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[expand - 2 more] - Re: Compactions nice to have features - HBase - [mail # dev]
...I have been playing with out-of-process compaction currently. I will postmy results (and patch) when it is ready. The compaction in HBase is thearea of a multitude of possible improvements.-...
   Author: Vladimir Rodionov, 2014-10-10, 16:23
[expand - 1 more] - Re: The 3rd hbase 0.94.24 release candidate is available for download - HBase - [mail # dev]
...2?Can you check sequential scan as well? Make sure data is in the block cache.-Vladimir RodionovOn Thu, Oct 2, 2014 at 10:28 AM, Jean-Marc Spaggiari <[EMAIL PROTECTED]> wrote: ...
   Author: Vladimir Rodionov, 2014-10-02, 18:10
[expand - 1 more] - Re: Could you please stop breaking API compatibility? - HBase - [mail # dev]
...Yes, sureI just forgot that master is 2.0.-Vladimir RodionovOn Mon, Sep 29, 2014 at 9:09 PM, Anoop John  wrote: ...
   Author: Vladimir Rodionov, 2014-09-30, 04:23
[expand - 5 more] - Re: HBase reads, isolation levels and RegionScanner internal locking - HBase - [mail # dev]
...All row mutate operations in HBase are atomic: puts/deletes/increments/appends.Atomicity in HBase has the same meaning as in RDBMs exactly - operationscompletes as a whole or does not at all...
   Author: Vladimir Rodionov, 2014-09-12, 20:21
[HBASE-11898] CoprocessorHost.Environment should cache class loader instance - HBase - [issue]
...HBASE-9941 fix causes additional overhead... It looks like for every invocation it does a getClassLoader call....
http://issues.apache.org/jira/browse/HBASE-11898    Author: Vladimir Rodionov, 2014-09-05, 20:53
[HBASE-11854] MetricsRegion.updateScanNext takes 20% of overall RegionScannerImpl.nextRaw call - HBase - [issue]
...From our internal profiling we were surprised by amount of time spent in this call. Further investigation is needed....
http://issues.apache.org/jira/browse/HBASE-11854    Author: Vladimir Rodionov, 2014-09-03, 00:22
[expand - 2 more] - Re: 0.98-trunk build (pom) issue - HBase - [mail # dev]
...-Phadoop.version=2.2 worked fine to me. I was able to build package andcreate eclipse workspace. I just checked dependencies and all hadoop libsare 2.2?-Vladimir RodionovOn Thu, Aug 14, 2014...
   Author: Vladimir Rodionov, 2014-08-14, 17:52
Re: how to do parallel scanning in map reduce using hbase as input? - HBase - [mail # dev]
...I am working on improving inter-region scan performance and have the patchalready. The patch will be committed as soon as all tests are done. Thisshould improve M/R over HBase performance be...
   Author: Vladimir Rodionov, 2014-07-24, 20:24
[expand - 2 more] - Re: Strange log messages during scan operations - HBase - [mail # dev]
...OK, seems they are harmless ... but  I do not do anydeletes/writes/updates - only reads. There is a substantial delay betweenmajor compaction finish and last message in  a log file...
   Author: Vladimir Rodionov, 2014-07-15, 18:54
Re: Gathering opinions and recommendations - HBase - [mail # dev]
...Thanks, everyoneI think we will go with 0.98.2-VladimirOn Tue, May 27, 2014 at 3:41 PM, Demai Ni  wrote: ...
   Author: Vladimir Rodionov, 2014-05-27, 23:30
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