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Re: Use of MD5 as row keys - is this safe? - HBase - [mail # user]
...Ethan,  Its not a question of collision attacks, although that is an indication  of the strength of the hash.   Just because both MD5 and SHA-1 yield a key of the same length,...
   Author: Michael Segel, 2012-07-23, 11:55
Re: How to merge regions in HBase? - HBase - [mail # user]
...Find a different row key?   The problem with merging regions is that once you merge the regions, any  net new regions will still have the same problem. So you'll have to  merg...
   Author: Michael Segel, 2012-07-17, 23:15
[expand - 1 more] - Re: Maximum number of tables ? - HBase - [mail # user]
...I'm going from memory. There was a hardcoded number. I'd have to go back  and try to find it.   From a practical standpoint, going over 1000 regions per RS will put  you on th...
   Author: Michael Segel, 2012-07-13, 17:40
Re: Embedded table data model - HBase - [mail # user]
...First,  A caveat... Schema design in HBase is one of the hardest things to  teach/learn because its so open. There is more than one correct answer  when it comes to creating a...
   Author: Michael Segel, 2012-07-13, 14:55
Re: DataNode Hardware - HBase - [mail # user]
...Uhm... I'd take a step back...  this CPU bound; plus my naive assumption was that four spindles will  have a hard time supplying data to MR fast enough for it to become  bogge...
   Author: Michael Segel, 2012-07-12, 23:22
[expand - 2 more] - Re: Improvement: Provide better feedback on Put to unknown CF - HBase - [mail # user]
...Nobody is arguing that the exception message doesn't make sense. +1 to  making better error messages.  What I am suggesting is to take advantage of HBase's meta data. That is, &nbs...
   Author: Michael Segel, 2012-07-10, 22:15
[expand - 2 more] - Re: Mixing Puts and Deletes in a single RPC - HBase - [mail # user]
...Regardless,  Its still a bad design.  On Jul 9, 2012, at 10:02 PM, Jonathan Hsieh wrote:  ...
   Author: Michael Segel, 2012-07-10, 11:57
Re: Presplit regions when creating a table - HBase - [mail # user]
...No, you need to know your key ranges for each split. If you don't and  you guess wrong, you may end up not seeing any benefits because your  data may still end up going to a single...
   Author: Michael Segel, 2012-07-05, 14:28
[expand - 1 more] - Re: Advices for HTable schema - HBase - [mail # user]
...Comparisons are fine.   Try to not think of this in terms of rows and columns, but in terms of  records. Think of each record as being atomic.   Create a list of all of the co...
   Author: Michael Segel, 2012-07-03, 14:03
Re: Connection error while usinh HBase client API for pseudodistrbuted mode - HBase - [mail # user]
...What's the status of Hadoop and IPV6 vs IPV4?   On Jul 3, 2012, at 7:07 AM, AnandaVelMurugan Chandra Mohan wrote:  ...
   Author: Michael Segel, 2012-07-03, 12:11
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