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https://issues.apache.org/jira/browse/FLINK-7788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201698#comment-16201698
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ASF GitHub Bot commented on FLINK-7788:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/4814#discussion_r144234905
--- Diff:
flink-core/src/main/java/org/apache/flink/configuration/QueryableStateOptions.java
---
@@ -37,10 +37,27 @@
key("query.server.enable")
.defaultValue(true);
- /** Port to bind KvState server to (0 => pick random available port). */
- public static final ConfigOption<Integer> SERVER_PORT =
+ /**
+ * The config parameter defining the server port range of the queryable
state proxy.
+ *
+ * <p>A proxy runs on each Task Manager, so many proxies may run on the
same
+ * machine.
+ *
+ * <p>Given this, and to avoid port clashes, the user can specify a
port range and
+ * the proxy is going to bind to the first free port in that range.
+ *
+ * <p>The specified range can be:
+ * <ol>
+ * <li>a port: "9123",</li>
--- End diff --
I think the strange Javadoc convention (which is based on very old HTML) is
to not have closing `li` tags
> Allow port range for queryable state client proxy.
> --------------------------------------------------
>
> Key: FLINK-7788
> URL: https://issues.apache.org/jira/browse/FLINK-7788
> Project: Flink
> Issue Type: Sub-task
> Components: Queryable State
> Affects Versions: 1.4.0
> Reporter: Kostas Kloudas
> Assignee: Kostas Kloudas
> Fix For: 1.4.0
>
>
> Currently the newly introduced queryable state client proxy can only take one
> port as a parameter to bind to. In case of multiple proxies running on one
> machine, this can result in port clashes and inability to start the
> corresponding proxies.
> This issue proposes to allow the specification of a port range, so that if
> some ports in the range are occupied, the proxy can still pick from the
> remaining free ones.
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