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https://issues.apache.org/jira/browse/SOLR-6816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14382306#comment-14382306
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Timothy Potter commented on SOLR-6816:
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bq. Can you tell what part is taking so much time?
If you already knew the answer, why did you ask? ;-) your assumption was
correct -- it spends most of the time is spent doing {{long lookup =
searcher.lookupId(idBytes);}} ... this is explains why docValues for version
didn't help because the doc doesn't exist so we never get to the ValueSource
code where the docValues would help ;-)
bq. If we could initialize the highest versions correctly (would need to get
from the index) ...
Can you expand on this a bit? I'm not clear how we would get the latest version
of the bucket from the index?
> Review SolrCloud Indexing Performance.
> --------------------------------------
>
> Key: SOLR-6816
> URL: https://issues.apache.org/jira/browse/SOLR-6816
> Project: Solr
> Issue Type: Task
> Components: SolrCloud
> Reporter: Mark Miller
> Priority: Critical
> Attachments: SolrBench.pdf
>
>
> We have never really focused on indexing performance, just correctness and
> low hanging fruit. We need to vet the performance and try to address any
> holes.
> Note: A common report is that adding any replication is very slow.
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