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From Time Less <timelessn...@gmail.com>
Subject Bizarro Hive (Hadoop?) Error
Date Sat, 07 May 2011 01:47:48 GMT
My cluster went corrupt-mode. I wiped it and deleted the Hive metastore and
started over. In the process, I did a "yum upgrade" which probably took me
from CDH3b4 to CDH3u0. Now everytime I submit a Hive query of complexity
requiring a map/reduce job*, I get this error:

2011-05-06 18:39:14,533 Stage-1 map = 100%,  reduce = 100%
Ended Job = job_201104081532_0509 with errors
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.ExecDriver.showJobFailDebugInfo(ExecDriver.java:889)
    at
org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:680)
    at
org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:123)
.....[snip].....
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:186)
Caused by: java.io.IOException: Server returned HTTP response code: 400 for
URL:
http://hadooptest3:50060/tasklog?taskid=attempt_201104081532_0509_m_000002_2&all=true
    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)
    ... 16 more
Ended Job = job_201104081532_0509 with exception
'java.lang.RuntimeException(Error while reading from task log url)'
FAILED: Execution Error, return code 1 from
org.apache.hadoop.hive.ql.exec.MapRedTask

It seems to me the key point in here is this:

Server returned HTTP response code: 400 for URL:
http://hadooptest3:50060/tasklog?taskid=attempt_201104081532_0509_m_000002_2&all=true

So I submitted that URL to my web browser, which said:

Problem accessing /tasklog. Reason: Argument attemptid is required

Does anyone have clues what this means?

--
Tim Ellis
Riot Games
* That is to say, simple queries like "select * from table limit 10" return
results just fine.

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