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Thread: Difference between compass.engine.mergeFactor and compass.engine.optimizer.

This question is answered. Helpful answers available: 1. Correct answers available: 1.


Permlink Replies: 20 - Pages: 2 [ 1 2 | Next ] - Last Post: Dec 3, 2011 4:29 AM Last Post By: woolrich
Shanmugam

Posts: 9
Registered: 4/26/07
Difference between compass.engine.mergeFactor and compass.engine.optimizer.
Posted: May 17, 2007 9:05 AM
 
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Q1. what is the Difference between compass.engine.mergeFactor and compass.engine.optimizer.

Q2. I am using GPS JDBC (DB-Oracle) for indexing. My table contains 1 billion row & 10 column. Java Heap Memory= 1GB. and also i am using below compass setting
<prop key="compass.engine.connection">${sisearch.root}/sisearch</prop>
<prop key="compass.cache.first">org.compass.core.cache.first.NullFirstLevelCache</prop>
<prop key="compass.transaction.lockDir">${sisearch.root}/sisearch/lock</prop>
<prop key="compass.engine.optimizer.schedule">false</prop>
<prop key="compass.engine.indexManagerScheduleInterval">-1</prop>
<prop key="compass.engine.cacheIntervalInvalidation">0</prop>
<prop key="compass.engine.waitForCacheInvalidationOnIndexOperation">true</prop>

<property name="mirrorDataChanges"><value>true</value></property>

Please advise me to set up best configuration values.

and also tell me the best merge factor value for my settings.

Thanks

Shay Banon

Posts: 4,028
Registered: 9/6/05
Re: Difference between compass.engine.mergeFactor and compass.engine.optimizer.
Posted: May 18, 2007 12:55 AM   in response to: Shanmugam in response to: Shanmugam
Helpful
  Click to reply to this thread Reply
Q1. what is the Difference between
compass.engine.mergeFactor and
compass.engine.optimizer.

I assume you meant compass.engine.optimizer.mergeFactory. The difference is the mergeFactor controls the optimization process. For example, with the adaptive optimizer, the optimizer will kick in once there are more than mergeFactor segments. The first mergeFactor controls the Lucene mergeFactor and used with BATCH_INSERT transaction isolation (where pure Lucene is used).


Q2. I am using GPS JDBC (DB-Oracle) for indexing. My
table contains 1 billion row & 10 column. Java Heap
Memory= 1GB. and also i am using below compass
setting
<prop
key="compass.engine.connection">${sisearch.root}/sisea
rch</prop>
<prop
key="compass.cache.first">org.compass.core.cache.first
.NullFirstLevelCache</prop>
<prop
key="compass.transaction.lockDir">${sisearch.root}/sis
earch/lock</prop>
<prop
key="compass.engine.optimizer.schedule">false</prop>
<prop
key="compass.engine.indexManagerScheduleInterval">-1</
prop>
<prop
key="compass.engine.cacheIntervalInvalidation">0</prop
<prop
key="compass.engine.waitForCacheInvalidationOnIndexOpe
ration">true</prop>

<property
name="mirrorDataChanges"><value>true</value></propert

Please advise me to set up best configuration
values.

and also tell me the best merge factor value for my
settings.

Thanks

010s

Posts: 50
Registered: 9/9/11
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Re: Difference between compass.engine.mergeFactor and compass.engine.optimizer.
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Re: Difference between compass.engine.mergeFactor and compass.engine.optimizer.
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Re: Difference between compass.engine.mergeFactor and compass.engine.optimizer.
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