HBase: Region server heap used memory usage?
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What's the usage of region server heap used memory ? I originally thought it's roughly the sum of current memstore + blockcache + storefileindex. But in our environment, I have configured max heap to 20g , heap used memory is sometimes up to 19g. At that moment, storefileindex was 8g, blockcache was 1g, memstore was 1g. What's the rest 9g memory ?
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Answer:
I think that the best explaination that you could find about this tricky topic is the blog post written by in Sematext: http://blog.sematext.com/2012/07/16/hbase-memstore-what-you-should-know/
Marcos Ortiz at Quora Visit the source
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