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Re: Get all rows that DON'T have certain qualifiers - HBase - [mail # user]
...Hi Amit, Using Phoenix, the SQL skin over HBase (https://github.com/forcedotcom/phoenix), you'd do this:  select * from myTable where value1 is null or value2 is null  Regards, Jam...
   Author: James Taylor, 2013-05-14, 15:39
[expand - 1 more] - Re: [DISCUSS] Namespace Delimiter - HBase - [mail # dev]
...Sorry, didn't explain the current Phoenix behavior correctly. Phoenix  uses "." in table names currently by combining the  and   together with a "." as the separator.  Fo...
   Author: James Taylor, 2013-05-08, 19:02
[expand - 3 more] - Re: Coprocessors - HBase - [mail # user]
...Sudarshan, Below are the results that Mujtaba put together. He put together two version of your schema: one with the ATTRIBID as part of the row key and one with it as a key value. He also b...
   Author: James Taylor, 2013-05-02, 00:01
Re: Very poor read performance with composite keys in hbase - HBase - [mail # user]
...Have you had a look at Phoenix (https://github.com/forcedotcom/phoenix)? It'll use all of the parts of your row key and depending on how much data you're returning back to the client, will q...
   Author: James Taylor, 2013-04-30, 21:15
Re: Read access pattern - HBase - [mail # user]
...bq. The downside that I see, is the bucket_number that we have to  maintain both at time or reading/writing and update it in case of  cluster restructuring.  I agree that this...
   Author: James Taylor, 2013-04-30, 16:40
Re: HBase and Datawarehouse - HBase - [mail # user]
...Phoenix will succeed if HBase succeeds. Phoenix just makes it easier to  drive HBase to it's maximum capability. IMHO, if HBase is to make  further gains in the OLAP space, scans n...
   Author: James Taylor, 2013-04-30, 06:28
Re: [VOTE] The 2nd hbase 0.94.7 release candidate is available for download - HBase - [mail # dev]
...+1  Downloaded and installed on our internal dev cluster. Verified overall  performance and stability, along with "essential column family"  performance improvement (which is ...
   Author: James Taylor, 2013-04-25, 22:04
[HBASE-8403] Allow column family to be declared as containing only fixed length KeyValues to improve scan performance - HBase - [issue]
...HBase scan performance could be improved in cases where a column family is known to have only fixed length KeyValues (and perhaps in addition non nullable). A custom block encoding could lev...
http://issues.apache.org/jira/browse/HBASE-8403    Author: James Taylor, 2013-04-23, 19:43
Re: Speeding up the row count - HBase - [mail # user]
...Phoenix will parallelize within a region:  SELECT count(1) FROM orders  I agree with Ted, though, even serially, 100,000 rows shouldn't take any where near 6 mins. You say > 100...
   Author: James Taylor, 2013-04-19, 15:59
[expand - 3 more] - Re: Essential column family performance - HBase - [mail # user]
...Good idea, Sergey. We'll rerun with larger non essential column family  values and see if there's a crossover point. One other difference for us  is that we're using FAST_DIFF enco...
   Author: James Taylor, 2013-04-09, 01:53
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB