Skip to content

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

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Aug 12, 2025
Merged

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

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
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
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion examples/autoscaling/Dockerfile
View file
Open in desktop
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
View file
Open in desktop
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
View file
Open in desktop
Original file line number Diff line number Diff line change
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
Loading