michaelli916 commented on a change in pull request #13459:
URL: https://github.com/apache/flink/pull/13459#discussion_r619767739
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File path: docs/content.zh/docs/connectors/table/filesystem.md
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@@ -184,24 +179,25 @@ The file sink supports file compactions, which allows
applications to have small
</tbody>
</table>
-If enabled, file compaction will merge multiple small files into larger files
based on the target file size.
-When running file compaction in production, please be aware that:
-- Only files in a single checkpoint are compacted, that is, at least the same
number of files as the number of checkpoints is generated.
-- The file before merging is invisible, so the visibility of the file may be:
checkpoint interval + compaction time.
-- If the compaction takes too long, it will backpressure the job and extend
the time period of checkpoint.
+启用该参数后，文件压缩功能会根据设定的目标文件大小，合并多个小文件到大文件。
+当在生产环境使用文件压缩功能时，需要注意：
+- 只有检查点内部的文件才会被压缩，也就是说，至少会生成跟检查点个数一样多的文件。
+- 合并前文件是可见的，所以文件的可见性是：检查点间隔 + 压缩时长。
+- 如果压缩花费的时间很长，会对作业产生背压，延长检查点所需时间。
Review comment:
好的。
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