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From "Ray Liu (rayliu)" <ray...@cisco.com>
Subject Ignite SQL function questions
Date Wed, 11 Oct 2017 07:31:15 GMT
I've been reading Ignite official document and going through Ignite source code for a few while
now.

From the source code, I see that Ignite can be a key/value store and the data is stored in
a ConcurrentHashMap for every partition.
So, this is one copy of data in memory.

For Ignite SQL function, it seems like Ignite creates a H2 table in memory based on the fields
user want to be query with SQL.
So, does it mean for every key with @QuerySqlField annotation, there will be two copies of
data in memory (one in ConcurrentHashMap and one in in-memory H2 table)?


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