[FLINK-23098] Update operations playground for 1.13

This closes #22

README.md

@@ -11,7 +11,7 @@ Currently, the following playgrounds are available:
 
 * The **Flink Operations Playground** (in the `operations-playground` folder) lets you explore and play with Flink's features to manage and operate stream processing jobs. You can witness how Flink recovers a job from a failure, upgrade and rescale a job, and query job metrics. The playground consists of a Flink cluster, a Kafka cluster and an example 
 Flink job. The playground is presented in detail in
-["Flink Operations Playground"](https://ci.apache.org/projects/flink/flink-docs-release-1.11/try-flink/flink-operations-playground.html), which is part of the _Try Flink_ section of the Flink documentation.
+["Flink Operations Playground"](https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/try-flink/flink-operations-playground.html), which is part of the _Try Flink_ section of the Flink documentation.
 
 * The **Table Walkthrough** (in the `table-walkthrough` folder) shows to use the Table API to build an analytics pipeline that reads streaming data from Kafka and writes results to MySQL, along with a real-time dashboard in Grafana. The walkthrough is presented in detail in ["Real Time Reporting with the Table API"](https://ci.apache.org/projects/flink/flink-docs-release-1.11/try-flink/table_api.html), which is part of the _Try Flink_ section of the Flink documentation.
 

docker/ops-playground-image/Dockerfile

@@ -32,7 +32,7 @@ RUN mvn clean install
 # Build Operations Playground Image
 ###############################################################################
 
-FROM apache/flink:1.12.1-scala_2.11-java8
+FROM apache/flink:1.13.1-scala_2.12-java8
 
 WORKDIR /opt/flink/bin
 

docker/ops-playground-image/java/flink-playground-clickcountjob/pom.xml

@@ -22,7 +22,7 @@ under the License.
 
 	<groupId>org.apache.flink</groupId>
 	<artifactId>flink-playground-clickcountjob</artifactId>
-	<version>1-FLINK-1.12_2.11</version>
+	<version>1-FLINK-1.13_2.12</version>
 
 	<name>flink-playground-clickcountjob</name>
 	<packaging>jar</packaging>
@@ -44,9 +44,9 @@ under the License.
 
     <properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<flink.version>1.12.1</flink.version>
+		<flink.version>1.13.1</flink.version>
 		<java.version>1.8</java.version>
-		<scala.binary.version>2.11</scala.binary.version>
+		<scala.binary.version>2.12</scala.binary.version>
 		<maven.compiler.source>${java.version}</maven.compiler.source>
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 	</properties>

operations-playground/README.md

@@ -61,4 +61,4 @@ docker-compose down
 ## Further instructions
 
 The playground setup and more detailed instructions are presented in the
-["Getting Started" guide](https://ci.apache.org/projects/flink/flink-docs-release-1.12/try-flink/flink-operations-playground.html) of Flink's documentation.
+["Getting Started" guide](https://ci.apache.org/projects/flink/flink-docs-release-1.13/try-flink/flink-operations-playground.html) of Flink's documentation.

operations-playground/conf/flink-conf.yaml

@@ -30,3 +30,6 @@ state.savepoints.dir: file:///tmp/flink-savepoints-directory
 
 heartbeat.interval: 1000
 heartbeat.timeout: 5000
+
+rest.flamegraph.enabled: true
+web.backpressure.refresh-interval: 10000

operations-playground/docker-compose.yaml

@@ -20,7 +20,7 @@ version: "2.1"
 services:
   client:
     build: ../docker/ops-playground-image
-    image: apache/flink-ops-playground:1-FLINK-1.12-scala_2.11
+    image: apache/flink-ops-playground:1-FLINK-1.13-scala_2.12
     command: "flink run -d /opt/ClickCountJob.jar --bootstrap.servers kafka:9092 --checkpointing --event-time"
     depends_on:
       - jobmanager
@@ -30,12 +30,12 @@ services:
     environment:
       - JOB_MANAGER_RPC_ADDRESS=jobmanager
   clickevent-generator:
-    image: apache/flink-ops-playground:1-FLINK-1.12-scala_2.11
+    image: apache/flink-ops-playground:1-FLINK-1.13-scala_2.12
     command: "java -classpath /opt/ClickCountJob.jar:/opt/flink/lib/* org.apache.flink.playgrounds.ops.clickcount.ClickEventGenerator --bootstrap.servers kafka:9092 --topic input"
     depends_on:
       - kafka
   jobmanager:
-    image: apache/flink:1.12.1-scala_2.11-java8
+    image: apache/flink:1.13.1-scala_2.12-java8
     command: "jobmanager.sh start-foreground"
     ports:
       - 8081:8081
@@ -46,7 +46,7 @@ services:
     environment:
       - JOB_MANAGER_RPC_ADDRESS=jobmanager
   taskmanager:
-    image: apache/flink:1.12.1-scala_2.11-java8
+    image: apache/flink:1.13.1-scala_2.12-java8
     depends_on:
       - jobmanager
     command: "taskmanager.sh start-foreground"
@@ -68,4 +68,5 @@ services:
       KAFKA_CREATE_TOPICS: "input:2:1, output:2:1"
       KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
     ports:
+      - 9092:9092
       - 9094:9094