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[expand - 2 more] - Paid OSS task for performing manual major compactions - HBase - [mail # user]
...Mozilla recently had to turn off automatic scheduled major compactions  because if they happen during our peak load time, they cause an IO delay  that can destabilize our client...
... applications.  We need to put a replacement system in place as soon as possible that  can initiate the major compaction and ensure that it successfully  completed (See HBASE-2770). It would be nice...
   Author: Daniel Einspanjer, 2010-10-05, 18:11
[expand - 6 more] - Re: RegionServer crash without any errors (compaction?) - HBase - [mail # user]
...Did you look at your GC logs? Probably the compaction process is running your region server out of memory. Can you provide more details on your setup? Max heap size? Max Region HFile size...
...?   Regards, Dhaval   ________________________________  From: John  To: [EMAIL PROTECTED]  Sent: Thursday, 7 November 2013 10:51 AM Subject: RegionServer crash without any errors (compaction...
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   Author: Dhaval Shah, 2013-11-07, 15:59
[expand - 8 more] - RE: [HBase 0.92.1] Too many stores files to compact, compaction moving slowly - HBase - [mail # user]
...Hi Shrijeet Regarding your last question about the region growing bigger The following points could be one reason  When you said your compactions are slower and also you were trying...
... to split some very big store files, every split would have created some set of reference files. By the time as more writes are happening more store files are flushed.  In the compaction algo...
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   Author: Ramkrishna.S.Vasudevan, 2012-05-14, 04:29
[expand - 13 more] - Re: Additional disk space required for Hbase compactions.. - HBase - [mail # user]
...Thank you Jonathan for raising the Jira and attaching a patch  I was looking for more info on how major compactions and minor  compactions work and google found me this page:  http...
...://wiki.apache.org/hadoop/Hbase/HbaseArchitecture  After reading the wiki page and Google Bigtable paper, it seems to me  that there is a difference between Google 'minor compactions' andHbase  'minor compactions'.  In google, a minor compaction...
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   Author: TuX RaceR, 2010-05-18, 08:06
[expand - 8 more] - Re: Tables gets Major Compacted even if they haven't changed - HBase - [mail # user]
...Thanx for the discussion guys.  @Anil, we have turned off major compaction in the settings. This is a script which is run manually to make sure all tables get major compacted ever so often...
... to increase data locality. In our case, there is some collateral damage of compacting unchanged regions.  I was planning to rework the script to compact regions and not tables by querying how many...
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   Author: Premal Shah, 2013-09-10, 18:39
[expand - 5 more] - Re: RegionServer goes down in Compact SplitThread - HBase - [mail # user]
... will happen after a major compaction, but as per the logs, the compaction request comes after a split.  Regards, Skanda    On Thu, Aug 8, 2013 at 5:25 PM, Jean-Marc Spaggiari <[EMAIL PROTECTED]  ...
   Author: Prasad GS, 2013-08-08, 13:25
[expand - 9 more] - Re: How to prevent major compaction when doing bulk load provisioning? - HBase - [mail # user]
...On Fri, Mar 22, 2013 at 12:12 AM, Nicolas Seyvet  wrote:  If the compaction algo selects all the files for compaction, it gets upgraded into a major compaction because it's essentially...
   Author: Jean-Daniel Cryans, 2013-03-22, 16:32
Can't Major Compact, Compact, or Flush HBase Table - No Regions For My Table? - HBase - [mail # user]
..._INTERESTING_HGRAM                                                                                         1 row(s) in 0.0320 seconds hbase(main):008:0> major_compact 'SOME_INTERESTING_HGRAM' NativeException: java.io.IOException: java.io.IOException: java.lang.NullPointerException at org...
... to me not having any regions for my table even though I'm successfully inserting into it?  Thanks, David Swift   View this message in context: http://old.nabble.com/Can%27t-Major-Compact%2C-Compact...
   Author: David Swift, 2010-04-07, 19:12
[expand - 2 more] - HBase 0.92.1 - triggering major compaction - HBase - [mail # user]
...Hi,    I'm having following issues with triggering manually major compaction on selected regions via HBaseAdmin:  1. When I'm triggering major compaction on first region, which does...
... not contains key, it's running normally - I see message in logs ([..]Large Compaction requested ... Because: User-triggered major compaction;[...]) and after some time it's executed (info in logs...
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   Author: kzurek, 2013-01-30, 15:55
[expand - 1 more] - How to pick which region(s) to major compact? - HBase - [mail # user]
...Hi,  If you want to do major compaction on a single region at a time (to minimize the impact on the cluster), how do you pick which region to compact?  What should one look for in order...
... to get the best ROI out of major compaction - the best ratio of the negative impact and positive benefit - and is there a programmatic way to get to this information, so region selection+compaction...
   Author: Otis Gospodnetic, 2012-12-12, 20:19
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB