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Re: HBase coprocessor callback for comet - HBase - [mail # user]
...I'd say add some sort of durable queue to receive the alert if you don't want to miss a message.   Essentially use a region server observer and write the alert to your favorite pub/sub ...
   Author: Michael Segel, 2013-02-06, 12:39
Re: cluster monitoring - HBase - [mail # user]
...Sounds like you're looking to see what rows are being selected within a region.   In theory you could do this w coprocessors, but I wouldn't recommend it.  You're going to take a h...
   Author: Michael Segel, 2013-02-05, 14:16
Re: Custom Filter and SEEK_NEXT_USING_HINT issue - HBase - [mail # user]
...If its the same class and its not a patch, then the first class loaded wins.   So if you have a Class Foo and HBase has a Class Foo, your code will never see the light of day.  Per...
   Author: Michael Segel, 2013-01-21, 00:22
Re: Loading data, hbase slower than Hive? - HBase - [mail # user]
...The writes take longer in HBase.   Just how much longer may depend on how well you tuned HBase.   Now, having said that... suppose you want to find a single record in either HBase ...
   Author: Michael Segel, 2013-01-17, 16:48
Re: Hbase as mongodb - HBase - [mail # user]
...The interface to pull JSON objects out of HBase will not be the same as Mongo DB.   Meaning that you can store JSON objects in HBase. ( See Avro, or Wibidata's Kiji for example)  B...
   Author: Michael Segel, 2013-01-17, 15:25
Re: Storing images in Hbase - HBase - [mail # user]
...That's a viable option.  HDFS reads are faster than HBase, but it would require first hitting the index in HBase which points to the file and then fetching the file.  It could be f...
   Author: Michael Segel, 2013-01-11, 15:00
[expand - 3 more] - Re: HBase - Secondary Index - HBase - [mail # user]
...So if you're using an inverted table / index why on earth are you doing it at the region level?   I've tried to explain this to others over 6 months ago and its not really a good idea. ...
   Author: Michael Segel, 2013-01-08, 14:33
Re: One weird problem of my MR job upon hbase table. - HBase - [mail # user]
...Where did he mention he was attempting to bond the ports?  Sorry if I missed it?  On Jan 7, 2013, at 7:37 AM, Doug Meil  wrote:  ...
   Author: Michael Segel, 2013-01-07, 16:59
Re: Hbase scalability performance - HBase - [mail # user]
...I thought it was Doug Miel who said that HBase doesn't start to shine until you had at least 5 nodes.  (Apologies if I misspelled Doug's name.)   I happen to concur and if you want...
   Author: Michael Segel, 2012-12-22, 16:23
[expand - 9 more] - Re: Is it necessary to set MD5 on rowkey? - HBase - [mail # user]
...Nick,  Yes there is an implied definition of  the term 'salting' which to those with a CS or Software Engineering background will take to heart. However it goes beyond this definit...
   Author: Michael Segel, 2012-12-20, 20:15
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