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Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
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...@Lars, how have your calculated the 35K/row size? I'm not able to find the same number. @Bryan, Matt's idea below is good. With the hadoop test you always had data locality. Which your...
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Author: Jean-Marc Spaggiari,
2013-05-01, 10:56
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Corrupted log file - HBase - [mail # dev]
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...When a log file (into /hbase/.logs) is corrupted, HBase is not able to start because it tries to read it again and again. Also, there is nothing into HBCK to detect that. Should ...
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Author: Jean-Marc Spaggiari,
2013-04-30, 18:51
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Re: Re: While starting 3-nodes cluster hbase: WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server null - HBase - [mail # user]
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...Hi John, Thanks for sharing that. Might help other people who are facing the same issues. JM 2013/4/30 John Foxinhead ...
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Author: Jean-Marc Spaggiari,
2013-04-30, 16:38
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Re: Corrupt files - HBase - [mail # user]
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...Bonjour Loïc, I don't thnk you can restore those blocks. If you have only one datanode and it doesn't have the missing blocks, there is no-where for hadoop to get those blocks back. So...
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Author: Jean-Marc Spaggiari,
2013-04-30, 12:40
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Re: HBase is not running. - HBase - [mail # user]
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...Hi Yves, Your host file looks good. Don't even try the shell until you get the UI displayed correctly and the server logs saying that initialization is done. So what do you...
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Author: Jean-Marc Spaggiari,
2013-04-30, 11:50
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Re: Corrupt files - HBase - [mail # user]
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...Hi Loïc, How many datanodes do you have on your cluster? Your replication factor is set to 3 so I think you should have at least 3 datanodes? Is one of those nodes down? There is...
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Author: Jean-Marc Spaggiari,
2013-04-30, 11:34
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Re: Read access pattern - HBase - [mail # user]
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...HBASE-4811 is what you should be looking for, but it's not even close to be implemented yet... One option will be to have 2 tables, each in a reserved order. So scanning forward in eac...
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Author: Jean-Marc Spaggiari,
2013-04-29, 18:04
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Re: Read access pattern - HBase - [mail # user]
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...Hum. For the next key, I think you can simply use your current key as your scanner first key. You will then find the one which is just after. Then you will have to verify the MD5 hash ...
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Author: Jean-Marc Spaggiari,
2013-04-29, 16:17
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Re: checkAnd... - HBase - [mail # user]
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...Hi Ted, Will it be a good idea to add it? Should we open a JIRA and implement checkANDIncrement? Might be pretty simple. JM 2013/4/27 Ted Yu :...
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Author: Jean-Marc Spaggiari,
2013-04-27, 13:46
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Re: HBase is not running. - HBase - [mail # user]
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...Hi Yves, You need to add an entry with your host name and your local IP. As an example, here is mine: 127.0.0.1 localhost 192.168.23.2 buldo My h...
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Author: Jean-Marc Spaggiari,
2013-04-26, 11:12
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