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[expand - 4 more] - Re: Nested data structures examples for HBase - HBase - [mail # user]
...@Wilm, Let me put it a different way… Think of a sales invoice. You can have columns for invoice_id, customer_id, customer_name, customer_billing_address (Nested structure), customer_contact...
   Author: Michael Segel, 2014-09-12, 07:23
[expand - 2 more] - Re: One-table w/ multi-CF or multi-table w/ one-CF? - HBase - [mail # user]
...Locality? Then the data should be in the same column family.  That’s as local as you can get. I would suggest that you think of the following:What’s the predominant use case? How are yo...
   Author: Michael Segel, 2014-09-09, 21:02
[expand - 1 more] - Re: HBase - Performance issue - HBase - [mail # user]
...So you have large RS and you have large regions. Your regions are huge relative to your RS memory heap. (Not ideal.) You have slow drives (5400rpm) and you have 1GbE network. Do didn’t say h...
   Author: Michael Segel, 2014-09-09, 20:45
[expand - 3 more] - Re: Silly question... Coprocessor writes to ZK? - HBase - [mail # user]
...@RyanHmmm. Interesting. Lets take a step back for a second.Which do you prefer: A push model or a pull/poll  model?That would kind of dictate the decisions you would make in terms of de...
   Author: Michael Segel, 2014-09-05, 19:56
Re: Question on the number of column families - HBase - [mail # user]
...I think you need to go back a bit further from the problem and ask yourself when would you want to have the same row key used for disjoint data. That is data that refers to the same object, ...
   Author: Michael Segel, 2014-08-05, 21:55
Re: why not introduce reverse index into hbase for multi-dimensional query - HBase - [mail # user]
...See:http://www.infoq.com/articles/LuceneHbaseNote: We did this early in 2011 but couldn’t talk about it for a while. SOLR / Elastic Search would follow the same pattern. Note that depending ...
   Author: Michael Segel, 2014-07-18, 07:41
Re: Does compression ever improve performance? - HBase - [mail # user]
...That works since you don’t need a region to be splittable… On Jun 14, 2014, at 4:36 PM, Kevin O'dell  wrote: ...
   Author: Michael Segel, 2014-06-16, 21:31
[expand - 4 more] - Re: Timestamp resolution - HBase - [mail # dev]
...Even then you need to sync the clocks. And that’s a trick in itself unless you have a way to jury rig a GPS and radio antenna to the nodes in the data center. ;-) On Jun 16, 2014, at 8:19 PM...
   Author: Michael Segel, 2014-06-16, 21:30
[expand - 1 more] - Re: White papers/Solution implemented to use HIVE/HBASE as OLTP - HBase - [mail # user]
...So how do you handle isolation? Dirty reads? The point is that you can have scenarios where data exists yet is missing from other queries. On Jun 11, 2014, at 4:27 AM, Tapper, Gunnar  w...
   Author: Michael Segel, 2014-06-11, 21:08
[expand - 1 more] - Re: How to make HBase survive a laptop standby - HBase - [mail # dev]
...St.Ack,"I just realized that, for years, I've been countlessly restarted hbase every time my laptop gets out of standby.I know well why I do this, but I also know I could probably not do it ...
   Author: Michael Segel, 2014-06-06, 21:20
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB