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[IMPALA-1164] NDV Aggregate Function returns a STRING not a BIGINT - Impala - [issue]
...Documentation says NDV should return BIGINT. However:> CREATE TABLE test_ndv (> value STRING> );...>  INSERT INTO TABLE test_ndv VALUES ( "a" );>  INSERT INTO TABLE ...
http://issues.cloudera.org/browse/IMPALA-1164    Author: David Ross, 2014-09-18, 08:48
[IMPALA-1110] group_concat agg function does not work with optional separator - Impala - [issue]
...Simple reproducible case:$ CREATE TABLE test_group_concat (value STRING);...$ INSERT INTO TABLE test_group_concat VALUES ( "a" );$ INSERT INTO TABLE test_group_concat VALUES ( "b" );$ INSERT...
http://issues.cloudera.org/browse/IMPALA-1110    Author: David Ross, 2014-08-01, 10:08
Kafka, Work Distribution, and Work Stealing - Kafka - [mail # user]
...Hello,We use Kafka to distribute batches work across several boxes. These batchesmay take anywhere from 1 hour to 24 hours to complete. Currently, we have Npartitions, each allocated to one ...
   Author: David Ross, 2013-01-16, 17:51
[expand - 2 more] - Re: Best practices for changing partition numbers - Kafka - [mail # user]
...I know how to change. I'm wondering what the ramifications are (losingdata, etc.).On Tue, Jan 8, 2013 at 1:41 PM, Corbin Hoenes  wrote:> David>> Sounds like there is an admin d...
   Author: David Ross, 2013-01-09, 00:26
[expand - 1 more] - Re: Thread Safety of KafkaStreams - Kafka - [mail # user]
...Yes, this was a follow up question. I was wondering if I could cheaply implement this by sharing the stream. Thanks for responses.  On Wednesday, November 21, 2012, David Arthur wrote: ...
   Author: David Ross, 2012-11-21, 15:52
Designing HBase schema to best support specific queries - HBase - [mail # user]
...Howdy,  I have an HBase schema-design related question. The problem is fairly simple - I am storing "notifications" in hbase, each of which has a status ("new", "seen", and "read"). Her...
   Author: David Ross, 2012-01-24, 07:48
[expand - 1 more] - Re: [0.6] Consumer API Question - What if a ConsumerIterator has an error? - Kafka - [mail # user]
...Another problem - just taking toString of an iterator in a failed state throws an exception.  On Thu, Dec 22, 2011 at 1:40 AM, David Ross  wrote:  ...
   Author: David Ross, 2012-01-05, 01:33
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