Dmitry Konstantinov created IGNITE-7219:
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Summary: Reduce memory allocation in
cassandra.persistence.PojoFieldAccessor
Key: IGNITE-7219
URL: https://issues.apache.org/jira/browse/IGNITE-7219
Project: Ignite
Issue Type: Improvement
Components: cassandra
Affects Versions: 2.3, 2.2, 2.1
Reporter: Dmitry Konstantinov
As a part of store logic of CassandraCacheStore if strategy="POJO" is used to
store a value entity -
org.apache.ignite.cache.store.cassandra.persistence.PojoFieldAccessor is used
to work with POJO properties. Within the methods getValue/setValue
getReadMethod()/getWriteMethod() are invoked each time. As a part of the
methods invocation sun.reflect.misc.ReflectUtil#isNonPublicProxyClass is
triggered which works with class names as strings and allocates a memory. It is
a small allocation by itself but it is triggered very frequently - for each
field for each entity per each DB operation - so in summary it create a
significant pressure. See attach:
Suggestion: we can cache and reuse getReadMethod()/getWriteMethod() results as
a part of constructor logic of PojoFieldAccessor
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