Zhu Zhu created FLINK-28981: ------------------------------- Summary: Release Testing: Verify FLIP-245 sources speculative execution Key: FLINK-28981 URL: https://issues.apache.org/jira/browse/FLINK-28981 Project: Flink Issue Type: Sub-task Components: Connectors / Common, Runtime / Coordination Reporter: Zhu Zhu Fix For: 1.16.0
Speculative execution is introduced in Flink 1.16 to deal with temporary slow tasks caused by slow nodes. This feature currently consists of 4 FLIPs: - FLIP-168: Speculative Execution core part - FLIP-224: Blocklist Mechanism - FLIP-245: Source Supports Speculative Execution - FLIP-249: Flink Web UI Enhancement for Speculative Execution This ticket aims for verifying FLIP-245, along with FLIP-168, FLIP-224 and FLIP-249. More details about this feature and how to use it can be found in this documentation [PR|https://github.com/apache/flink/pull/20507]. To do the verification, the process can be: - Write Flink jobs which has some {{source}} subtasks running much slower than others. 3 kinds of sources should be verified, including - [Source functions|https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/source/SourceFunction.java] - [InputFormat sources|https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/api/common/io/InputFormat.java] - [FLIP-27 new sources|https://github.com/apache/flink/blob/master//flink-core/src/main/java/org/apache/flink/api/connector/source/Source.java] - Modify Flink configuration file to enable speculative execution and tune the configuration as you like - Submit the job. Checking the web UI, logs, metrics and produced result. -- This message was sent by Atlassian Jira (v8.20.10#820010)