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[expand - 1 more] - Re: Increment Counters in HBase during MapReduce - HBase - [mail # user]
...There are a couple of issues and I'm sure others will point them out.   If you turn off speculative execution on the job, you don't get  duplicate tasks running in parallel.  ...
   Author: Michael Segel, 2012-06-24, 23:19
Re: When node is down - HBase - [mail # user]
...Assuming that you have an Apache release (Apache, HW, Cloudera) ...  (If MapR, replace the drive and you should be able to repair the cluster  from the console. Node doesn't go dow...
   Author: Michael Segel, 2012-06-22, 03:35
Re: Data locality in HBase - HBase - [mail # user]
...While data locality is nice, you may see it becoming less of a bonus or  issue.   With Co-processors available, indexing becomes viable.  So you may see  things where wit...
   Author: Michael Segel, 2012-06-21, 12:45
Re: performance of Get from MR Job - HBase - [mail # user]
...I think the version issue is the killer factor here.   Usually performing a simple get() where you are getting the latest  version of the data on the row/cell occurs in some consta...
   Author: Michael Segel, 2012-06-21, 12:33
[expand - 1 more] - Re: delete rows from hbase - HBase - [mail # user]
...Hi,  Ok...  Just a couple of nits...  1) Please don't write your Mapper and Reducer classes as inner classes.   I don't know who started this ... maybe its easier as exam...
   Author: Michael Segel, 2012-06-20, 14:10
Re: Isolation level - HBase - [mail # user]
...Since you don't have OLTP,  the terms need to be better defined.  What is meant by an uncommitted_ write in HBase?  RLL in RDBMS is different than RLL in HBase. You don't have...
   Author: Michael Segel, 2012-06-18, 11:46
[expand - 3 more] - Re: Pre-split table using shell - HBase - [mail # user]
...?Inferred sigh of despair?  Was it that obvious? :-)  I'm not sure what hardware you're running on so its hard to say.   Here's the problem... On each DN, you're running a DN ...
   Author: Michael Segel, 2012-06-12, 16:09
Re: HBase dies after some time - HBase - [mail # user]
...Hi, Sorry for the late post to this thread...  To add what Harsh has to say...  YOU NEVER, NEVER EVER RUN ZK ON THE SAME NODE AS YOUR TTs.  Sorry for shouting but that's a cor...
   Author: Michael Segel, 2012-06-11, 12:11
Re: Region autoSplit when not reach 'hbase.hregion.max.filesize' ? - HBase - [mail # user]
...Just out of curiosity, describe the data? Sorted? The more we know, the easier it is to help... Also, can you recheck your mat h ?   Sent from my iPhone  On Jun 6, 2012, at 6:17 PM...
   Author: Michael Segel, 2012-06-07, 02:19
Re: Shared Cluster between HBase and MapReduce - HBase - [mail # user]
...It depends... There are some reasons to do this however in general, you don' t need to do this...   The course is wrong to suggest this as a best practice.  Sent from my iPhone &nb...
   Author: Michael Segel, 2012-06-07, 02:14
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