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0 pointstkahnoski8y ago0 comments

If so any JVM based datastore could probably benefit.

I wonder how long before we see a similar result from ElasticSearch. (Only other huge JVM based store I can think of).

0 comments

Hbase is going offheap as much as possible. Voltdb uses java for management and c++ for low-level.

They will write c++ in java eventually. Depending on how much performance you REALLY need.

The same for elasticseach, if you want performance you need to do the same thing scylladb did to cassandra (per-core-sharding, skip filesystem across cores etc)

ddorian438y ago

In elasticsearcch terms, vespa.ai, which claims better performance/scalability/maintanability uses c++ for lucene layer and java for the solr/elasticsearch layer.

There are blog posts speeding lucene by 2x+ by changing some stuff to c/c++. There are libraries (trinity) claiming 2x+ performance .

There is google-engineer saying "bigtable is 3x faster than hbase" that I've read.

itronitron8y ago

People with an interest may want to check out Azul's Zing JVM and the following blog post testing it out with Lucene... http://blog.mikemccandless.com/2012/07/lucene-index-in-ram-w...

j / k navigate · click thread line to collapse

0 comments

ddorian438y ago

Hbase is going offheap as much as possible. Voltdb uses java for management and c++ for low-level.

They will write c++ in java eventually. Depending on how much performance you REALLY need.

The same for elasticseach, if you want performance you need to do the same thing scylladb did to cassandra (per-core-sharding, skip filesystem across cores etc)

ddorian438y ago

In elasticsearcch terms, vespa.ai, which claims better performance/scalability/maintanability uses c++ for lucene layer and java for the solr/elasticsearch layer.

There are blog posts speeding lucene by 2x+ by changing some stuff to c/c++. There are libraries (trinity) claiming 2x+ performance .

There is google-engineer saying "bigtable is 3x faster than hbase" that I've read.

itronitron8y ago

People with an interest may want to check out Azul's Zing JVM and the following blog post testing it out with Lucene... http://blog.mikemccandless.com/2012/07/lucene-index-in-ram-w...

j / k navigate · click thread line to collapse