[jira] [Commented] (SPARK-18960) Avoid double reading file which is being copied.

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15766274#comment-15766274 ] 

Apache Spark commented on SPARK-18960:
--------------------------------------

User 'uncleGen' has created a pull request for this issue:
https://github.com/apache/spark/pull/16370

> Avoid double reading file which is being copied.
> ------------------------------------------------
>
>                 Key: SPARK-18960
>                 URL: https://issues.apache.org/jira/browse/SPARK-18960
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL, Structured Streaming
>    Affects Versions: 2.0.2
>            Reporter: Genmao Yu
>
> In HDFS, when we copy a file into target directory, there will a temporary {{._COPY_}} file for a period of time. The duration depends on file size. If we do not skip this file, we will may read the same data for two times.



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