hadoop - Oozie + yarn : getting connection failure exception

Question

在我们的应用程序中，我们希望一次只能运行一个 oozie 工作流。我们面临与第一个工作流中断的连接问题，并且由于第二个工作流开始。在 YARN 上，第一个工作流程仍在运行。

我们收到以下错误消息:

E0603 : E0603: SQL error in operation, The last packet successfully received from the server was 94,669,212 milliseconds ago.  The last packet sent successfully to the server was 94,669,212 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
        at org.apache.oozie.client.OozieClient.handleError(OozieClient.java:628)
        at org.apache.oozie.client.OozieClient$JobInfo.call(OozieClient.java:980)
        at org.apache.oozie.client.OozieClient$JobInfo.call(OozieClient.java:964)
        at org.apache.oozie.client.OozieClient$ClientCallable.call(OozieClient.java:576)
        at org.apache.oozie.client.OozieClient.getJobInfo(OozieClient.java:1055)
        at org.apache.oozie.client.OozieClient.getJobInfo(OozieClient.java:1033

)

不确定在哪里设置“wait_timeout”/“autoReconnect”属性。是否在 oozie 工作流 xml 中的每个操作级别设置？

问候阿努吉梅赫拉

Answer 1

根据 MapR 技术支持工程师 Prakhar Verma 的说法，您可以在代码中忽略这些无害的异常。请重新编写您的 java 代码。