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is there anyway to turn off compaction in hbase - HBase - [mail # user]
...I am using hbase 0.92.1 and want to disable compaction (both major and minor compactions) for a period of time. is that configurable in hbase? ...
   Author: Richard Tang, 2012-08-09, 10:43
Are minor compaction and major compaction different in HBase 0.92? - HBase - [mail # user]
...Hello,  My HBase version is 0.92.0. And I find that when I use minor compaction and major compaction to compact a table, there are no differences. In the minor compaction, it will remove...
... the deleted cells and discard the exceeding data versions which should be the task of major compaction. I wonder if these two compaction can do the same work, why do we need both?  I mean the minor...
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   Author: yonghu, 2012-04-26, 06:48
Optimizing writes/compactions/storefiles - HBase - [mail # user]
...Hi all,  We just spent some time figuring out how to get writes to work properly  in our cluster on cdh3, and I wrote it up in a blog post. Might be of  interest to some of yo...
   Author: Oliver Meyn, 2012-07-11, 09:18
When does compaction actually occur? - HBase - [mail # user]
... a compaction request via the web UI, but that didn't seem to do anything.  Am I misunderstanding the data model used by HBase?  Is there anything else I can check to verify the functionality of my...
   Author: Tom Brown, 2012-06-01, 22:59
Re: Major Compaction in 0.90.6 - HBase - [mail # user]
...Inline.  J-D   On Mon, Aug 19, 2013 at 2:48 AM, Monish r  wrote:   Yes, look at CompactSplitThread    It doesn't in 0.90.6 but CompactSplitThread lists those for 0.92+  hbase.regionserver.thread.compaction...
....large hbase.regionserver.thread.compaction.small    Determining if something is major-compacted is definitely not at the table-level.  In 0.90.6, MajorCompactionChecker will ask HRegion.isMajorCompaction...
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   Author: Jean-Daniel Cryans, 2013-08-19, 18:22
major compaction time constantly growing - HBase - [mail # user]
... has 2G ram     We have 4map/2reducer per machine  We write from m/r job to hbase (2 jobs a day).    1) We running major compaction manually once a day    2) We increases regions size...
... to prevent automatic split    3) We didn't use WAL (WAL is false).  We started running major compaction 3 month before on dayly basis. Major compaction execution time from the very begining was ~1...
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   Author: Oleg Ruchovets, 2011-09-21, 18:31
【region compaction check key-bound or not】 - HBase - [mail # user]
...Hi,all  If Region process splits, it will make a reference.After executing child region makes a compaction that absorbs all the reference. And I have a question that how to make differences...
... when executes scanner. As we know that Compaction uses the scanner as well, so whether to set the startKey and endKey of child region's bound, in order to guarantee that the storefile in child...
   Author: Bing Jiang, 2013-07-10, 11:25
Re: how can i do compaction manually? - HBase - [mail # user]
...major_compact command can also compact selected region.  Take a look at the sample at the beginning of: ./src/main/ruby/shell/commands/major_compact.rb  Cheers  On Mon, Jul 1, 2013 at 10...
   Author: Ted Yu, 2013-07-01, 03:00
Is there a way to increase the compaction queue size? - HBase - [mail # user]
...Hi, all, I have a hbase region server of 10 regions and find the compaction queue size is always 10 at maximum. After I finished inserting 1 billion records, there are still hundreds...
... of HFiles in each region and no further minor compaction is queuing.  My settings, hbase.hstore.blockingStoreFiles=Integer.MAX_VALUE hbase.hstore.compactionThreshold=3 hbase.hstore.max.filesize=100G...
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   Author: Sheng Chen, 2011-07-07, 05:55
Closed regions during major compact - HBase - [mail # user]
... a major compact of the table after this failure, the m ajor compact failed and throws a Region XXX not online.  But, we do not see any errors unless we attempt the major compact.   Anyone have...
   Author: highpointe, 2011-06-15, 19:59
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