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Re: Confusion with Actual Number of Regions in HBase - HBase - [mail # dev]
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...Thanks all. Actually the problem happened due to accidentally remove some security policy which defines the ports to communicate between the servers and required by ZK to detect region serve...
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Author: Joarder KAMAL,
2013-02-21, 05:46
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Re: Confusion with Actual Number of Regions in HBase - HBase - [mail # dev]
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...Hi Ted, After login into the HBase UI I found two of my region servers were dead. Don't have any clue why. Master is still up and running for the past 4 days. Memory is still running p...
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Author: Joarder KAMAL,
2013-02-21, 01:39
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Re: Confusion with Actual Number of Regions in HBase - HBase - [mail # dev]
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...Sorry may be I didn't clarify the question properly. Q2. As per the default setting maxHeapMB size is 991, so in saturation condition HBase can't use more RAM (even if it is available,...
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Author: Joarder KAMAL,
2013-02-20, 23:56
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Re: Confusion with Actual Number of Regions in HBase - HBase - [mail # user]
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...Hi Ted, Thanks for the reply. Q1. Cleared now. Sorry I didn't count the -ROOT- and .META. tables Q2. Not clear. Could explain a bit more? I am using the default setting. Th...
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Author: Joarder KAMAL,
2013-02-20, 23:42
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Confusion with Actual Number of Regions in HBase - HBase - [mail # dev]
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...Dear All, I am currently running a 3 node HBase cluster with Amazon EC2 small instance (1CPU, 1.7GB Mem). After running a simple workload (type A) using YCSB benchmarking tool, I notic...
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Author: Joarder KAMAL,
2013-02-20, 23:26
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Re: availability of 0.94.4 and 0.94.5 in maven repo? - HBase - [mail # user]
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...I also came up with the same issue 1 day ago while building YCSB HBase client for HBase 0.94.5. Later I used the 0.94.3 version to carry out my work for the time being. Regards, Joarde...
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Author: Joarder KAMAL,
2013-02-20, 01:37
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Re: HBase Region/Table Hotspotting - HBase - [mail # user]
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...Thanks Lars for explaining the reasons for hotspotting and key design techniques. Just wondering, is it possible to alter key design (e.g. from sequential keys to salt keys) at run time in t...
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Author: Joarder KAMAL,
2013-02-11, 05:56
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Re: HBase Region/Table Hotspotting - HBase - [mail # user]
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...Hi Kevin, Thanks a lot for your great answers. Regarding Q5. To clarify, lets say Facebook is using HBase for the integrated messaging/chat/email system in a very large-scale set...
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Author: Joarder KAMAL,
2013-02-11, 03:43
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HBase Region/Table Hotspotting - HBase - [mail # user]
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...This is my first email in the group. I am having a more general and open-ended question but hope to get some reasoning from the HBase user communities. I am a very basic HBase user and still...
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Author: Joarder KAMAL,
2013-02-11, 02:17
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