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Re: How can I set the num of mappers when I use hbase RowCounter on Yarn? - HBase - [mail # user]
...Have you tried setting the following property through the command line?-D mapreduce.job.mappersRegards,ShahabOn Mon, Oct 20, 2014 at 2:24 AM, [EMAIL PROTECTED] wrote: ...
   Author: Shahab Yunus, 2014-10-20, 13:23
Re: Error during HBaseAdmin.split: Exception: org.apache.hadoop.hbase.NotServingRegionException, What does that mean? - HBase - [mail # user]
...Split is an async operation. When you call it, and the call returns, itdoes not mean that the region has been created yet.So either you wait for a while (using Thread.sleep) or check for the...
   Author: Shahab Yunus, 2014-09-17, 12:07
Re: Help: RegionTooBusyException: failed to get a lock in 60000 ms - HBase - [mail # user]
...For monotonically increasing data: can you try to do pre-splitting of thedestination table? That can help in avoiding one region getting overloadedat the time of bulkimport.Regards,ShahabOn ...
   Author: Shahab Yunus, 2014-09-05, 16:22
[expand - 1 more] - Re: state-of-the-art method for merging regions on v0.94 - HBase - [mail # user]
...Great, thanks. I just wanted to confirm my understanding that 0.98 isindeed OK.Regards,ShahabOn Thu, Aug 28, 2014 at 2:35 PM, Jean-Marc Spaggiari <[EMAIL PROTECTED]> wrote: ...
   Author: Shahab Yunus, 2014-08-28, 18:38
[expand - 3 more] - Re: writing to multiple hbase tables in a mapreduce job - HBase - [mail # user]
...Ted suggested to remove the following callTableMapReduceUtil.initTableReducerJob(otherArgs[0],null, job);You are doing 2 things in your earlier code snippet*TableMapReduceUtil.initTableMappe...
   Author: Shahab Yunus, 2014-08-26, 19:43
[expand - 3 more] - Re: Splitting an existing table with new keys. - HBase - [mail # user]
...Thanks Ted.I also wanted know that from recommendation perspective is this approacheven safe or desirable or not. Or if this is some kind of HBaseanti-pattern (splitting a same table before ...
   Author: Shahab Yunus, 2014-08-20, 20:46
Relationship between number of reducers and number of regions in the table - HBase - [mail # user]
...I couldn't decide that whether it is an HBase question or Hadoop/Yarn.In the utility class for MR jobs integerated with HBase,*org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil, *in the m...
   Author: Shahab Yunus, 2014-08-14, 12:23
Re: How to get specific rowkey from hbase - HBase - [mail # user]
...You can use the util classes provided already. Note that it won't be veryfast and you might want to try out bulk import as well (especially if it isone time or rare occurrence.) It depends o...
   Author: Shahab Yunus, 2014-08-11, 12:10
[expand - 1 more] - Re: Hbase Mapreduce API - Reduce to a file is not working properly. - HBase - [mail # user]
...Parkirat,This is a core Java concept which is mainly related to how Classinheritance works in Java and how the @Override annotation is used, and isnot Hadoop specific. (It is also used while...
   Author: Shahab Yunus, 2014-08-02, 13:05
Re: Hbase MR Job with 2 OutputForm classes possible? - HBase - [mail # user]
...There is a trick. You can use MultipleOutputs with TableMapReduceUtil. Inthe Reducer you can write to desired outputs on HDFS using MultipleOutputsand the HBase Util will do its work as is.O...
   Author: Shahab Yunus, 2014-07-31, 00:54
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