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Re: hbase can't drop a table - HBase - [mail # user]
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...If you get in that situation again: 1.) Verify that you don't have any remnants of the tables in HDFS hadoop fs -ls /hbase/ 2.) If you do have any remnants an...
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Author: Kevin O'dell,
2012-10-16, 16:11
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Re: Merge large number of regions - HBase - [mail # user]
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...Shrijeet, I think a better approach would be a pre-split table and then do the export/import. This will save you from having to script the merges, which can be end badly for MET...
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Author: Kevin O'dell,
2012-10-16, 15:47
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Re: Region in Transition - HBase - [mail # user]
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...Lukas, I am not sure I understand what you are saying there. What I thought you did was: hadoop fs -mv /hbase /tmp/hbase.old Restart HBase You should now...
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Author: Kevin O'dell,
2012-10-15, 16:17
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Re: Region in Transition - HBase - [mail # user]
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...Lukas, A little trick you can use is to just copy the table directories into your new /hbase dir and then use: hbck -fixMeta -fixAssignments This will pull in the ta...
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Author: Kevin O'dell,
2012-10-15, 16:03
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Re: Region in Transition - HBase - [mail # user]
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...Lukas, Looking over what you sent me: ERROR: Region { meta => twitter_users,1ffd1a52913c3fd600dedb97d1b2b8ce,1350294703353.6e3be1c26233ed 744479289b00a422dd., hdfs =>...
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Author: Kevin O'dell,
2012-10-15, 15:39
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Re: Region in Transition - HBase - [mail # user]
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...Lukas, Sure, how long has it been since the restart? You will need to give the regions time to transition and logs time to split. Did the region in transition proper...
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Author: Kevin O'dell,
2012-10-15, 14:28
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Re: Region in Transition - HBase - [mail # user]
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...Have you tried clearing out your Znode information? Typically, when I have encountered a RIT, we will bring down HBase and go to the ZKcli and clear out /hbase. What do you see i...
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Author: Kevin O'dell,
2012-10-15, 13:47
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Re: more regionservers does not improve performance - HBase - [mail # user]
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...Jonathan, Lets take a deeper look here. What is your memstore set at for the table/CF in question? Lets compare that value with the flush size you are seeing for you...
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Author: Kevin O'dell,
2012-10-12, 13:44
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Re: Force the number of map tasks in MR? - HBase - [mail # user]
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...Lets combine this with JD's request and work off of that thread. Can we work off of that thread and follow up with LocalJobRunner question? On Thu, Oct 11, 2012 at 4:44 PM, Jean-...
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Author: Kevin O'dell,
2012-10-11, 20:48
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Re: Force the number of map tasks in MR? - HBase - [mail # user]
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...J-M, It should be in the mapred-site.xml the values are mapred.tasktracker.map.tasks.maximum and mapred.tasktracker.reduce.tasks.maximum. This is the default in CDH4 ...
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Author: Kevin O'dell,
2012-10-11, 20:36
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