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Posted to issues@flink.apache.org by "Stephan Ewen (Jira)" <ji...@apache.org> on 2020/11/23 15:33:00 UTC
[jira] [Commented] (FLINK-20295) File Source lost data when reading
from directories created by FileSystemTableSink with JSON format
[ https://issues.apache.org/jira/browse/FLINK-20295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17237439#comment-17237439 ]
Stephan Ewen commented on FLINK-20295:
--------------------------------------
Thanks for reporting this. Is it possible to have a minimal example that reproduces this problem?
> File Source lost data when reading from directories created by FileSystemTableSink with JSON format
> ---------------------------------------------------------------------------------------------------
>
> Key: FLINK-20295
> URL: https://issues.apache.org/jira/browse/FLINK-20295
> Project: Flink
> Issue Type: Bug
> Components: Connectors / FileSystem, Table SQL / Ecosystem
> Reporter: Yun Gao
> Priority: Critical
> Fix For: 1.12.0
>
> Attachments: compaction.tgz
>
>
> When testing the compaction functionality of the FileSystemTableSink, I found that when using json format, the produced directories could not be read correctly by the file source, namely only a part of records are read.
> By checking the produced directories, the number of the records in it is the same as expected, thus it seems to be the issue of the source side.
>
> The issue only exists for JSON format.
> The data is produced by [FileCompactionTest|https://github.com/gaoyunhaii/flink1.12test/blob/main/src/main/java/FileCompactionTest.java] and read by [FileCompactionCheckTest|https://github.com/gaoyunhaii/flink1.12test/blob/main/src/main/java/FileCompactionCheckTest.java] . An example directories tar file of 8000 records are also attached.
>
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