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Posted to issues@flink.apache.org by "CloseRiver (Jira)" <ji...@apache.org> on 2020/10/27 03:07:00 UTC

[jira] [Created] (FLINK-19817) Is FileSystem source unsupported?

CloseRiver created FLINK-19817:
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             Summary: Is FileSystem source unsupported?
                 Key: FLINK-19817
                 URL: https://issues.apache.org/jira/browse/FLINK-19817
             Project: Flink
          Issue Type: Improvement
          Components: Connectors / FileSystem
            Reporter: CloseRiver


When I create a table with filesystem connector + parquet format.Then read from the table and received the following exception.

 
{code:java}
java.lang.UnsupportedOperationException: Complex types not supported.    at org.apache.flink.formats.parquet.vector.ParquetColumnarRowSplitReader.checkSchema(ParquetColumnarRowSplitReader.java:226)    at org.apache.flink.formats.parquet.vector.ParquetColumnarRowSplitReader.<init>(ParquetColumnarRowSplitReader.java:144)    at org.apache.flink.formats.parquet.vector.ParquetSplitReaderUtil.genPartColumnarRowReader(ParquetSplitReaderUtil.java:131)    at org.apache.flink.formats.parquet.ParquetFileSystemFormatFactory$ParquetInputFormat.open(ParquetFileSystemFormatFactory.java:204)    at org.apache.flink.formats.parquet.ParquetFileSystemFormatFactory$ParquetInputFormat.open(ParquetFileSystemFormatFactory.java:159)    at org.apache.flink.streaming.api.functions.source.InputFormatSourceFunction.run(InputFormatSourceFunction.java:85)    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100)    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63)    at org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:201)
{code}
Then I found the description in official document

 

`File system sources for streaming is still under development. In the future, the community will add support for common streaming use cases, i.e., partition and directory monitoring.`

means that read from flilesystem is not supported currently.

But the above exception make users confused.If there is a msg about reading from filesystem is unsupported will be friendly.



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