[jira] [Closed] (SOLR-6571) Need a znode watcher support class

["Timothy Potter (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-6571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timothy Potter closed SOLR-6571.
--------------------------------
    Resolution: Won't Fix

Looks like ZkIndexSchemaReader is the only place where this isn't done correctly so there's not really any general problem here. Will fix the schema reader as part of SOLR-6249

> Need a znode watcher support class
> ----------------------------------
>
>                 Key: SOLR-6571
>                 URL: https://issues.apache.org/jira/browse/SOLR-6571
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>            Reporter: Timothy Potter
>
> When implementing SOLR-6249, [~noble.paul] points out that ZkIndexSchemaReader doesn't watch the managed schema znode correctly and should use a strategy similar to what ZkStateReader does so that watchers persist across zk client connection failures:
> The correct example is the constructor of ZkStateReader
>    zkClient = new SolrZkClient(zkServerAddress, zkClientTimeout, zkClientConnectTimeout,
>         // on reconnect, reload cloud info
>         new OnReconnect() {
>             //implement stuff here
>          }
>         });
> this ensures that the watchers are persisted across reconnect.
> We need a watch support class to help developers implement watchers correctly instead of having some code do it correctly and other code not.



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