[jira] [Created] (FLINK-20197) FileSink fails with UnsupportedOperationException when using default values

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-20197:
-------------------------------------

             Summary: FileSink fails with UnsupportedOperationException when using default values
                 Key: FLINK-20197
                 URL: https://issues.apache.org/jira/browse/FLINK-20197
             Project: Flink
          Issue Type: Bug
          Components: API / DataStream, Connectors / FileSystem
    Affects Versions: 1.12.0
            Reporter: Till Rohrmann
             Fix For: 1.12.0


When using the default values for the new {{FileSink}}, it fails with

{code}
Caused by: java.lang.UnsupportedOperationException: not supported
        at org.apache.flink.connector.file.sink.writer.FileWriter$BucketerContext.currentProcessingTime(FileWriter.java:296) ~[flink-connector-files-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.api.functions.sink.filesystem.bucketassigners.DateTimeBucketAssigner.getBucketId(DateTimeBucketAssigner.java:111) ~[flink-file-sink-common-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.api.functions.sink.filesystem.bucketassigners.DateTimeBucketAssigner.getBucketId(DateTimeBucketAssigner.java:55) ~[flink-file-sink-common-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.connector.file.sink.writer.FileWriter.write(FileWriter.java:189) ~[flink-connector-files-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.operators.sink.AbstractSinkWriterOperator.processElement(AbstractSinkWriterOperator.java:80) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:71) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:46) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:26) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.api.operators.StreamGroupedReduceOperator.processElement(StreamGroupedReduceOperator.java:68) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitRecord(OneInputStreamTask.java:193) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:179) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:152) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:372) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:186) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:574) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:538) ~[flink-streaming-java_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) ~[flink-runtime_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547) ~[flink-runtime_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at java.lang.Thread.run(Thread.java:834) ~[?:?]
{code}

The problem seems that the {{FileWriter.BucketerContext.currentProcessingTime}} throws an {{UnsupportedOperationException}}. This feels not correct. A job for reproducing the problem can be found [here|https://github.com/tillrohrmann/flink-streaming-batch-execution/tree/file-sink-fails-with-default-bucket-assigner].



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