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[MAPREDUCE-2925] job -status <JOB_ID> is giving continuously info message for completed jobs on the console - MapReduce - [issue]
...This below message is coming continuously on the console.11/09/02 16:00:00 INFO mapred.ClientServiceDelegate: Failed to contact AM for job job_1314955256658_0009  Will retry..11/09/02 1...
http://issues.apache.org/jira/browse/MAPREDUCE-2925    Author: Devaraj K, 2011-11-15, 00:48
[MAPREDUCE-2994] Parse Error is coming for App ID when we click application link on the RM UI - MapReduce - [issue]
...Caused by: org.apache.hadoop.yarn.YarnException: Error parsing app ID: application_1315895242400_1 at org.apache.hadoop.yarn.util.Apps.throwParseException(Apps.java:60) at org.apache.hadoop....
http://issues.apache.org/jira/browse/MAPREDUCE-2994    Author: Devaraj K, 2011-11-15, 00:48
RE: Basic question on HDFS - MR - MapReduce - [mail # user]
...Stuti,                 No need to copy the job jar file to every machine in the cluster. You can copy the jar file to the job tracker and execute it u...
   Author: Devaraj K, 2011-10-18, 11:24
[HADOOP-7704] JsonFactory can be created only once and used for every next request to create JsonGenerator inside JMXJsonServlet - MapReduce - [issue]
...1. Currently JMXJsonServlet creates JsonFactory for every http request.Its not efficient. JsonFactory can be created only once and used for every next request to create JsonGenerator.2. Also...
http://issues.apache.org/jira/browse/HADOOP-7704    Author: Devaraj K, 2011-10-06, 13:27
RE: A question about `mvn eclipse:eclipse` - MapReduce - [mail # user]
...Hi Zhoujie,     hadoop-yarn-common is failing to resolve hadoop-yarn-api jar file.      Can you try executing install(mvn install -X) on hadoop-yarn-api and then con...
   Author: Devaraj K, 2011-09-26, 05:35
[MAPREDUCE-2982] App/Tasks progress is showing as 0% in UI even if successfully completed - MapReduce - [issue]
...Application/Tasks progress is showing as 0% in UI even if successfully completed as shown in the attached screen shots....
http://issues.apache.org/jira/browse/MAPREDUCE-2982    Author: Devaraj K, 2011-09-23, 09:38
RE: Using HADOOP for Processing Videos - MapReduce - [mail # user]
...Hi Rajen,                 You can write a mapred application, which uses the customized InputFormat and OutputFormat(If you want to produce output as ...
   Author: Devaraj K, 2011-09-20, 05:00
[MAPREDUCE-2983] All tasks are failing due to invalid shuffle port number - MapReduce - [issue]
...2011-09-12 18:43:10,361 INFO  mapreduce.Job (Job.java:printTaskEvents(1227)) - Task Id : attempt_1315831998314_0007_r_000000_0, Status : FAILEDContainer launch failed for container_1315...
http://issues.apache.org/jira/browse/MAPREDUCE-2983    Author: Devaraj K, 2011-09-14, 09:22
[MAPREDUCE-2656] Map Reduce Tasks are continously failing, when one among the several harddisks available on the TaskTracker fails. - MapReduce - [issue]
...1. Pull out one hard disk from Task tracker node (out of 10 disks pull one). Now it is noted that some jobs are failing. However process is continued. 2. Wait for sometime (15 mins) and pull...
http://issues.apache.org/jira/browse/MAPREDUCE-2656    Author: Devaraj K, 2011-09-09, 04:55
RE: No Mapper but Reducer - MapReduce - [mail # user]
...Hi Bejoy,         It is possible to execute a job with no mappers and reducers alone.      You can try this by giving the empty directory as input for the ...
   Author: Devaraj K, 2011-09-07, 08:54
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