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HBase compaction question - HBase - [mail # user]
... TTL to 33 days so total amount of data stored for that table is 33 * 40 * 24 = ~31T, assuming major compaction works properly. Another indication of this process is every our, each region...
... will have its HFile count increased by 1.     * We have automatic major compaction disabled as suggested.     * There is an hourly job A that read from HBase and it takes about 30 minutes, so we can...
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   Author: Chen Song, 2014-02-21, 16:56
Will compaction block memstore flush to disk - HBase - [mail # user]
...Hi ,   Will compaction(minor or major) block memstore flush to disk(or HDFS)? That's, when region server is doing compaction,  is it allowed to flush memstore to HDFS?  Let's base...
... the answer in HBase 0.94. Here are some info I dig out, but I'm not sure of the anwser: hbase.hstore.compactionThreshold:(0.89)     If more than this number of HStoreFiles in any one HStore (one...
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   Author: vito, 2014-07-14, 03:57
Re: Disable major compaction - HBase - [mail # user]
...Moving the question to user mailing list. Hi Yaniv, Even with this setting, you might still have some major compactions if all the stores are selected for a compaction. Any specific...
   Author: Jean-Marc Spaggiari, 2014-02-12, 14:14
Re: Disabled automated compaction - table still compacting - HBase - [mail # user]
...Hi David,  Minor compactions can be promoted to Major compactions when all the files are selected for compaction. And the property below will not avoid that to occur.  Section there...
   Author: Jean-Marc Spaggiari, 2013-07-09, 14:41
HBase (Compaction and Region) Event Listeners - HBase - [mail # user]
... that would allow one to listen for thing like compactions.... or any other important HBase events? Thanks, Otis Performance Monitoring * Log Analytics * Search Analytics Solr & Elasticsearch Support...
   Author: Otis Gospodnetic, 2014-05-29, 03:40
Re: Why is this region compacting? - HBase - [mail # user]
...Can you past logs a bit before that? To see if anything triggered the compaction? Before the 1M compactions entries.  Also, what is your setup? Are you running in Standalone? Pseudo...
   Author: Jean-Marc Spaggiari, 2013-09-24, 16:13
Manage Major Compaction. - HBase - [mail # user]
...Hello,  The hbase book at apache website has the following statement about controlling major compaction: "A common administrative technique is to manage major compactions manually, rather...
... than letting HBase do it. By default,HConstants.MAJOR_COMPACTION_PERIOD is one day and major compactions may kick in when you least desire it - especially on a busy system. To turn off...
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   Author: Jason Huang, 2013-09-20, 20:06
Re: Check if a region is compacting or not - HBase - [mail # user]
...Search the reagion name in regionserver logs, if there are starting compaction messages but no matched finishing messages, the region is compacting.      Frank Chow  From: Sandeep L Date...
...: 2013-09-04 13:32 To: [EMAIL PROTECTED] Subject: Check if a region is compacting or not Hi, I would like to check if a region is compacting or not. Can some please let me know how check this...
   Author: Frank Chow, 2013-09-04, 12:26
Compaction throttling and per-region compaction automation - HBase - [mail # user]
...Hi,  Major compactions are..... you know... :) So I saw there is https://issues.apache.org/jira/browse/HBASE-3743 for throttling them.  We are about to try the per-region compaction, so I...
   Author: Otis Gospodnetic, 2012-11-06, 18:38
Reducing compaction queue more efficiently - HBase - [mail # user]
... entries in my compaction queue (~ 200 per regionserver). Unfortunately, HBase now is slow when pushing new data into it and it just compacts with 0.02 per second (getting also "WARN org...
....apache.hadoop.ipc.HBaseServer: (operationTooSlow)" in log files). If I want to trigger the compaction manually, there's nothing happening: hbase(main):001:0> compact 'images' 0 row(s) in 1.3690 seconds hbase(main):002:0> major_compact...
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   Author: Sven Herzky, 2014-03-27, 11:37
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