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Thursday, March 29, 2012

Cassandra Opscenter, No data collected

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you might get this, the ring is correct, no data get collected from agent, If you check log /var/log/opscenterd.log ...

DataStax DSE 2.0, Hadoop/Hive quick tutorial - 2

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Hive is used as a batch approach, once we get the analysis result, we need put it into a store which is available for real-time access, for ...
Wednesday, March 28, 2012

DataStax DSE 2.0, Hadoop/Hive quick tutorial - 1

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Just setup 8 VMS, and load it with the DSE 2.0, one new feature of the DSE 2.0 is the SOLR support. Now, when I run the node tool, you will ...
Thursday, March 22, 2012

Apache Solr and SolrNet quickstart, using the Netflix Dataset (Odata format)

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Here is one quick tutorial to Send some movie data (netflix oData format) to solr for indexing, and do some basic querying. Sample Da...
Tuesday, March 20, 2012

Jquery error, Uncaught ReferenceError: class2type is not defined

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This is an entry-level error you might get when you try put Jquery into you web. if you use chrome. the error looks like this in the console...
Wednesday, February 29, 2012

Crystal report, A generic error occurred in GDI+

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one day, some app server has the error to render the asp.net Crystal report. It’s a server side problem, So run a debug and attach to the se...
Monday, February 27, 2012

Cordbg for .net 4.0

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I have been using the Cordbg for a while, it works pretty great. just zip those 2 files and drop it to the server, you can do the production...