Hi Evelina! You've posted the logs for the MapReduce ApplicationMaster . From this I can see the reducer timed out after 600 secs : 2017-04-21 00:24:07,747 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl: Diagnostics report from attempt_1492722585320_0001_r_000000_0: AttemptID:attempt_1492722585320_0001_r_000000_0 Timed out after 600 secs
To find out why the reducer timed out, you'd have to go look at the logs of the reducer. These too are available from the RM page (where you got these logs)..... just click a few more links deeper. HTH Ravi On Fri, Apr 21, 2017 at 1:58 AM, evelina dumitrescu < evelina.a.dumitre...@gmail.com> wrote: > The Hadoop version that I use is 2.7.1 and the Hbase version is 1.2.5. > I can do any operation from the HBase shell. > > > On Fri, Apr 21, 2017 at 8:01 AM, evelina dumitrescu < > evelina.a.dumitre...@gmail.com> wrote: > >> Hi, >> >> I am new to Hadoop and Hbase. >> I was trying to make a small proof-of-concept Hadoop map reduce job that >> reads the data from HDFS and stores the output in Hbase. >> I did the setup as presented in this tutorial [1]. >> Here is the pseudocode from the map reduce code [2]. >> The problem is that I am unable to contact Hbase from the Hadoop job and >> the job gets stuck. >> Here are the logs from syslog [3], stderr [4] and console [5]. >> How should I correctly setup HbaseConfiguration ? >> I couldn't find any example online that worked and it's hard for a >> beginner to debug the issue. >> Any help would be appreciated. >> >> Thank you, >> Evelina >> >> [1] >> http://www.bogotobogo.com/Hadoop/BigData_hadoop_HBase_Pseudo >> _Distributed.php >> [2] >> https://pastebin.com/hUDAMMes >> [3] >> https://pastebin.com/XxmWAUTf >> [4] >> https://pastebin.com/fYUYw4Cv >> [5] >> https://pastebin.com/YJ1hERDe >> > >
