我能够触发 select * 类型的查询，但不能触发 select col1....类型的查询。 它抛出以下异常
Error during job, obtaining debugging information...
Examining task ID: task_201305021530_0007_m_000002 (and more) from job job_201305021530_0007
Exception in thread "Thread-90" java.lang.RuntimeException: Error while reading from task log url
at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getStackTraces(TaskLogProcessor.java:240)
at org.apache.hadoop.hive.ql.exec.JobDebugger.showJobFailDebugInfo(JobDebugger.java:227)
at org.apache.hadoop.hive.ql.exec.JobDebugger.run(JobDebugger.java:92)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.net.UnknownHostException: avishkar-VB
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:378)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:473)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:203)
at sun.net.www.http.HttpClient.New(HttpClient.java:290)
at sun.net.www.http.HttpClient.New(HttpClient.java:306)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:995)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:931)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:849)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1299)
at java.net.URL.openStream(URL.java:1037)
at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getStackTraces(TaskLogProcessor.java:192)
... 3 more
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask
MapReduce Jobs Launched:
最佳答案
@Ankur 我找到了这个问题的解决方案。需要在classPath中添加hive-contrib-..*.jar的路径。或者，您可以在触发任何查询之前在 hive CLI 中添加此路径 像这样:
添加jar/home/hadoop/hive/lib/hive-contrib-0.8.1.jar; (注意hive的版本)关于regex - 无法查询正在使用正则表达式解析数据的外部 Hive 表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16338448/