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[proposal] HUG, March 27 @ SU - HBase - [mail # user]
...Looking for +1s on a March 27th HBase Users Group.  Just want to make sure  there are no huge conflicts before we post the official meetup.  StumbleUpo n has shiny new office ...
   Author: Nicolas Spiegelberg, 2012-03-07, 21:48
Re: DISCUSS: Have hbase require at least hadoop 1.0.0 in hbase 0.96.0? - HBase - [mail # dev]
...I'm wondering why HDFS security support should be mandatory?  Append makes sense because there's no way to have a durable system without it. Security is currently an optional feature & ...
   Author: Nicolas Spiegelberg, 2012-03-02, 20:57
Re: manual trigger of major compaction does not seems to work on 0.92 - HBase - [mail # dev]
...In 0.92, we can handle multiple compactions but we wait on major compact if minor compactions are ongoing for the same store.  It should be enqueued and work after the minor compaction ...
   Author: Nicolas Spiegelberg, 2012-02-24, 16:36
[expand - 2 more] - Re: LIRS cache as an alternative to LRU cache - HBase - [mail # dev]
...In general, I agree about making isolated algorithms pluggable.  In this particular case, I think that Ted was trying to gather consensus on ways to increase cache efficiency with LIRS ...
   Author: Nicolas Spiegelberg, 2012-02-21, 18:53
Re: HBase and Data Locality - HBase - [mail # user]
...Note that the importance of non-peak major compactions should be mitigated in 0.92 with multi-threaded compactions.  This config recommendation is not a general solution but a way to co...
   Author: Nicolas Spiegelberg, 2012-02-21, 16:56
[expand - 4 more] - Re: Major Compaction Concerns - HBase - [mail # dev]
...Since Bloom Filters are a probabilistic optimization, it's kinda hard to analyze your efficiency.  Mostly, we rely on theory and a little bit of experimentation.  Basically, you wa...
   Author: Nicolas Spiegelberg, 2012-02-20, 03:47
Re: Scans and Bloom Filter - HBase - [mail # user]
...Bryan,  Currently, ROW & ROWCOL Bloom Filters are only checked for explicit, single-row 'Get' scans.  ROWCOL BFs are only checked when you're querying for explicit column qualifier...
   Author: Nicolas Spiegelberg, 2012-02-16, 20:52
Re: Set like functionality - HBase - [mail # user]
...A lot of your design depends on your read/write rate & the amount of duplication in your inserts.  For example, if your read rate is really low and your write rate is really high with a...
   Author: Nicolas Spiegelberg, 2012-02-10, 19:52
Re: svn commit: r1239930 - in /hbase/branches/0.89-fb/src: main/java/org/apache/hadoop/hbase/master/SplitLogManager.java test/java/org/apache/hadoop/hbase/master/TestSplitLogManager.java - HBase - [mail # dev]
...@Stack: this is an 89-master change.  It should have that tag.  I'll look to figure out why the precommit hook isn't working properly.  On 2/2/12 8:59 PM, "Stack"  wrote:...
   Author: Nicolas Spiegelberg, 2012-02-03, 18:52
[expand - 6 more] - Re: hbase 0.94.0 - HBase - [mail # dev]
...Correct.  Sorry for the confusion.  I just meant that we shouldn't get rid of the HFileV1 Reader because it allows online upgrades to happen as compactions happen.  Trying to ...
   Author: Nicolas Spiegelberg, 2012-02-03, 01:24
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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