[
https://issues.apache.org/jira/browse/SOLR-7361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14484188#comment-14484188
]
Timothy Potter commented on SOLR-7361:
--------------------------------------
[~andyetitmoves] ah ok, I misunderstood, what you're saying makes sense. I'll
try to tackle this on Thursday or Friday this week as I'm focused on a couple
of other issues first, so if someone else can pick this up sooner, that would
be great.
> Main Jetty thread blocked by core loading delays HTTP listener from binding
> if core loading is slow
> ---------------------------------------------------------------------------------------------------
>
> Key: SOLR-7361
> URL: https://issues.apache.org/jira/browse/SOLR-7361
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Timothy Potter
>
> During server startup, the CoreContainer uses an ExecutorService to load
> cores in multiple back-ground threads but then blocks until cores are loaded,
> see: CoreContainer#load around line 290 on trunk (invokeAll). From the
> JavaDoc on that method, we have:
> {quote}
> Executes the given tasks, returning a list of Futures holding their status
> and results when all complete. Future.isDone() is true for each element of
> the returned list.
> {quote}
> In other words, this is a blocking call.
> This delays the Jetty HTTP listener from binding and accepting requests until
> all cores are loaded. Do we need to block the main thread?
> Also, prior to this happening, the node is registered as a live node in ZK,
> which makes it a candidate for receiving requests from the Overseer, such as
> to service a create collection request. The problem of course is that the
> node listed in /live_nodes isn't accepting requests yet. So we either need to
> unblock the main thread during server loading or maybe wait longer before we
> register as a live node ... not sure which is the better way forward?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
