[ 
https://issues.apache.org/jira/browse/FLINK-20914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ruguo Yu updated FLINK-20914:
-----------------------------
    Description: 
The description of ConfigOption 'security.ssl.internal.session-cache-size' has 
a URL link, as follows:
{code:java}
public static final ConfigOption<Integer> SSL_INTERNAL_SESSION_CACHE_SIZE =
        key("security.ssl.internal.session-cache-size")
                .intType()
                .defaultValue(-1)
                .withDescription(
                        "The size of the cache used for storing SSL session 
objects. "
                                + "According to 
https://github.com/netty/netty/issues/832, you should always set "
                                + "this to an appropriate number to not run 
into a bug with stalling IO threads "
                                + "during garbage collection. (-1 = use system 
default).")
                .withDeprecatedKeys("security.ssl.session-cache-size");
{code}
so the most reasonable way is to use *Text Description* with *Link,* as follows:
{code:java}
public static final ConfigOption<Integer> SSL_INTERNAL_SESSION_CACHE_SIZE =
        key("security.ssl.internal.session-cache-size")
                .intType()
                .defaultValue(-1)
                .withDescription(
                        Description.builder()
                                .text(
                                        "The size of the cache used for storing 
SSL session objects. "
                                                + "According to %s, you should 
always set "
                                                + "this to an appropriate 
number to not run into a bug with stalling IO threads "
                                                + "during garbage collection. 
(-1 = use system default).",
                                        link(
                                                
"https://github.com/netty/netty/issues/832";,
                                                "here"))
                                .build())
                .withDeprecatedKeys("security.ssl.session-cache-size");
{code}

  was:
The description of ConfigOption 'security.ssl.internal.session-cache-size' has 
a URL link, as follows:
{code:java}
public static final ConfigOption<Integer> SSL_INTERNAL_SESSION_CACHE_SIZE =
        key("security.ssl.internal.session-cache-size")
                .intType()
                .defaultValue(-1)
                .withDescription(
                        "The size of the cache used for storing SSL session 
objects. "
                                + "According to 
https://github.com/netty/netty/issues/832, you should always set "
                                + "this to an appropriate number to not run 
into a bug with stalling IO threads "
                                + "during garbage collection. (-1 = use system 
default).")
                .withDeprecatedKeys("security.ssl.session-cache-size");
{code}


> Format the description of 'security.ssl.internal.session-cache-size' option
> ---------------------------------------------------------------------------
>
>                 Key: FLINK-20914
>                 URL: https://issues.apache.org/jira/browse/FLINK-20914
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / Core
>    Affects Versions: 1.12.0
>            Reporter: Ruguo Yu
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.13.0
>
>
> The description of ConfigOption 'security.ssl.internal.session-cache-size' 
> has a URL link, as follows:
> {code:java}
> public static final ConfigOption<Integer> SSL_INTERNAL_SESSION_CACHE_SIZE =
>         key("security.ssl.internal.session-cache-size")
>                 .intType()
>                 .defaultValue(-1)
>                 .withDescription(
>                         "The size of the cache used for storing SSL session 
> objects. "
>                                 + "According to 
> https://github.com/netty/netty/issues/832, you should always set "
>                                 + "this to an appropriate number to not run 
> into a bug with stalling IO threads "
>                                 + "during garbage collection. (-1 = use 
> system default).")
>                 .withDeprecatedKeys("security.ssl.session-cache-size");
> {code}
> so the most reasonable way is to use *Text Description* with *Link,* as 
> follows:
> {code:java}
> public static final ConfigOption<Integer> SSL_INTERNAL_SESSION_CACHE_SIZE =
>         key("security.ssl.internal.session-cache-size")
>                 .intType()
>                 .defaultValue(-1)
>                 .withDescription(
>                         Description.builder()
>                                 .text(
>                                         "The size of the cache used for 
> storing SSL session objects. "
>                                                 + "According to %s, you 
> should always set "
>                                                 + "this to an appropriate 
> number to not run into a bug with stalling IO threads "
>                                                 + "during garbage collection. 
> (-1 = use system default).",
>                                         link(
>                                                 
> "https://github.com/netty/netty/issues/832";,
>                                                 "here"))
>                                 .build())
>                 .withDeprecatedKeys("security.ssl.session-cache-size");
> {code}



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