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Re: HBase and Datawarehouse - HBase - [mail # user]
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...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...
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Author: James Taylor,
2013-04-30, 06:28
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Re: Coprocessors - HBase - [mail # user]
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...Our performance engineer, Mujtaba Chohan has agreed to put together a benchmark for you. We only have a four node cluster of pretty average boxes, but it should give you an idea....
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Author: James Taylor,
2013-04-25, 23:51
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Re: Coprocessors - HBase - [mail # user]
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...Thanks for the additional info, Sudarshan. This would fit well with the implementation of Phoenix's skip scan. CREATE TABLE t ( object_id INTEGER NOT NULL, &n...
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Author: James Taylor,
2013-04-25, 23:00
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Re: Coprocessors - HBase - [mail # user]
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...On 04/25/2013 03:35 PM, Gary Helmling wrote: Sudarshan, In our head branch of Phoenix (we're targeting this for a 1.2 release in two weeks), we've implemented a skip scan filter ...
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Author: James Taylor,
2013-04-25, 22:44
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Re: [VOTE] The 2nd hbase 0.94.7 release candidate is available for download - HBase - [mail # dev]
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...+1 Downloaded and installed on our internal dev cluster. Verified overall performance and stability, along with "essential column family" performance improvement (which is ...
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Author: James Taylor,
2013-04-25, 22:04
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[HBASE-8403] Allow column family to be declared as containing only fixed length KeyValues to improve scan performance - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-8403
Author: James Taylor,
2013-04-23, 19:43
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Re: Speeding up the row count - HBase - [mail # user]
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...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...
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Author: James Taylor,
2013-04-19, 15:59
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Re: Essential column family performance - HBase - [mail # user]
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...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...
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Author: James Taylor,
2013-04-09, 01:53
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Re: Best way to query multiple sets of rows - HBase - [mail # user]
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...Hi Greame, Are you familiar with Phoenix (https://github.com/forcedotcom/phoenix), a SQL skin over HBase? We've just introduced a new feature (still in the master branch) that'll...
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Author: James Taylor,
2013-04-08, 18:39
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Re: Essential column family performance - HBase - [mail # user]
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...In the TestJoinedScanners.java, is the 40% randomly distributed or sequential? In our test, the % is randomly distributed. Also, our custom filter does the same thing that ...
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Author: James Taylor,
2013-04-08, 17:38
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