Manu, If you have written UDF in Java for Hive then you need to copy your JAR on your Hadoop cluster in /usr/lib/hive/lib/ folder to hive to use this JAR.
Thank You, Manish From: Manu A [mailto:hadoophi...@gmail.com] Sent: Tuesday, September 25, 2012 3:44 PM To: user@hive.apache.org Subject: Custom MR scripts using java in Hive Hi All, I am learning hive. Please let me know if any one tried with custom Map Reduce scripts using java in hive or refer me some links and blogs with an example. when i tried i got the below error : Hadoop job information for Stage-1: number of mappers: 1; number of reducers: 0 2012-09-25 02:47:23,720 Stage-1 map = 0%, reduce = 0% 2012-09-25 02:47:56,943 Stage-1 map = 100%, reduce = 100% Ended Job = job_201209222231_0001 with errors Error during job, obtaining debugging information... Examining task ID: task_201209222231_0001_m_000002 (and more) from job job_201209222231_0001 Exception in thread "Thread-51" java.lang.RuntimeException: Error while reading from task log url at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:130) at org.apache.hadoop.hive.ql.exec.JobDebugger.showJobFailDebugInfo(JobDebugger.java:211) at org.apache.hadoop.hive.ql.exec.JobDebugger.run(JobDebugger.java:81) at java.lang.Thread.run(Thread.java:619) Caused by: java.io.IOException: Server returned HTTP response code: 400 for URL: // removed as confidential at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1313) at java.net.URL.openStream(URL.java:1010) at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:120) ... 3 more FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask MapReduce Jobs Launched: Job 0: Map: 1 HDFS Read: 0 HDFS Write: 0 FAIL Total MapReduce CPU Time Spent: 0 msec Thanks for ur help in advance :) Thanks & Regards, Manu
