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Re: [ANNOUNCE] Sessions selected for HBaseCon 2013! 6/13/13 @ San Francisco Marriott Marquis - HBase - [mail # user]
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...Jon: bq. we'll also be hosting an HBase Hackathon [4] during they day of June 12th June 12th is approaching quickly. Can you give us some more information about the HBase Hackathon ? &...
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Author: Ted Yu,
2013-06-05, 18:10
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[HBASE-8681] TestDriver#testDriver fails on hadoop 2.0.x - HBase - [issue]
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...TestDriver#testDriver relies on System.exit() call from ProgramDriver#driver() because LauncherSecurityManager latches onto checkExit().In hadoop 2.0, ProgramDriver#driver() has the followin...
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http://issues.apache.org/jira/browse/HBASE-8681
Author: Ted Yu,
2013-06-05, 17:17
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Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
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...bq. the Regionserver and Tasktracker are the same node when you use MapReduce to scan the HBase table. The scan performed by the Tasktracker on that node would very likely access data ...
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Author: Ted Yu,
2013-06-05, 16:12
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Re: Writing to HBASE is taking a lot time as the table grows - HBase - [mail # user]
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...Can you go over http://hbase.apache.org/book.html#performance and then, http://hbase.apache.org/book.html#trouble Cheers On Wed, Jun 5, 2013 at 8:32 AM, Ramasubramanian wro...
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Author: Ted Yu,
2013-06-05, 16:02
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Re: Utility of client gateways vs client libraries connecting directly to region servers & zookeeper ? - HBase - [mail # user]
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...For thrift, there is already such support. Take a look at (0.94 codebase): src/main/java/org/apache/hadoop/hbase/regionserver/HRegionThriftServer.java * HRegionThriftServer - th...
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Author: Ted Yu,
2013-06-05, 14:21
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Re: Set column value for all rows - HBase - [mail # user]
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...Do you expect setting this same value in one transaction ? There is no such support yet. Cheers On Wed, Jun 5, 2013 at 6:18 AM, Bai Shen wrote: ...
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Author: Ted Yu,
2013-06-05, 13:53
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Re: HMaster and HRegionServer going down - HBase - [mail # user]
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...Have you looked at NameNode log ? The snippet you posted seems to imply issue with data block placement. Cheers On Jun 5, 2013, at 4:12 AM, Vimal Jain wrote: ...
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Author: Ted Yu,
2013-06-05, 11:30
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Re: HMaster and HRegionServer going down - HBase - [mail # user]
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...How many region servers / data nodes do you have ? What Hadoop / HBase version are you using ? Thanks On Jun 5, 2013, at 3:54 AM, Vimal Jain wrote: ...
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Author: Ted Yu,
2013-06-05, 11:08
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Re: HMaster and HRegionServer going down - HBase - [mail # user]
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...There are a few tips under : http://hbase.apache.org/book.html#trouble.rs.runtime.zkexpired Can you check ? Thanks On Jun 5, 2013, at 2:05 AM, Vimal Jain wrote: ...
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Author: Ted Yu,
2013-06-05, 10:49
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Re: Questions about HBase - HBase - [mail # user]
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...bq. But i am not very sure if we can control the files getting selected for compaction in the older verisons. Same mechanism is available in 0.94 Take a look at src/main/java/org...
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Author: Ted Yu,
2013-06-05, 04:29
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