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[expand - 2 more] - Re: crafting your key - scan vs. get - HBase - [mail # user]
...Thanks Ian!  Very helpful breakdown.  For this use case, I think the multi-version row structure is ruled out. We will investigate the onekey-manycolumn approach.  Also, the m...
   Author: Neil Yalowitz, 2012-10-20, 00:29
[expand - 1 more] - Re: replication - how do I know the status? - HBase - [mail # user]
...This is a great answer, I can see that particular ganglia metric sharply increased when the issue began.  Thanks much.  One followup question:  Can a distressed slave cluster ...
   Author: Neil Yalowitz, 2012-09-13, 21:28
[expand - 1 more] - Re: Pig against HBase table - successful in local mode, fails in mapreduce mode (Tasktracker thinks ZK is localhost) - Pig - [mail # user]
...This was the problem.  I was setting the classpath on the machine where the Pig query was being executed but not on the MR cluster nodes which were executing the job.  The MR clust...
   Author: Neil Yalowitz, 2012-05-16, 03:39
Pig 0.9.2 and HBaseStorage and HBaseBinaryConverter caster of a map - Pig - [mail # user]
...Is it possible to load data from an HBase table with Pig 0.9.2 and using HBaseBinaryConverter -caster on a map of values that are floats?  The O'Reilly Pig book states that it can't be ...
   Author: Neil Yalowitz, 2012-04-13, 22:55
[expand - 1 more] - Re: hive trunk (0.9.0) with CDH3u3 - JAR issue? - Hive - [mail # user]
...Solved.  This required a rebuild of the hbase-handlers JAR file.  To review the versions I'm using:  HBase: 0.90.4-cdh3u3 Hadoop: 0.20.2-cdh3u3 Hive: 0.9.0 (trunk as of Apr 6,...
   Author: Neil Yalowitz, 2012-04-09, 15:14
length and size of a column family name or qualifier vs. amount of disk storage - HBase - [mail # user]
...Hi all, here's a (not-so) hypothetical question...  How does a given column family name or a qualifier impact storage?  Would a long family or qualifer like this:    my-d...
   Author: Neil Yalowitz, 2012-02-14, 17:33
Re: the occasion of the major compact? - HBase - [mail # user]
...I've had a similar question... perhaps the client promotes a compaction to "major" if:  a) the threshold for compaction is reached ( hbase.hstore.compactionThreshold ) or (and?) b) the ...
   Author: Neil Yalowitz, 2012-01-26, 18:16
[expand - 1 more] - Re: RegionServer dying every two or three days - HBase - [mail # user]
...Hi Leonardo, excuse the late response.  I read the link that Matt sent below RE: instance type and hardware isolation a while ago and struggled with the same problem with c1.xlarge and ...
   Author: Neil Yalowitz, 2012-01-24, 21:33
multi-threaded HTablePool, incrementColumnValue, compaction and large data set - HBase - [mail # user]
...I'm seeing something unusual here and I wanted to see if it has occurred for any other HBase 0.90 users.  I've read several emails here that recommend NOT using multi-threading in an MR...
   Author: Neil Yalowitz, 2012-01-16, 01:16
[expand - 1 more] - Re: heavy writing and compaction storms - HBase - [mail # user]
...Thanks for the response, J-D.  Some followups:   Would love to, but I'm dealing with a "increment a counter" issue.  I created a separate email thread for that question since ...
   Author: Neil Yalowitz, 2012-01-12, 23:47
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