Yang Wang created FLINK-16013: --------------------------------- Summary: List config option could not be parsed correctly Key: FLINK-16013 URL: https://issues.apache.org/jira/browse/FLINK-16013 Project: Flink Issue Type: Bug Components: Runtime / Configuration Reporter: Yang Wang
Currently, if a config option is `List` type and written to a flink-conf.yaml, it could not be parsed correctly when reloaded from yaml resource. The root cause is we use `List#toString` to save into the yaml resource. However, when we want to parse a List from a string, we use semicolon to split the value. The following is a unit test to reproduce this problem. {code:java} public void testWriteConfigurationAndReload() throws IOException { final File flinkConfDir = temporaryFolder.newFolder().getAbsoluteFile(); final Configuration flinkConfig = new Configuration(); final ConfigOption<List<String>> listConfigOption = ConfigOptions .key("test-list-string-key") .stringType() .asList() .noDefaultValue(); final List<String> values = Arrays.asList("value1", "value2", "value3"); flinkConfig.set(listConfigOption, values); assertThat(values, Matchers.containsInAnyOrder(flinkConfig.get(listConfigOption).toArray())); BootstrapTools.writeConfiguration(flinkConfig, new File(flinkConfDir, "flink-conf.yaml")); final Configuration loadedFlinkConfig = GlobalConfiguration.loadConfiguration(flinkConfDir.getAbsolutePath()); assertThat(values, Matchers.containsInAnyOrder(loadedFlinkConfig.get(listConfigOption).toArray())); } {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)