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https://issues.apache.org/jira/browse/SOLR-17650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17930453#comment-17930453
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ASF subversion and git services commented on SOLR-17650:
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Commit 76fdb86b3ee321bb43ef9b1de2d19d04be517922 in solr's branch
refs/heads/branch_9x from Houston Putman
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=76fdb86b3ee ]
SOLR-17650: Add in missing gradle dependency
> Determine executor for UpdateLog reading
> ----------------------------------------
>
> Key: SOLR-17650
> URL: https://issues.apache.org/jira/browse/SOLR-17650
> Project: Solr
> Issue Type: Improvement
> Reporter: Houston Putman
> Assignee: Houston Putman
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.9
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Currently most operations that read from the updateLog use the
> OrderedExecutor that is setup for that purpose. However, TLOG replicas, when
> taking leadership, read from the updateLog without the executor (using the
> inSortedOrder = true parameter).
> SOLR-17391 changed the default executor for updateLog reading to use a fixed
> coreSize thread pool, which seems like started to enable parallel reading of
> the updateLog (which was supposed to be true beforehand, but it looks like
> our understanding of the executor was wrong).
> This ticket's purpose is to:
> # Investigate the correct way of reading the updateLog using an executor
> # Determine if there needs to actually be multiple ways
> (inSortedOrder=true/false)
> # Make sure the tests pass with whatever we decide.
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