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https://issues.apache.org/jira/browse/IGNITE-7219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated IGNITE-7219:
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Description:
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: [^ignitePojoFieldAccessorMemAlloc.png]
Suggestion: we can cache and reuse getReadMethod()/getWriteMethod() results as
a part of constructor logic of PojoFieldAccessor
was:
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
> 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: 2.1, 2.2, 2.3
> Reporter: Dmitry Konstantinov
> Attachments: ignitePojoFieldAccessorMemAlloc.png
>
>
> 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: [^ignitePojoFieldAccessorMemAlloc.png]
> Suggestion: we can cache and reuse getReadMethod()/getWriteMethod() results
> as a part of constructor logic of PojoFieldAccessor
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