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Re: hbase olap cube - HBase - [mail # user]
...Hi Oleg,  Try this  http://github.com/urbanairship/datacube Andrew Purtell recommended it here when I had a similar need. I didn't need things like sum and average so I ended up us...
   Author: Amit Sela, 2013-01-16, 12:13
[expand - 4 more] - Re: Can a RegionObserver coprocessor increment counter of a row key that may not belong to the region ? - HBase - [mail # user]
...Got it, so if my coprocessor is aggregating through the Increment that was executed and I am using the aggregated values to increment a new counter in the *same row and same FAMILIES *but a ...
   Author: Amit Sela, 2012-12-06, 13:42
[expand - 1 more] - Re: scan is slower after bulk load - HBase - [mail # user]
...I gave it a few more shots and it was back to normal... Bulk loading is faster but more important (for us) it's more stable and doesn't cause full GC in the region server even if loading it ...
   Author: Amit Sela, 2012-11-23, 17:22
[expand - 4 more] - Re: Bulk load fails with NullPointerException - HBase - [mail # user]
...After some digging into the code it looks like this bug also affects bulk load when using LoadIncrementalHFiles (bulk loading programmatically). We  fixed the code in Compression.class ...
   Author: Amit Sela, 2012-11-15, 16:09
Bulk Loading - LoadIncrementalHFiles - HBase - [mail # user]
...Hi everyone,  I'm using MR to bulk load into HBase by using HFileOutputFormat.configureIncrementalLoad and after the job is complete I use loadIncrementalHFiles.doBulkLoad  underst...
   Author: Amit Sela, 2012-11-01, 17:03
Re: ANN: HBase 0.94.2 is available for download - HBase - [mail # user]
...+1 on pushing to maven repo.  Thanks.  On Wed, Oct 17, 2012 at 1:49 PM, Ramkrishna.S.Vasudevan  wrote:  ...
   Author: Amit Sela, 2012-10-18, 15:25
hdfs upgrade timing - HBase - [mail # user]
...Hi all,  Anyone has a clue how long it takes to upgrade HDFS from from 0.20.3 to 1.0.3 ?  And to upgrade HBase from 0.90.2 to 0.94 ?  I guess it depends on cluster size, so le...
   Author: Amit Sela, 2012-10-17, 09:55
[expand - 2 more] - Re: hbase 0.92.1 hadoop compatibility - HBase - [mail # user]
...I think it is time for an upgrade...  Cheers.  On Tue, Oct 16, 2012 at 3:54 PM, Stack  wrote:  ...
   Author: Amit Sela, 2012-10-16, 15:21
extending PutSortReducer - HBase - [mail # user]
...Hi all,  Has anyone tried extending PutSortReducer in order to add some traditional reduce logic (i.e, aggregating counters) ?  I want to process data with hadoop mapreduce job (ag...
   Author: Amit Sela, 2012-10-16, 15:18
[expand - 2 more] - Re: Optimizing table scans - HBase - [mail # user]
...So just to get it straight. The reason the scan with setBatch(1) is much much faster is because it returns the only the value for the first column ?  On Wed, Sep 12, 2012 at 5:37 PM, Do...
   Author: Amit Sela, 2012-09-15, 09:11
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