[jira] [Resolved] (SOLR-14425) Fix ZK sync usage to be synchronous (blocking)

["David Smiley (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-14425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved SOLR-14425.
---------------------------------
    Resolution: Not A Problem

Not actually a problem; it was my misunderstanding.

> Fix ZK sync usage to be synchronous (blocking)
> ----------------------------------------------
>
>                 Key: SOLR-14425
>                 URL: https://issues.apache.org/jira/browse/SOLR-14425
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>            Reporter: David Smiley
>            Priority: Minor
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> As of this writing, we only use one call to ZK's "sync" method.  It's related to collection aliases -- I added this.  I discovered I misunderstood the semantics of the API; it syncs in the background and thus returns immediately.  Looking at ZK's sync CLI command and Curator both made me realize my folly.  I'm considering this only a "minor" issue because I'm not sure I've seen a bug from this; or maybe I did in spooky test failures over a year ago -- I'm not sure.  And we don't use this pervasively (yet).
> It occurred to me that if Solr embraced the Curator framework abstraction over ZooKeeper, I would not have fallen into that trap.  I'll file a separate issue for that.



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