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blog on compaction - HBase - [mail # user]
...Hi, Recently there have been some questions and answers on compaction in HBase.  I came up with the following blog which covers a portion of the discussions:  http...
...://zhihongyu.blogspot.com/2013/03/compactions-q.html  Special thanks go to J-D, Anoop, Ramkrishna, Sergey, Elliot and Jean-Marc.  Cheers ...
2 emails [+ more]    Author: Ted Yu, 2013-03-26, 17:19
Re: HBase compaction question - HBase - [mail # user]
... compactions have reduced the number of HFiles to acceptable level. You should take a look at http://hbase.apache.org/book.html#hbase_metrics, especially 15.4.4.12. NumberOfStorefiles Cheers On Fri...
   Author: Ted Yu, 2014-02-21, 23:56
Re: Disabled automated compaction - table still compacting - HBase - [mail # user]
...Do you specify startTime and endTime parameters for the CopyTable job ?  Cheers  On Tue, Jul 9, 2013 at 4:38 AM, David Koch  wrote:  ...
   Author: Ted Yu, 2013-07-09, 14:58
Re: Check if a region is compacting or not - HBase - [mail # user]
...In HBaseAdmin, we have:   public CompactionState getCompactionState(final String tableNameOrRegionName)       throws IOException, InterruptedException {  FYI   On Tue, Sep 3, 2013 at 10...
   Author: Ted Yu, 2013-09-04, 14:21
Re: Deleted cells surviving compaction - HBase - [mail # user]
...Please take a look at HBASE-10118 'Major compact keeps deletes with future timestamps' Cheers On Tue, Mar 25, 2014 at 5:44 PM, David Larsen  wrote:   ...
   Author: Ted Yu, 2014-03-26, 02:23
Re: Question about compactions - HBase - [mail # user]
...Related to this discussion, Jimmy provided some function to check for compaction state in HBASE-6033. But that is in 0.95 only.  On Thu, Mar 21, 2013 at 10:49 AM, Jean-Daniel Cryans wrote:  ...
   Author: Ted Yu, 2013-03-21, 18:08
Re: HBase without compactions? - HBase - [mail # user]
...Take a look at HBASE-7667 Support stripe compaction  Cheers  On Mon, Feb 18, 2013 at 7:30 PM, Otis Gospodnetic  wrote:  ...
2 emails [+ more]    Author: Ted Yu, 2013-02-19, 04:54
Re: number of store files and compaction - HBase - [mail # user]
...bq. will hbase.hstore.blockingStoreFiles still take effect? Yes. bq. does it trigger a minor compaction or major one Minor compaction, unless all store files are selected where...
... the compaction becomes major. On Fri, Feb 7, 2014 at 8:05 AM, Yu, Libo  wrote:   ...
   Author: Ted Yu, 2014-02-07, 16:57
Re: HBase (Compaction and Region) Event Listeners - HBase - [mail # user]
...Otis: In BaseRegionObserver, you can find these hooks:   public void preCompactSelection(final ObserverContext c,       final Store store, final List candidates, final Compaction...
...Request request)   public void postCompactSelection(final ObserverContext c,       final Store store, final ImmutableList selected, CompactionRequest request) {   public InternalScanner preCompact...
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   Author: Ted Yu, 2014-05-29, 04:02
Re: Region statistics created during major compaction - HBase - [mail # user]
...Interesting idea. How would the ranges of rows be determined per region ? This reminds me of stripe compaction feature which is in 0.98 See HBASE-7667 Cheers On Apr 30, 2014, at 3...
   Author: Ted Yu, 2014-04-30, 10:26
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