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Re: 答复:  答复: what is the max size for one region and what is the max size of region for one server - HBase - [mail # user]
...0.90.x supports up to 4GB region sizes max, not 40. You would need to upgrade to 0.92.x at least to go higher than that.   Sent from iPhone.  On Dec 17, 2012, at 9:31 AM, Doug Meil...
   Author: Bryan Beaudreault, 2012-12-17, 14:39
Re: How to pick which region(s) to major compact? - HBase - [mail # user]
...I've looked into this in the past, and I haven't implemented anything yet.  But I have a couple notes:  1) From what I can tell hbase doesn't currently provide you with an API you ...
   Author: Bryan Beaudreault, 2012-12-12, 23:46
[expand - 2 more] - Re: Bulk loading (and/or major compaction) causing OOM - HBase - [mail # user]
...Merging is not an option for us, because we cannot afford to bring our cluster down.  Also, we are not yet convinced that our cluster can handle such large regions due to all the OOM is...
   Author: Bryan Beaudreault, 2012-12-08, 21:08
[expand - 1 more] - Re: Scan exception when running MR - HBase - [mail # user]
...Oh, sorry.  This sounds like a version mismatch.  Do you have the same version installed on your servers and being pulled in your hadoop job?  On Mon, Oct 22, 2012 at 12:32 PM...
   Author: Bryan Beaudreault, 2012-10-22, 17:13
Re: Region in Transition - HBase - [mail # user]
...In the past when I have seen regions get locked in transition it is usually a problem with the HMaster.  Seemingly a transition starts and succeeds between region servers, but the HMast...
   Author: Bryan Beaudreault, 2012-10-15, 14:51
Re: more regionservers does not improve performance - HBase - [mail # user]
...I recommend turning on debug logging on your region servers.  You may need to tune down certain packages back to info, because there are a few spammy ones, but overall it helps.  Y...
   Author: Bryan Beaudreault, 2012-10-12, 19:46
Re: Force the number of map tasks in MR? - HBase - [mail # user]
...JM,  Are you trying to use HTableInputFormat to scan HBase from map reduce?  If so, there is a map task per region so you should have 25 regions.  If only 2 are running at onc...
   Author: Bryan Beaudreault, 2012-10-12, 01:10
Re: multitable query - HBase - [mail # user]
...Use 3 jobs: 1 to scan each table. The third could do a map-side join. Make s ure to use the same sort and partitions on the first two.  Sent from iPhone.  On Aug 10, 2012, at 9:41 ...
   Author: Bryan Beaudreault, 2012-08-10, 13:50
Re: consistency, availability and partition pattern of HBase - HBase - [mail # user]
...Actual data backing hbase is replicated, but that is handled by HDFS.  Yes, if you lose an hdfs datanode, clients (in this case the client is hbase) move to the next node in the pipelin...
   Author: Bryan Beaudreault, 2012-08-09, 03:09
Re: HBase won't run on OSX 10.8 - HBase - [mail # user]
...Did this fix end up working?  I'm hesitant to upgrade to 10.8 if I'm going to run into this issue.  I'm running the CDH3 jars locally to mirror my production cluster.  On Tue,...
   Author: Bryan Beaudreault, 2012-08-08, 19:47
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