Hi, It appears that no recent version of hadoop supports this - the hadoop code appears to have changed in 2010:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-mapreduce-project/src/java/org/apache/hadoop/mapred/TaskLogServlet.java?r1=918036&r2=918037&diff_format=f#l209 If someone could confirm that I'm working on the right lines then I'll open up a JIRA (or add to HIVE-1579) and submit a patch. Cheers, Phil. On 6 March 2012 14:13, Philip Tromans <philip.j.trom...@gmail.com> wrote: > Hi all, > > I'm running into a problem - I'm using Hive trunk (pretty recent, but > I see the bug's in trunk at time of writing as well), with Hadoop > 0.20.205.0. I have a job which fails (for a reason which is entirely > my own fault), and when it does fail Hive dies with the following > exception: > > Ended Job = job_201202291327_1399 with errors > Error during job, obtaining debugging information... > Examining task ID: task_201202291327_1399_m_000003 (and more) from job > job_201202291327_1399 > Examining task ID: task_201202291327_1399_r_000002 (and more) from job > job_201202291327_1399 > Exception in thread "Thread-342" 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:662) > Caused by: java.io.IOException: Server returned HTTP response code: > 400 for URL: > http://...:50060/tasklog?taskid=attempt_201202291327_1399_r_000002_2&start=-8193 > at > sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1436) > at java.net.URL.openStream(URL.java:1010) > at > org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:120) > ... 3 more > > When I point a web browser at the given URL, I get the following message: > > HTTP ERROR 400 > > Problem accessing /tasklog. Reason: > > Argument attemptid is required > > If I change taskid to attemptid, everything works perfectly. The code > which generates this URL appears to be in > org.apache.hadoop.hive.ql.exec.JobDebugger.java. I presume that this > code is correct for a given version of Hadoop. Which version is > currently in use in the Jenkins/Hudson build environment? I'd be happy > to change it and submit a patch to JIRA, but I guess that'd probably > break the other version of Hadoop, so perhaps some more profound > versioning type thing might be needed. > > This is the issue that HIVE-1579 is referring to. > > Cheers, > > Phil.
