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[HBASE-4435] Add Group By functionality using Coprocessors - HBase - [issue]
...Adds in a Group By -like functionality to HBase, using the Coprocessor framework. It provides the ability to group the result set on one or more columns (groupBy families). It computes stati...
http://issues.apache.org/jira/browse/HBASE-4435    Author: Nichole Treadway, 2013-01-02, 01:31
[HBASE-3782] Multi-Family support for bulk upload tools causes File Not Found Exception - HBase - [issue]
...I've been testing HBASE-1861 in 0.90.2, which adds multi-family support for bulk upload tools.I found that when running the importtsv program, some reduce tasks fail with a File Not Found ex...
http://issues.apache.org/jira/browse/HBASE-3782    Author: Nichole Treadway, 2012-09-14, 00:32
[HBASE-4223] Support the ability to return a set of rows using Coprocessors - HBase - [issue]
...Currently HBase supports returning the results of aggregation operations using coprocessors with the AggregationClient. It would be useful to include a client and implementation which would ...
http://issues.apache.org/jira/browse/HBASE-4223    Author: Nichole Treadway, 2012-08-23, 20:08
[expand - 1 more] - Re: ZKConfig.makeZKProps throwing NullPointerException - HBase - [mail # user]
...Sorry, I forgot to mention:  I'm using hadoop-0.20-append, hbase-0.92 on two red hat 5.5 machines.   The function I pasted is in org.apache.hadoop.hbase.zookeeper.ZKConfig.   ...
   Author: Nichole Treadway, 2011-08-15, 12:47
[expand - 1 more] - Re: Socket Timeout Exception when executing coprocessor - HBase - [mail # user]
...Yes...each region has roughly 300,000 rows, 60 million rows total. The rows are large, ~ 20,000 bytes.  But in my tests, I'm setting filters such that only 1 KV should be returned to th...
   Author: Nichole Treadway, 2011-06-29, 22:58
[expand - 1 more] - Re: Migration Path for 0.90 to 0.91 - HBase - [mail # user]
...No I was wondering about 0.91 actually....we are interested in the Coprocessor code there but have a development cluster running 0.90.1 right now.  On Wed, Mar 30, 2011 at 3:27 PM, Jean...
   Author: Nichole Treadway, 2011-03-30, 19:35
[expand - 1 more] - Re: HRegionInfo was null or empty in -ROOT- - HBase - [mail # user]
...In the master logs, I see messages like I've pasted below. I get the same behavior even when I stop master and restart it. I see the root and meta table regions listed in the region server u...
   Author: Nichole Treadway, 2011-03-30, 17:36
Expected Times when doing bulk load using importtsv - HBase - [mail # user]
...I have a question about expected times for the importtsv program  My cluster has four nodes. All four machines are datanodes / regionservers / tasktrackers, with one node also acting as...
   Author: Nichole Treadway, 2011-03-24, 15:16
Re: RowKey using importtsv - HBase - [mail # user]
...I ran into this issue as well recently.  Out of the box you can only specify one field as the row key, using HBASE_ROW_KEY as an argument to the importtsv program. I had to create my ow...
   Author: Nichole Treadway, 2011-03-21, 20:35
FileNotFoundException in Reduce step when running importtsv program - HBase - [mail # user]
...Hi all,  I am attempting to bulk load data into HBase using the importtsv program. I have a very wide table (about 200 columns, 2 column families), and right now I'm trying to load in d...
   Author: Nichole Treadway, 2011-03-17, 18:58
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