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Re: Never ending transtionning regions. - HBase - [mail # user]
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...JM, Here is what I am seeing: 2013-02-23 15:46:14,630 ERROR org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Failed open of region=entry,ac.adanac-oidar.www...
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Author: Kevin O'dell,
2013-02-23, 23:21
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Re: Never ending transtionning regions. - HBase - [mail # user]
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...JM, How are you doing today? Right before the file does not exist should be another path. Can you let me know if in that path there are a pointers from a split to 2e...
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Author: Kevin O'dell,
2013-02-23, 21:16
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Re: How to Upgrade Hbase using Cloudera Manager? - HBase - [mail # user]
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...Vidosh, You should just be able to do a yum upgrade hbase on each node. Please make sure HBase is stopped first. On Sat, Feb 16, 2013 at 1:30 PM, Vidosh Sahu wrote: ...
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Author: Kevin O'dell,
2013-02-16, 19:01
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Re: HBase Region/Table Hotspotting - HBase - [mail # user]
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...Hi Joarder, Welcome to the HBase world. Let me take some time to address your questions the best I can: 1. How often you are facing Region or Table Hotspotting in H...
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Author: Kevin O'dell,
2013-02-11, 02:32
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Re: split table data into two or more tables - HBase - [mail # user]
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...Alex, Your best bet would be to do this through either MapReduce or Happybase(python). There is not an innate way to handle that through the shell. On Fri, Feb 8, 2013 at 1...
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Author: Kevin O'dell,
2013-02-08, 18:41
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Re: Acceptable CPU_WIO % ? - HBase - [mail # user]
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...JM, Basically, you will have to replace failed disk and rebuild RAID0 since the other half of the data is worthless. There is not a real recommended value, but anything un...
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Author: Kevin O'dell,
2013-02-08, 16:37
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Re: Acceptable CPU_WIO % ? - HBase - [mail # user]
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...Azuryy, The main reason to recommend against RAID is that it is slow and it adds redundancy that we already have in Hadoop. RAID0 is another story as long as all of the dr...
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Author: Kevin O'dell,
2013-02-08, 13:56
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Re: Acceptable CPU_WIO % ? - HBase - [mail # user]
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...JM, I think you misunderstood me. I am not advocating any form of RAID for Hadoop. It is true that we already have redundancy built in with HDFS. So unless you...
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Author: Kevin O'dell,
2013-02-08, 02:57
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Re: Acceptable CPU_WIO % ? - HBase - [mail # user]
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...JM, Okay, I think I see what was happening. You currently only have one drive in the system that is showing High I/O wait correct? You are looking at bringing in a s...
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Author: Kevin O'dell,
2013-02-08, 02:21
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Re: Acceptable CPU_WIO % ? - HBase - [mail # user]
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...Hey JM, Why RAID0? That has a lot of disadvantages to using a JBOD configuration? Wait I/O is a symptom, not a problem. Are you actually experiencing a problem...
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Author: Kevin O'dell,
2013-02-08, 01:43
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