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https://issues.apache.org/jira/browse/FLINK-32023?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rui Fan reassigned FLINK-32023:
-------------------------------
Assignee: Liu
> execution.buffer-timeout cannot be set to -1 ms
> -----------------------------------------------
>
> Key: FLINK-32023
> URL: https://issues.apache.org/jira/browse/FLINK-32023
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.17.0, 1.16.1, 1.18.0
> Reporter: Liu
> Assignee: Liu
> Priority: Major
>
> The desc for execution.buffer-timeout is as following:
> {code:java}
> public static final ConfigOption<Duration> BUFFER_TIMEOUT =
> ConfigOptions.key("execution.buffer-timeout")
> .durationType()
> .defaultValue(Duration.ofMillis(100))
> .withDescription(
> Description.builder()
> .text(
> "The maximum time frequency
> (milliseconds) for the flushing of the output buffers. By default "
> + "the output buffers flush
> frequently to provide low latency and to aid smooth developer "
> + "experience. Setting the
> parameter can result in three logical modes:")
> .list(
> text(
> "A positive value triggers
> flushing periodically by that interval"),
> text(
> FLUSH_AFTER_EVERY_RECORD
> + " triggers flushing
> after every record thus minimizing latency"),
> text(
>
> DISABLED_NETWORK_BUFFER_TIMEOUT
> + " ms triggers
> flushing only when the output buffer is full thus maximizing "
> + "throughput"))
> .build()); {code}
> When we set execution.buffer-timeout to -1 ms, the following error is
> reported:
> {code:java}
> Caused by: java.lang.IllegalArgumentException: Could not parse value '-1 ms'
> for key 'execution.buffer-timeout'.
> at
> org.apache.flink.configuration.Configuration.getOptional(Configuration.java:856)
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.configure(StreamExecutionEnvironment.java:822)
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.<init>(StreamExecutionEnvironment.java:224)
> at
> org.apache.flink.streaming.api.environment.StreamContextEnvironment.<init>(StreamContextEnvironment.java:51)
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.createStreamExecutionEnvironment(StreamExecutionEnvironment.java:1996)
> at java.util.Optional.orElseGet(Optional.java:267)
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.getExecutionEnvironment(StreamExecutionEnvironment.java:1986)
> at com.kuaishou.flink.examples.api.WordCount.main(WordCount.java:27)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:327)
> ... 11 more
> Caused by: java.lang.NumberFormatException: text does not start with a number
> at org.apache.flink.util.TimeUtils.parseDuration(TimeUtils.java:78)
> at
> org.apache.flink.configuration.Configuration.convertToDuration(Configuration.java:1058)
> at
> org.apache.flink.configuration.Configuration.convertValue(Configuration.java:996)
> at
> org.apache.flink.configuration.Configuration.lambda$getOptional$2(Configuration.java:853)
> at java.util.Optional.map(Optional.java:215)
> at
> org.apache.flink.configuration.Configuration.getOptional(Configuration.java:853)
> ... 23 more {code}
> The reason is that the value for Duration can not be negative. We should
> change the behavior or support to trigger flushing only when the output
> buffer is full.
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