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Online Schema Changes - HBase - [mail # user]
...Is it safe to turn it on for a "single-admin" cluster? I guess it's off to prevent from concurrent changes...   On Tue, Oct 29, 2013 at 5:29 PM, Ted Yu  wrote:  > In 0.96.0...
   Author: Adrien Mogenet , 2013-10-31, 10:14
[expand - 2 more] - Spatial data posting in HBase - HBase - [mail # user]
...This is also what I had in mind. Computing the neighbors and/or the higher level of a "tile" is a quite easy bit manipulation. Dealing with equator corner cases must not be considered as an ...
   Author: Adrien Mogenet , 2013-10-13, 10:33
Thread safety of Bytes.compareTo(byte[] left, byte[] right) - HBase - [mail # user]
...Hi,  A static method does not necessary mean that this could lead to a thread-safety issue. In that case, there is no shared resources between threads and thus... nothing to protect. &n...
   Author: Adrien Mogenet , 2013-10-10, 12:59
Strange behavior of "blockCacheSize" metric with LruBlockCache - HBase - [mail # user]
...When enabling the direct memory allocation [HBASE-4027] I'm observing strange values for the blockCacheSize metric.  With usual cache, values are slowly growing around 1 GB When I'm ena...
   Author: Adrien Mogenet , 2013-09-10, 21:25
How is pig so much faster than my java MR job? - HBase - [mail # user]
...You should have a kind of debug/explain mode in Pig, and will show you how it does clever things to optimize its excution path.   On Mon, Sep 2, 2013 at 3:45 PM, Dhaval Shah wrote: &nbs...
   Author: Adrien Mogenet , 2013-09-02, 13:50
[expand - 1 more] - experiencing high latency for few reads in HBase - HBase - [mail # user]
...Are your GC logs enabled? Can you see any long pause in it?   On Fri, Aug 30, 2013 at 4:45 AM, Kiru Pakkirisamy  wrote:  > I just moved from 0.94.10 to 0.94.11. Tremendous ...
   Author: Adrien Mogenet , 2013-08-30, 06:11
[HBASE-9341] Document hbase.hstore.compaction.kv.max - HBase - [issue]
...This setting is used within Compactor.java, apparently since 0.90 but has never been documented. It could be useful for people using very wide rows or those who want to fine tune their compa...
http://issues.apache.org/jira/browse/HBASE-9341    Author: Adrien Mogenet , 2013-08-29, 03:21
[expand - 2 more] - Get the latest timestamp of a Storefile - HBase - [mail # dev]
...Alright, then I've opened a ticket to put what I have in mind ( https://issues.apache.org/jira/browse/HBASE-9260)  I did some basic code changes and tests to see/check if it's really re...
   Author: Adrien Mogenet , 2013-08-18, 12:42
Batch.call and dead Region Server. - HBase - [mail # user]
...You could use async API such as asynchbase -that you've mentioned- on your client side; or you can write your CP in a async way. IMHO it mostly depends on your API contract and its guarantee...
   Author: Adrien Mogenet , 2013-07-21, 19:56
HBase 0.94.9 and Java 7 - HBase - [mail # user]
...Guys from Sematext have done some studies, especially about the new GC supplied with Java7. AFAIK no real issue has been spotted so far.   On Wed, Jul 17, 2013 at 6:08 AM, Ionut Ignates...
   Author: Adrien Mogenet , 2013-07-17, 08:55