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https://issues.apache.org/jira/browse/SOLR-16816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17726648#comment-17726648
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ASF subversion and git services commented on SOLR-16816:
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Commit 9ad6c679606f7bd9a510afb74b7be21acafee5fe in solr's branch
refs/heads/main from Houston Putman
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=9ad6c679606 ]
SOLR-16816: Update node metrics when making affinityPlacement selections (#1661)
Therefore selections can be made given the expected cluster
information after the previous selections are implemented.
Initially, this will ensure that replica placements do not
make Solr Nodes go under their minimum free disk space.
> AffinityPlacementPlugin should utilize the size of new replicas when making
> placements
> --------------------------------------------------------------------------------------
>
> Key: SOLR-16816
> URL: https://issues.apache.org/jira/browse/SOLR-16816
> Project: Solr
> Issue Type: Sub-task
> Components: AutoScaling
> Affects Versions: 9.0
> Reporter: Houston Putman
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The AffinityPlacementPlugin has logic to make sure that nodes are not loaded
> up with more indexes than they can handle. It does this by filtering out
> nodes in the selection process that have less free disk space than the
> minimalFreeDiskGB configured.
> However it doesn't take into account the size of the replicas it will create
> when doing this. So if the minimalFreeDiskGB is 30 GB, and the free disk
> space on a node is 50G, and a new replica's shard's leader uses 40GB for its
> index, then the plugin will happily choose this node, even though its likely
> that the node's free disk space will be 10GB after the replica is created,
> which is much smaller than the configured minimalFreeDiskGB.
> This information should also be used when sorting on prioritizedFreeDiskGB.
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