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[FLINK-38123] Upgrade flink version in the autoscaling example #1004

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[FLINK-38123] Upgrade flink version in the autoscaling example #1004

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461290e
[FLINK-38123] Upgrade base image Flink version for the autoscaling ex…
kaygorodov Aug 3, 2025
f6ec738
[FLINk-38123] Switch to new Flink APIs to replace deprecated methods …
kaygorodov Aug 3, 2025
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2 changes: 1 addition & 1 deletion examples/autoscaling/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -16,5 +16,5 @@
# limitations under the License.
################################################################################

FROM flink:1.18
FROM flink:1.20.1-java17
COPY ./target/autoscaling*.jar /opt/flink/usrlib/autoscaling.jar
10 changes: 2 additions & 8 deletions examples/autoscaling/src/main/java/autoscaling/AutoscalingExample.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.sink.SinkFunction;
import org.apache.flink.streaming.api.functions.sink.v2.DiscardingSink;

/** Autoscaling Example. */
public class AutoscalingExample {
Expand All @@ -43,13 +43,7 @@ public Long map(Long i) throws Exception {
return end;
}
});
stream.addSink(
new SinkFunction<Long>() {
@Override
public void invoke(Long value, Context context) throws Exception {
// Do nothing
}
});
stream.sinkTo(new DiscardingSink<>());
env.execute("Autoscaling Example");
}
}
9 changes: 5 additions & 4 deletions examples/autoscaling/src/main/java/autoscaling/LoadSimulationPipeline.java
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Expand Up @@ -27,7 +27,7 @@
import org.apache.flink.connector.datagen.source.GeneratorFunction;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.sink.DiscardingSink;
import org.apache.flink.streaming.api.functions.sink.v2.DiscardingSink;
import org.apache.flink.util.Collector;

import org.slf4j.Logger;
Expand Down Expand Up @@ -128,7 +128,7 @@ public static void main(String[] args) throws Exception {
.broadcast();
}

stream.addSink(new DiscardingSink<>());
stream.sinkTo(new DiscardingSink<>());
}

env.execute(
Expand Down Expand Up @@ -164,15 +164,16 @@ public void flatMap(Long record, Collector<Long> out) throws Exception {

double amplitude = getAmplitude(currentEpoch);

double loadPerSubTask = maxLoad / getRuntimeContext().getNumberOfParallelSubtasks();
double loadPerSubTask =
maxLoad / getRuntimeContext().getTaskInfo().getNumberOfParallelSubtasks();

long busyTimeMs = (long) (loadPerSubTask * samplingIntervalMs * amplitude);
long remainingTimeMs =
(timeMillis / samplingIntervalMs + 1) * samplingIntervalMs - timeMillis;
long sleepTime = Math.min(busyTimeMs, remainingTimeMs);
LOG.info(
"{}> epoch: {} busyTime: {} remainingTime: {} sleepTime: {} amplitude: {}",
getRuntimeContext().getIndexOfThisSubtask(),
getRuntimeContext().getTaskInfo().getIndexOfThisSubtask(),
currentEpoch,
busyTimeMs,
remainingTimeMs,
Expand Down