[jira] [Created] (FLINK-15533) Writing DataStream as text file fails due to output path already exists

[Shang Yuanchun (Jira)]

Rui Li created FLINK-15533:
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             Summary: Writing DataStream as text file fails due to output path already exists
                 Key: FLINK-15533
                 URL: https://issues.apache.org/jira/browse/FLINK-15533
             Project: Flink
          Issue Type: Bug
            Reporter: Rui Li


The following program reproduces the issue.
{code}
Configuration configuration = GlobalConfiguration.loadConfiguration();
    configuration.set(DeploymentOptions.TARGET, RemoteExecutor.NAME);
    StreamExecutionEnvironment streamEnv = new StreamExecutionEnvironment(configuration);
    EnvironmentSettings settings =
        EnvironmentSettings.newInstance().useBlinkPlanner().inStreamingMode().build();
    TableConfig tableConfig = new TableConfig();
    StreamTableEnvironment tableEnv = StreamTableEnvironmentImpl.create(streamEnv, settings,
        tableConfig);

    tableEnv
        .connect(new FileSystem().path("file:///path/to/csv"))
        .withSchema(new Schema().field("f1", DataTypes.INT()).field("f2", DataTypes.INT()))
        .withFormat(new OldCsv().fieldDelimiter(","))
        .registerTableSource("src");

    DataStream dataStream = tableEnv.toAppendStream(tableEnv.from("src"), Row.class);
    dataStream.writeAsText("hdfs://localhost:8020/tmp/output");

    streamEnv.execute();
{code}
The job will fail with the follow error, even though the output path doesn't exist before job submission:
{noformat}
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.fs.FileAlreadyExistsException): /tmp/output already exists as a directory
{noformat}



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