JDBC和Hive查詢錯誤10或9

Question

在我可能已經創建了一個Java servlet，它允許我在Cosmos上查詢我的hive表。

在遷移到cygnus 0.8.2之前，我的數據被推送到名為“hostabee”的表中，我仍然可以從我的Java應用程序中查詢。 但是現在為每個推送到宇宙的實體自動創建一個表。 起初，我沒有看到任何問題，這甚至使我的項目更簡單。 但是我無法從我的應用程序中查詢新表。 相反，我得到這個錯誤

java.sql.SQLException: Query returned non-zero code: 10, cause: FAILED: Error in semantic analysis: Line 1:15 Table not found 'guillaume_jourdain_hostabee_hives_a_hive_column'
        at org.apache.hadoop.hive.jdbc.HiveStatement.executeQuery(HiveStatement.java:194)
        at HiveBasicClientServlet.doQuery(HiveBasicClientServlet.java:100)
        at HiveBasicClientServlet.demo(HiveBasicClientServlet.java:189)
        at HiveBasicClientServlet.doGet(HiveBasicClientServlet.java:44)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:701)

或者這個

java.sql.SQLException: Query returned non-zero code: 9, cause: FAILED: Execution Error, return code -101 from shark.execution.SparkTask
        at org.apache.hadoop.hive.jdbc.HiveStatement.executeQuery(HiveStatement.java:194)
        at HiveBasicClientServlet.doQuery(HiveBasicClientServlet.java:100)
        at HiveBasicClientServlet.demo(HiveBasicClientServlet.java:189)
        at HiveBasicClientServlet.doGet(HiveBasicClientServlet.java:44)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:701)

表“guillaume_jourdain_hostabee_hives_a_hive_column”存在，我可以使用ssh連接從hive查詢它。 你知道我的問題來自哪里嗎？ 如有必要，我可以向您展示我的部分代碼。

Answer 1

以下錯誤：

Error in semantic analysis: Line 1:15 Table not found 'guillaume_jourdain_hostabee_hives_a_hive_column'

不是由於Cygnus 0.8.2，而是我們在FIWARE實驗室的全球宇宙實例中遇到的罕見行為。 幸運的是，可以通過在表名前添加默認數據庫名稱（ default :)來輕松修復它。 即如果你有一些喜歡的東西：

select * from mytable;

現在你必須寫：

select * from default.mytable;