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Major vs Minor compactions - HBase - [mail # user]
...Hi,  I am working on some compaction coprocessors for a column family with versions set to 1. I am using the preCompact hook to wrap a scanner around the compaction scanner.  I wanted...
... to know what to expect from the minor compaction output. Can I assume the following: 1) Versions for each cell will be 1 2) Delete markers will be retained 3) Corresponding versions older than...
[+ more]    Author: Varun Sharma, 2013-05-29, 20:27
Effect of region size on compaction performance - HBase - [mail # user]
.... However, I am worried many regions will cause longer overall compactions of the HBase data. Is this the case? I am thinking about extending TableInputFormat to override the 1-map...
[+ more]    Author: David Koch, 2014-03-23, 01:58
Re: Question about compactions - HBase - [mail # user]
...Hi,  A few pointers: http://search-hadoop.com/m/heoc617XV29/otis+compactions&subj=Re+How+to+check+if+a+major_compact+is+done+ http://search-hadoop.com/m/BDx4S1jMjF92/otis+compactions&subj=How+to+know+it+s+time+for+a+major+compaction...
...+ http://search-hadoop.com/m/9oN1DqPx2R1/otis+compactions&subj=Compaction+throttling+and+per+region+compaction+automation http://search-hadoop.com/m/u0hsW82Vcr/otis+compactions&subj=How+to+pick+which+region+s+to+major+compact...
[+ more]    Author: Otis Gospodnetic, 2013-03-22, 01:13
Re: HBase without compactions? - HBase - [mail # user]
...He asked for a compactionless version.  You still have compactions w a stripe compaction.    On Feb 18, 2013, at 10:54 PM, Ted Yu  wrote:  ...
[+ more]    Author: Michael Segel, 2013-02-19, 05:46
Problem In Understanding Compaction Process - HBase - [mail # user]
...Hi: Guys        I have some problem in understanding the compaction process, Can someone shed some light on me, much appreciate. Here is the problem:        Region Server after successfully...
... generate the final compacted file, it going through two steps:        1. move the above compacted file into region's directory        2. delete replaced files.         the above two steps...
[+ more]    Author: Anty, 2013-02-20, 03:10
HConstants.MAJOR_COMPACTION_PERIOD - HBase - [mail # user]
...Hi, Where should I set it?  HConstants.MAJOR_COMPACTION_PERIOD Yaniv View this message in context: http://apache-hbase.679495.n3.nabble.com/HConstants-MAJOR-COMPACTION-PERIOD-tp4055960...
[+ more]    Author: yanivG, 2014-02-13, 16:09
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
Never ending major compaction? - HBase - [mail # user]
..., and there is a lot of horsepower behind it.  I asked a major_compaction few hours ago. Let's say, about 5 hours ago. and it's still compacting! But all servers activities seems to be null. CPU usage...
... is almost 0.  There is nothing on the master logs.  How can I see what's going on? Is there a way to see the compaction queue?  JM ...
[+ more]    Author: Jean-Marc Spaggiari, 2013-01-01, 19:42
Checking major compaction - HBase - [mail # user]
...Hi all,  Is there a way to check if major compaction is running or not on a table.  Thank you Kiran Sarvabhotla  ...
[+ more]    Author: kiran, 2012-10-18, 06:12
Re: how to know run major compact successfully? - HBase - [mail # user]
...finally, it become 100%. How I don't know how to reproduce it. What I have done is deleting many rows and in hbase shell executing "major_compact 'tablename'" On Thu, Jun 19, 2014 at 7...
[+ more]    Author: Li Li, 2014-06-20, 01:50
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