Re: flink 1.11 ddl sql 添加PROCTIME()列，读取csv错误

Thu, 23 Jul 2020 07:29:13 -0700 

Hi,

Filesystem connector 支持streaming 写入，streaming 读取 还未支持，所以读取完了就停止。支持streaming 
写入从文档上看[1]应该是有计划的


[1]https://ci.apache.org/projects/flink/flink-docs-release-1.11/zh/dev/table/connectors/filesystem.html
 
<https://ci.apache.org/projects/flink/flink-docs-release-1.11/zh/dev/table/connectors/filesystem.html>


> 在 2020年7月23日，22:05，Asahi Lee <978466...@qq.com> 写道：
> 
> 使用filesystem读取csv作为源，使用流环境，为什么我的程序一执行就停止，而不是等待文件的追加写入，继续计算呢？
> 还是filesystem只能用于批操作？
> 
> 
> 
> 
> ------------------&nbsp;原始邮件&nbsp;------------------
> 发件人:                                                                          
>                                               "user-zh"                       
>                                                              
> <xbjt...@gmail.com <mailto:xbjt...@gmail.com>&gt;;
> 发送时间:&nbsp;2020年7月23日(星期四) 上午9:55
> 收件人:&nbsp;"user-zh"<user-zh@flink.apache.org 
> <mailto:user-zh@flink.apache.org>&gt;;
> 
> 主题:&nbsp;Re: flink 1.11 ddl sql 添加PROCTIME()列，读取csv错误
> 
> 
> 
> Hi, Asahi
> 
> 这是一个已知bug[1]，filesystem connector上处理计算列有点问题，已经有PR了，会在1.11.2和1.12版本上修复
> 
> 
> Best
> Leonard Xu
> [1] https://issues.apache.org/jira/browse/FLINK-18665 
> <https://issues.apache.org/jira/browse/FLINK-18665> 
> <https://issues.apache.org/jira/browse/FLINK-18665&gt 
> <https://issues.apache.org/jira/browse/FLINK-18665&gt>;
> 
> &gt; 在 2020年7月23日，00:07，Asahi Lee <978466...@qq.com 
> <mailto:978466...@qq.com>&gt; 写道：
> &gt; 
> &gt; 1. 程序
> &gt; StreamExecutionEnvironment bsEnv = 
> StreamExecutionEnvironment.getExecutionEnvironment();
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; EnvironmentSettings 
> bsSettings = 
> EnvironmentSettings.newInstance().useBlinkPlanner().inStreamingMode().build();
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; StreamTableEnvironment 
> bsTableEnv = StreamTableEnvironment.create(bsEnv, bsSettings);
> &gt; 
> &gt; 
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; String sourceTableDDL = 
> "CREATE TABLE fs_table (" +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; user_id STRING," +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; order_amount DOUBLE," +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; dt TIMESTAMP(3)," +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; pt AS PROCTIME() " +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; " ) WITH (" +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; 'connector'='filesystem'," +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; 'path'='D:\\Program 
> Files\\JetBrains\\workspace\\table-walkthrough\\src\\main\\resources\\csv\\order.csv',"
>  +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; "&amp;nbsp; 'format'='csv'" +
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> &amp;nbsp; &amp;nbsp; " )";
> &gt; 
> &gt; 
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> bsTableEnv.executeSql(sourceTableDDL);
> &gt; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; 
> bsTableEnv.executeSql("select * from fs_table").print();
> &gt; 2. csv文件
> &gt; order.csv
> &gt; zhangsan,12.34,2020-08-03 12:23:50
> &gt; lisi,234.67,2020-08-03 12:25:50
> &gt; wangwu,57.6,2020-08-03 12:25:50
> &gt; zhaoliu,345,2020-08-03 12:28:50
> &gt; 
> &gt; 
> &gt; 
> &gt; 3. 错误
> &gt; &amp;nbsp;- Source: FileSystemTableSource(user_id, order_amount, dt, pt) 
> -&amp;gt; Calc(select=[user_id, order_amount, dt, PROCTIME_MATERIALIZE(()) AS 
> pt]) -&amp;gt; SinkConversionToRow (4/6) (9ee0383d676a190b0a62d206039db26c) 
> switched from RUNNING to FAILED.
> &gt; java.io.IOException: Failed to deserialize CSV row.
> &gt;  at 
> org.apache.flink.formats.csv.CsvFileSystemFormatFactory$CsvInputFormat.nextRecord(CsvFileSystemFormatFactory.java:299)
> &gt;  at 
> org.apache.flink.formats.csv.CsvFileSystemFormatFactory$CsvInputFormat.nextRecord(CsvFileSystemFormatFactory.java:210)
> &gt;  at 
> org.apache.flink.streaming.api.functions.source.InputFormatSourceFunction.run(InputFormatSourceFunction.java:91)
> &gt;  at 
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100)
> &gt;  at 
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63)
> &gt;  at 
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:201)
> &gt; Caused by: java.lang.RuntimeException: Row length mismatch. 4 fields 
> expected but was 3.
> &gt;  at 
> org.apache.flink.formats.csv.CsvRowDataDeserializationSchema.validateArity(CsvRowDataDeserializationSchema.java:441)
> &gt;  at 
> org.apache.flink.formats.csv.CsvRowDataDeserializationSchema.lambda$createRowConverter$1ca9c073$1(CsvRowDataDeserializationSchema.java:244)
> &gt;  at 
> org.apache.flink.formats.csv.CsvFileSystemFormatFactory$CsvInputFormat.nextRecord(CsvFileSystemFormatFactory.java:293)
> &gt;  ... 5 more

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