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From "Scott Blum (JIRA)" <>
Subject [jira] [Commented] (SOLR-8696) Optimize overseer + startup
Date Sat, 20 Feb 2016 20:57:18 GMT


Scott Blum commented on SOLR-8696:

What git sha are you on?  I'm absolutely not hitting that break point running that exact test.
 I'm at 091889cf79e15909963b6fad6c0a5394a34764bc.   The only local changes I have are to comment
out the calls to the other tests in that class so that testAddAndDeleteReplica is the only
test method run.

> Optimize overseer + startup
> ---------------------------
>                 Key: SOLR-8696
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>    Affects Versions: 5.4.1
>            Reporter: Scott Blum
>              Labels: patch, performance, solrcloud, startup
>         Attachments: SOLR-8696.patch
> ZkController.publishAndWaitForDownStates() occurs before overseer election.  That means
if there is currently no overseer, there is ironically no one to actually service the down
state changes it's waiting on.  This particularly affects a single-node cluster such as you
might run locally for development.
> Additionally, we're doing an unnecessary ZkStateReader forced refresh on all Overseer
operations.  This isn't necessary because ZkStateReader keeps itself up to date.

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