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[expand - 1 more] - 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...
   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
[expand - 6 more] - Re: Non-sensical? Compaction Metrics Hbase UI - HBase - [mail # user]
...nice, just took a look at this path in my system. I see the growth but that would only apply to major_compactions where all files are picked up and compacted because minor compactions won...
...'t be trackable this way without knowing which files were selected by the compaction algorithm. is there a method for getting progress on these? On Mon, Aug 11, 2014 at 3:14 PM, Bryan Beaudreault...
   Author: Geovanie Marquez, 2014-08-11, 20:32
[expand - 1 more] - Smart Managed Major Compactions - HBase - [mail # user]
...Hello all,   Before I start, I'm running cdh3u2, so 0.90.4.  I am looking into managing major compactions ourselves, but there doesn't appear to be any mechanisms I can hook in to determine...
... which tables need compacting.  Ideally each time my cron job runs it would compact the table with the next longest time since compaction, but I can't find a way to access this metric...
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   Author: Bryan Beaudreault, 2012-07-18, 17:26
[expand - 2 more] - Restrictions during compactions - HBase - [mail # user]
...Hello,  I'm a newbie and wondering whether or not there is any restriction during HBase minor/major compactions. I read the online document but could not find any explicit mention about...
... restrictions. What I'm mostly worrying about is whether read/write operations are blocked during compactions.  The description about 'hbase.hstore.blockingWaitTime':  The time an HRegion will block...
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   Author: Takahiko Kawasaki, 2012-05-23, 13:15
[expand - 8 more] - Schedule major compaction programmatically - HBase - [mail # user]
...I would like to schedule major compaction on a region programmatically. I found the API call below which can properly achieve my goal.  HBaseAdmin.majorCompact(String table...
...OrRegionName)  It turns out to be an asynchronous call and there seems no call back parameter that can be specified. How can I validate the compaction result (e.g., success or failure) ?  Thanks Chen ...
   Author: Chen Song, 2012-05-17, 18:11
[expand - 8 more] - Did major compaction really happen? - HBase - [mail # user]
...In order to turn off major compaction, I set MAJOR_COMPACTION_PERIOD to 0. However, I checked region server log, saw major compaction “happened"  quite often:   2013-12-17 01:44:45,085 INFO...
... org.apache.hadoop.hbase.regionserver.Store: Completed major compaction of 4 file(s) in cf1 of my_table,75,1387269666255.a6b0df058bf97f2f0efe1ed75f445a2c. into b23af74c66d8477b963750feed19ef23...
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   Author: branky, 2013-12-20, 04:49
[expand - 13 more] - Re: the occasion of the major compact? - HBase - [mail # user]
...I've had a similar question... perhaps the client promotes a compaction to "major" if:  a) the threshold for compaction is reached ( hbase.hstore.compactionThreshold ) or (and?) b...
...) the maximum number of files to process in a "minor" compaction is high enough to result in all files being processed into one ( hbase.hstore.compaction.max )   Can someone confirm if this is correct...
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   Author: Neil Yalowitz, 2012-01-26, 18:16
[expand - 3 more] - heavy writing and compaction storms - HBase - [mail # user]
...Hi all,  What strategies do HBase 0.90 users employ to deal with or avoid the so-called "compaction storm"?  I'm referring to the issue referred to in 2.8.2.7 here:  http...
..., creates a level increase of Storefiles on all regions.  When a compaction threshold is reached for one region, it is usually reached for many regions... causing many, many regions to request...
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   Author: Neil Yalowitz, 2012-01-12, 17:56
[expand - 5 more] - major compaction and regionserver failure... - HBase - [mail # user]
...    I was wondering if someone could tell me what happens if a regionserver  fails during major compaction.  Are the entries that were in the compaction  queue for the failed regionserver...
... migrated along with the regions to anoth er server or are those requests for major compaction effectively lost for t hat run of major compaction?  I guess what I'm really asking is do I still  get...
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   Author: Andy Sautins, 2011-12-10, 18:37
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