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https://issues.apache.org/jira/browse/BLUR-148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13691033#comment-13691033
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Aaron McCurry commented on BLUR-148:
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Take a look at the org.apache.blur.manager.indexserver.DefaultBlurIndexWarmup
class. This class walks through all the indexreader and warming each field as
needed or configured after the index has been opened in a shard server. And
what I mean by warming is that it calculates via sampling where information for
the given fields reside each file in the Directory. After it has calculated
the offsets, the DefaultBlurIndexWarmup class will read in small blocks the
proper positions in the files to populate the BlockCache.
The org.apache.blur.manager.writer.FieldBasedWarmer class is used to warm only
the new segments that have been loaded by the NRT updates in the IndexWriter.
The goal is to have the FieldBasedWarmer class warm the new segments the same
way the DefaultBlurIndexWarmup warms the whole index. So basically we need to
copy much of the logic in the DefaultBlurIndexWarmup class into the
FieldBasedWarmer class.
Aaron
> Need to warm up new segments after NRT reloads
> ----------------------------------------------
>
> Key: BLUR-148
> URL: https://issues.apache.org/jira/browse/BLUR-148
> Project: Apache Blur
> Issue Type: Improvement
> Components: Blur
> Affects Versions: 0.2.0
> Reporter: Aaron McCurry
> Fix For: 0.2.0
>
>
> Need to call the warm index code on new segments after the NRT writer creates
> a new segment. Will also need to add a new state for the
> shardServerLayoutState call.
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