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https://issues.apache.org/jira/browse/SOLR-17711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-17711:
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Labels: pull-request-available (was: )
> IndexFetcher Incorrectly Timing Out
> -----------------------------------
>
> Key: SOLR-17711
> URL: https://issues.apache.org/jira/browse/SOLR-17711
> Project: Solr
> Issue Type: Bug
> Affects Versions: 9.8
> Reporter: Luke Kot-Zaniewski
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> During our rollout of 9.8 we discovered an interesting
> behavior indirectly caused by the Http2SolrClient migration
> of IndexFetcher:
>
> https://github.com/apache/solr/commit/e62cb1b0066132347589b5e5ca38f38fd5e668d0
>
> The change itself does not appear to be the problem, but
> rather the default behavior of Http2SolrClient applying
> the *idle* timeout to the overall request time:
>
> [https://github.com/apache/solr/blob/2b8f933529fa736fe5fd2a9b0c751bedf352f0c7/solr/solrj/src/java/org/apache/solr/client/solrj/impl/Http2SolrClient.java#L625-L629]
>
> Apparently this choice of default has some history:
>
> [https://github.com/apache/solr/commit/a80eb84d5659a06a10860ad2470e87d80b19fa5d]
> +
> in its current form:
> [https://github.com/apache/solr/commit/d70af456058174d15a25d3c9b8cc5f7a8899b62b]
>
> At any rate, in most cases this goes unnoticed because the
> default idle timeout is quite long (120 seconds) but can
> cause problems when applied to something like IndexFetcher
> which is probably *expected* to have sometimes really long-lived,
> healthy connections exceeding the 120s period. An *idle*
> timeout being applied to a long-lived, non-idle connection
> doesn't seem quite right...
>
> We saw this during replication of a 5GB segment which, at
> our bandwidth at the time, exceeded the 120 second time window
> and caused the Cloud to get stuck in a replication loop.
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