Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18303#discussion_r122596434
--- Diff: core/src/main/scala/org/apache/spark/deploy/JsonProtocol.scala ---
@@ -21,74 +21,192 @@ import org.json4s.JsonAST.JObject
import org.json4s.JsonDSL._
import org.apache.spark.deploy.DeployMessages.{MasterStateResponse,
WorkerStateResponse}
-import org.apache.spark.deploy.master.{ApplicationInfo, DriverInfo,
WorkerInfo}
+import org.apache.spark.deploy.master._
+import org.apache.spark.deploy.master.RecoveryState.MasterState
import org.apache.spark.deploy.worker.ExecutorRunner
private[deploy] object JsonProtocol {
- def writeWorkerInfo(obj: WorkerInfo): JObject = {
- ("id" -> obj.id) ~
- ("host" -> obj.host) ~
- ("port" -> obj.port) ~
- ("webuiaddress" -> obj.webUiAddress) ~
- ("cores" -> obj.cores) ~
- ("coresused" -> obj.coresUsed) ~
- ("coresfree" -> obj.coresFree) ~
- ("memory" -> obj.memory) ~
- ("memoryused" -> obj.memoryUsed) ~
- ("memoryfree" -> obj.memoryFree) ~
- ("state" -> obj.state.toString) ~
- ("lastheartbeat" -> obj.lastHeartbeat)
- }
+ /**
+ * Export the [[WorkerInfo]] to a Json object, a [[WorkerInfo]] consists
of the information of a
+ * worker.
+ *
+ * @return a Json object containing the following fields:
+ * `id` a string identifier of the worker
+ * `host` the host that the worker is running on
+ * `port` the port that the worker is bound to
+ * `address` ${host}:${port}
--- End diff --
If we already has host and port, why we still need the `address`?
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