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Re: Region in Transition - HBase - [mail # user]
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...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...
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Author: Bryan Beaudreault,
2012-10-15, 14:51
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...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...
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Author: Bryan Beaudreault,
2012-10-12, 19:46
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Re: Force the number of map tasks in MR? - HBase - [mail # user]
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...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...
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Author: Bryan Beaudreault,
2012-10-12, 01:10
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Re: multitable query - HBase - [mail # user]
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...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 ...
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Author: Bryan Beaudreault,
2012-08-10, 13:50
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Re: consistency, availability and partition pattern of HBase - HBase - [mail # user]
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...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...
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Author: Bryan Beaudreault,
2012-08-09, 03:09
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Re: HBase won't run on OSX 10.8 - HBase - [mail # user]
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...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,...
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Author: Bryan Beaudreault,
2012-08-08, 19:47
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Re: Presplitting regions + Bulk import data into table - HBase - [mail # user]
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...Change the output of your job (or whatever you are using to seed this reducer -- mapper, whatever), to output ImmutableBytesWritable as the key. Then wrap your bytes in the writable. &...
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Author: Bryan Beaudreault,
2012-07-25, 01:55
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Smart Managed Major Compactions - HBase - [mail # user]
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...Hello all, Before I start, I'm running cdh3u2, so 0.90.4. I am looking into managing major compactions ourselves, but there doesn't appear to be any mechanisms I can hook in to ...
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Author: Bryan Beaudreault,
2012-07-18, 17:26
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Re: How to merge regions in HBase? - HBase - [mail # user]
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...Shouldn't it be possible for him to have empty regions if he has a TTL on his data? Bryan Beaudreault On Wednesday, July 18, 2012 at 9:58 AM, Kevin O'dell wrote: ...
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Author: Bryan Beaudreault,
2012-07-18, 14:32
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Re: Lowering HDFS socket timeouts - HBase - [mail # user]
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...Thanks for the response, N. I could be wrong here, but since this problem is in the HDFS client code, couldn't I set this dfs.socket.timeout in my hbase-site.xml and it would only affe...
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Author: Bryan Beaudreault,
2012-07-18, 14:28
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