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[expand - 8 more] - Why is this region compacting? - HBase - [mail # user]
...I have a region that is very small, only 5MB. Despite it's size, it has 24 store files. The logs show that it's compacting (over and over again).  The odd thing is that even though...
... there are 24 store files, it only does one at a time. Even more strange is that my logs are filling up with compacting this one region. In the last 10 hours, there have been 1,876,200 log entries...
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   Author: Tom Brown, 2013-09-24, 15:50
[expand - 4 more] - Too many "Compaction Complete" messages - HBase - [mail # user]
... 2GB to 4GB, to avoid increasing the region count.  There were no reported problems or errors when I started back up, but ever since then I have had hundreds of "Compacting d in {sometable...
...}...... Compaction Complete" messages filling up my region server task status. It has been doing this with no appreciable change in pace for 5 days now.  When I look at the regionserver web UI, I see...
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   Author: Tom Brown, 2013-09-04, 02:13
[expand - 1 more] - 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: Eliminating duplicate values - HBase - [mail # user]
...If you're doing comparisons to remove duplicates, I'm not sure if you'd get any benefit to doing the de-duplication at compaction time.   If you de-duplicate at write time, the same number...
...), but also the size of data to compact will be smaller.  Just my $0.02...   On Sunday, March 3, 2013, Anoop John wrote:  ...
   Author: Tom Brown, 2013-03-03, 15:48
Re: Tracking down coprocessor pauses - HBase - [mail # user]
... moments to return, but doesn't return until 10:44:52.  At 10:18:53 there appear to be some compaction related messages (though they didn't appear to be the cause, happening over a minute after...
... the server stops functioning).  It appears to run compaction until 10:42:25. The next two minutes contain just LRU eviction messages.  At 10:44:52, the query from earlier appears to complete, after...
   Author: Tom Brown, 2012-09-12, 17:40
[expand - 1 more] - Re: MemStore and prefix encoding - HBase - [mail # user]
... don't, leading to very many small store files that need to be compacted). timestamp (if you write multiple with the same timestamp it is undefined which one you'll get back when you read...
   Author: Tom Brown, 2012-08-25, 23:54
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