ulysses-you commented on code in PR #3178:
URL: https://github.com/apache/incubator-kyuubi/pull/3178#discussion_r936544423
##########
docs/extensions/server/applications.rst:
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@@ -113,4 +82,54 @@ The steps of adding a custom Application Operation
url: Option[String] = None,
error: Option[String] = None)
+For application state mapping, you can reference the implementation of yarn:
+
+ .. code-block:: scala
+
+ def toApplicationState(state: YarnApplicationState): ApplicationState =
state match {
+ case YarnApplicationState.NEW => ApplicationState.PENDING
+ case YarnApplicationState.NEW_SAVING => ApplicationState.PENDING
+ case YarnApplicationState.SUBMITTED => ApplicationState.PENDING
+ case YarnApplicationState.ACCEPTED => ApplicationState.PENDING
+ case YarnApplicationState.RUNNING => ApplicationState.RUNNING
+ case YarnApplicationState.FINISHED => ApplicationState.FINISHED
+ case YarnApplicationState.FAILED => ApplicationState.FAILED
+ case YarnApplicationState.KILLED => ApplicationState.KILLED
+ case _ =>
+ warn(s"The yarn driver state: $state is not supported, " +
+ "mark the application state as UNKNOWN.")
+ ApplicationState.UNKNOWN
+ }
+
+Build A Custom Application Operation
+------------------------------------
+
+- reference kyuubi-server
+
+ .. code-block:: xml
+
+ <dependency>
+ <groupId>org.apache.kyuubi</groupId>
+ <artifactId>kyuubi-server_2.12</artifactId>
+ <version>1.5.2-incubating</version>
+ <scope>provided</scope>
+ </dependency>
+
+- create a custom class which implements the
``org.apache.kyuubi.engine.ApplicationOperation``.
+
+Enable Custom Application Operation
+-----------------------------------
+
+.. note:: Kyuubi uses Java SPI to load the custom Application Operation
+
+1. create a directory META-INF.services and a file with the fully-qualified
name of the interface ``ApplicationOperation``:
Review Comment:
got it
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