Unit testing 如何在Elasticsearch单元测试中重新创建封闭客户端？

我一直在使用org.elasticsearch.test.elasticsearch集成测试类来测试elasticsearch功能

我使用以下代码将数据导入Elasticsearch并搜索该数据：**

  @Test
public void searchData() throws Exception{
   logger.info("searchData : searching data from Elasticsearch");
   try {
       csvImporter.client =  client();
       csvImporter.importData();   // In the importData method after data is imported we close the client

       //In the below line getting Exception and it is inconsistent. Some times works fine

       SearchResponse searchResponse = csvImporter.client.prepareSearch().setQuery(matchAllQuery()).execute().actionGet();
       for (SearchHit searchHit : searchResponse.getHits()){
          logger.info("Source Data >>>>>>>>>>>>>>>>>>>>> " + searchHit.sourceAsString());
       }
   } finally {
       csvImporter.client.close();
   }
}

例外情况：

    org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: []
at __randomizedtesting.SeedInfo.seed([86EB1B4AAE1739A5:99315B8D3D924DA1]:0)
at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:305)
at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:200)
at org.elasticsearch.client.transport.support.InternalTransportIndicesAdminClient.execute(InternalTransportIndicesAdminClient.java:86)
at org.elasticsearch.client.support.AbstractIndicesAdminClient.deleteTemplate(AbstractIndicesAdminClient.java:687)
at org.elasticsearch.action.admin.indices.template.delete.DeleteIndexTemplateRequestBuilder.doExecute(DeleteIndexTemplateRequestBuilder.java:40)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:91)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:65)
at org.elasticsearch.test.TestCluster.wipeTemplates(TestCluster.java:177)
at org.elasticsearch.test.TestCluster.wipe(TestCluster.java:76)
at org.elasticsearch.test.ElasticsearchIntegrationTest.beforeInternal(ElasticsearchIntegrationTest.java:292)
at org.elasticsearch.test.ElasticsearchIntegrationTest.before(ElasticsearchIntegrationTest.java:1946)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1665)
at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:898)
at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:914)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
at org.apache.lucene.util.TestRuleFieldCacheSanity$1.evaluate(TestRuleFieldCacheSanity.java:51)
at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:59)
at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:809)
at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:460)
at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:873)
at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:775)
at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:809)
at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:820)
at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
at com.carrotsearch.randomizedtesting.rules.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:59)
at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:43)
at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:367)
at java.lang.Thread.run(Thread.java:745)

因为这是一个单元测试，所以我没有使用配置设置来创建客户端

---

有没有办法用相同的配置设置重新创建客户端对象？？？

不只是调用

client（）

并将其分配给

csvImporter.client

工作？框架应该为相同的

集群创建一个客户端。现在的问题是您只有一个要关闭的节点，因此错误消息中使用了
[]
。仅在中使用了client（）。有时它毫无例外地工作良好。对于单元测试，是否可以使用设置对象创建客户端？？。因此，我可以使用相同的设置重新创建对象。您可以在测试代码和节点关闭之间设置竞争条件。您可以尝试添加
csvImporter.client=client（）在
csvImporter.importData（）之后？是。。补充说。。我已经运行了4个测试用例。如果我单独运行每个测试用例，那么一切都正常。但是，如果我运行所有4个测试用例，就会得到不一致的结果。有时所有的4个测试用例都通过了，有时这4个测试用例中的任何一个都失败了。它们是否仍然失败，出现上述异常（没有节点）还是新的异常？