandra(5600000L);
    //Thread.sleep(4*1000); //workaround for weak machine
    session = cassandraCQLUnit.getSession();
    networkSettingsDao = new NetworkSettingsDao();
}

@Test
public void should_have_started_and_execute_cql_script() throws Exception {
    ResultSet result = session.execute("select * from mytable WHERE id='myKey01'");
    assertThat(result.iterator().next().getString("value"), is("myValue01"));
}   
}

我的simpleWithCreateKeyspace.cql文件：

CREATE KEYSPACE NETWORKSETTINGS WITH replication={'class' : 'SimpleStrategy', 'replication_factor':1};
USE NETWORKSETTINGS;

CREATE TABLE STBDevice(
    KEY varchar,
    SETTINGS_COLUMN varchar,
    AMSIP varchar,
    PRIMARY KEY(KEY));

INSERT INTO STBDevice(KEY, SETTINGS_COLUMN,AMSIP) values('myKey01','myColumn1','myAMSIP1');

例外：

java.lang.AssertionError：Cassandra守护程序未在org中的org.cassandraunit.utils.EmbeddedCassandraServerHelper.startEmbeddedCassandra（EmbeddedCassandraServerHelper.java:130）的org.cassandraunit.utils.EmbeddedCassandraServerHelper.startEmbeddedCassandra（EmbeddedCassandraServerHelper.java:85）的超时内启动。 cassandraunit.utils.EmbeddedCassandraServerHelper.startEmbeddedCassandra（EmbeddedCassandraServerHelper.java:64）在org.cassandraunit.utils.EmbeddedCassandraServerHelper.startEmbeddedCassandra（EmbeddedCassandraServerHelper.java:56）在org.cassandraunit.BaseCassandraUnit.before（BaseCassandraUnit.java:28）在org.junit .rules.ExternalResource $ 1.evaluate（ExternalResource.java:46）org.junit.rules.RunRules.evaluate（RunRules.java:20）atg.junit.runners.ParentRunner.runLeaf（ParentRunner.java:271）at org org.junit.ru上的org.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:50）中的.junit.runners.BlockJUnit4ClassRunner.runChild（BlockJUnit4ClassRunner.java:70） nners.ParentRunner $ 3.run（ParentRunner.java:238）org.junit.runners.ParentRunner $ 1.schedule（ParentRunner.java:63）org.junit.runners.ParentRunner.runChildren（ParentRunner.java:236）at org .junit.runners.ParentRunner.access $ 000（ParentRunner.java:53）org.junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:229）org.junit.runners.ParentRunner.run（ParentRunner.java:309） ）org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）at org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）at org。 eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:459）位于org.eclipse.jdt的org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:675）。 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:192）中的internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:382）

答案

就我而言，服务器始终在默认的10秒窗口内启动，直到昨天。今天需要50至70秒。没有有效的解释。因此，看起来唯一的选择是增加超时。

另一答案

看起来，这取决于你在Cassandra上发出的查询数量。如果你有太多的查询要运行，那么你需要增加EmbeddedCassandra注释的超时。 @EmbeddedCassandra(timeout = 100000L)

另一答案

这堂课帮助解决了问题

package org.cassandraunit.test.spring.cql;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Session;
import org.cassandraunit.spring.CassandraDataSet;
import org.cassandraunit.spring.CassandraUnitTestExecutionListener;
import org.cassandraunit.spring.EmbeddedCassandra;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;


@RunWith(SpringJUnit4ClassRunner.class)
@TestExecutionListeners({ CassandraUnitTestExecutionListener.class })
@CassandraDataSet(value = { "simple.cql" })
@EmbeddedCassandra
public class SpringCQLScriptLoadTest {

@Test
public void should_have_started_and_execute_cql_script() throws Exception {
    Cluster cluster = Cluster.builder()
            .addContactPoints("127.0.0.1")
            .withPort(9142)
            .build();
    Session session = cluster.connect("cassandra_unit_keyspace");

    ResultSet result = session.execute("select * from mytable WHERE id='myKey01'");
    assertThat(result.iterator().next().getString("value"), is("myValue01"));
}
  }