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https://issues.apache.org/jira/browse/SOLR-2821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161522#comment-13161522
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Yonik Seeley commented on SOLR-2821:
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bq. Sami said he noticed that 150ms of the 200ms it takes to update the cluster
state looks like its in parsing the XML. I wonder if json would be faster to
parse...
It was significantly faster when I tested a few years ago.
ObjectBuilder.fromJSON(String) is a one-step easy way to get a whole object
graph (Map, List, etc).
Streaming (not materializing the object graph) is the fastest of course.
> Improve how cluster state is managed in ZooKeeper.
> --------------------------------------------------
>
> Key: SOLR-2821
> URL: https://issues.apache.org/jira/browse/SOLR-2821
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Mark Miller
> Fix For: 4.0
>
>
> Currently, we have issues supporting both incremental cluster state updates
> (needed because reading the state with many ZK requests does not scale) and
> allowing shard/node properties to change on the fly. We be nice to have a
> solution that allows faster cluster state reads and easy on the fly
> shard/node prop changes.
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