[jira] [Updated] (ZOOKEEPER-1997) fix standalone server comes up with a client port

["Hongchao Deng (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-1997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hongchao Deng updated ZOOKEEPER-1997:
-------------------------------------

    Summary: fix standalone server comes up with a client port  (was: Fix )

> fix standalone server comes up with a client port
> -------------------------------------------------
>
>                 Key: ZOOKEEPER-1997
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1997
>             Project: ZooKeeper
>          Issue Type: Bug
>            Reporter: Hongchao Deng
>
> The current problem is that it goes to standalone mode if there is only one server in ensemble description.
> {code}
> server.1=xxx
> {code}
> This [check|https://github.com/apache/zookeeper/blob/4bb76bd22916de8dcfe0c40f649d02d61737e871/src/java/main/org/apache/zookeeper/server/quorum/QuorumPeerConfig.java#L403] will throw an exception: 
> {code}
>    } else if (numParticipators == 1 && standaloneEnabled) {
>             // HBase currently adds a single server line to the config, for
>             // b/w compatibility reasons we need to keep this here. If standaloneEnabled
>             // is true, the QuorumPeerMain script will create a standalone server instead
>             // of a quorum configuration
>             LOG.error("Invalid configuration, only one server specified (ignoring)");
>             if (numObservers > 0) {
>                 throw new IllegalArgumentException("Observers w/o quorum is an invalid configuration");
>             }
>         }
> {code}
> The test [testStandaloneQuorum|https://github.com/apache/zookeeper/blob/fa6d21fa8a8acba812237538e4f7172faf969d37/src/java/test/org/apache/zookeeper/test/StandaloneTest.java#L64] was incorrectly successful before -- the client port was ignored and the server was responding through the jetty port.
> When I do a client port check, it failed.



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