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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8323) Add CollectionWatcher API to ZkStateReader
Date Tue, 10 May 2016 10:45:13 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15277927#comment-15277927
] 

ASF GitHub Bot commented on SOLR-8323:
--------------------------------------

Github user romseygeek commented on the pull request:

    https://github.com/apache/lucene-solr/pull/32#issuecomment-218122269
  
    New plan!  We now have a separate notification thread, and change notifications are placed
into a LinkedBlockingQueue that the thread waits on.
    
    A caveat: the queue is currently unbounded, which is a Bad Thing.  I'm not sure of the
best way forward here - make it bounded, and just drop notifications if the queue is full?
 Make a note on the collection predicate javadocs that all predicates run in a single thread,
and users need to be careful not to run slow code in them?


> Add CollectionWatcher API to ZkStateReader
> ------------------------------------------
>
>                 Key: SOLR-8323
>                 URL: https://issues.apache.org/jira/browse/SOLR-8323
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 6.0
>            Reporter: Alan Woodward
>            Assignee: Alan Woodward
>         Attachments: SOLR-8323.patch, SOLR-8323.patch, SOLR-8323.patch, SOLR-8323.patch
>
>
> An API to watch for changes to collection state would be a generally useful thing, both
internally and for client use.



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