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https://issues.apache.org/jira/browse/SOLR-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120164#comment-13120164
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Andrzej Bialecki commented on SOLR-2809:
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Multiple leases could lead to searchers piling up ... perhaps it's less
expensive to pass around searcher versions and fail+retry distributed requests
if the reported version from a node disagrees with the version obtained during
earlier phases? I guess it depends on the rate of change, and consequently the
likelihood of failure.
> searcher leases
> ---------------
>
> Key: SOLR-2809
> URL: https://issues.apache.org/jira/browse/SOLR-2809
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
>
> Leases/reservations on searcher instances would give us the ability to use
> the same searcher across phases of a distributed search, or for clients to
> send multiple requests and have them hit a consistent/unchanging view of the
> index. The latter requires something extra to ensure that the load balancer
> contacts the same replicas as before.
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