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From "Sami Siren (Updated) (JIRA)" <>
Subject [jira] [Updated] (SOLR-2821) Improve how cluster state is managed in ZooKeeper.
Date Fri, 02 Dec 2011 16:23:40 GMT


Sami Siren updated SOLR-2821:

    Attachment: SOLR-2821.patch

Here's a patch that changes the serialization format to json for all the data types currently
stored in ZK.

The cloudstate serialization code is awfully verbose but so is the current xml code too. If
all the objects were maps or lists the ser/deser would be super simple as Yonik said.
> Improve how cluster state is managed in ZooKeeper.
> --------------------------------------------------
>                 Key: SOLR-2821
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>            Reporter: Mark Miller
>             Fix For: 4.0
>         Attachments: SOLR-2821.patch
> 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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