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From "aaron@tophold.com" <aa...@tophold.com>
Subject Some questions regard Cache Query and performance
Date Fri, 13 Oct 2017 12:45:13 GMT
hi All, 

Regards ContinuousQuery, I notice there is a #setLocal  will this meaning CQ only query against
local cache?  while this query only have #setRemoteFilterFactory method. 

So the question is will my CQ's local listener only receive event updates from local cache
or entire cluster?

Also the SqlFieldsQuery, we use this to batch update entries in cache, the frequent may be
once several seconds. 

The entry may be updated real time, sometime the data may inconsistent seem, will there any
lock/transaction control of this?

We use the JDBC as back-end storage;  and notice if we run the instance for several days,
the memory usage keep increase, the performance downgrade very badly, 

And eventually can not be used, from log we receive the ignite node stop event, but the memory
not be reclaimed until we kill the JVM finally. 

Our cache defined as:

<property name="cacheMode" value="PARTITIONED"/>
<property name="atomicityMode" value="ATOMIC"/>
<property name="readFromBackup" value="true"/>
<property name="backups" value="1"/>

<property name="readThrough" value="true"/>
<property name="writeThrough" value="true"/>
<property name="writeBehindEnabled" value="true"/>
<property name="writeBehindBatchSize" value="1024"/>
<property name="writeBehindFlushThreadCount" value="1"/>

<property name="storeKeepBinary" value="false"/>
<property name="onheapCacheEnabled" value="true"/>
<property name="memoryPolicyName" value="Asset_Region"/>

<property name="evictionPolicy">
    <bean class="org.apache.ignite.cache.eviction.lru.LruEvictionPolicy">
        <property name="maxSize" value="#{50000}"/>

<property name="nearConfiguration">
    <bean class="org.apache.ignite.configuration.NearCacheConfiguration">
        <property name="nearEvictionPolicy">
            <bean class="org.apache.ignite.cache.eviction.lru.LruEvictionPolicy">
                <property name="maxSize" value="3000"/>
        <property name="nearStartSize" value="500"/>

<property name="cacheStoreFactory" ref="storeagefactory"/>
<bean class="org.apache.ignite.configuration.MemoryPolicyConfiguration">
    <property name="name" value="Asset_Region"/>
    <property name="initialSize" value="#{2L * 1024L * 1024L * 1024L}"/>
    <property name="maxSize" value="#{2L * 1024L * 1024L * 1024L}"/>
    <property name="pageEvictionMode" value="RANDOM_2_LRU"/>

Thanks for your time!


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