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Showing posts with label jmx. Show all posts

Sunday, June 19, 2016

Investigating into apache cassandra 1.2 jmx metrics connection type warn logging

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Recently I got the opportunity to upgrade a production cassandra cluster from 1.1.12 to 1.2.19 and during the midst of upgrading, I notice...

Friday, January 16, 2015

operate casandra using jmx in terminal including changing pool size, compacting sstables and key cache

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If you operate apache cassandra cluster and if load per node goes huge (like nodetool info show 800GB) , compactions become a problem. It...

Sunday, April 13, 2014

Research into cassandra nodetool cfhistograms and interpret statistics

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What is nodetool cfhistogram ? According to the official documentation definition : The nodetool cfhistograms command provides statistics a...

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Saturday, April 12, 2014

Investigate into cassandra 1.0.8 compaction

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So what happened what you trigger compact via nodetool? In a nutshell, it goes into a series of low levels java calls. The execution started...

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