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https://issues.apache.org/jira/browse/FLINK-9707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532186#comment-16532186
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ASF GitHub Bot commented on FLINK-9707:
---------------------------------------
Github user lamber-ken commented on a diff in the pull request:
https://github.com/apache/flink/pull/6243#discussion_r199997861
--- Diff:
flink-core/src/main/java/org/apache/flink/core/fs/local/LocalFileSystem.java ---
@@ -254,7 +254,7 @@ else if (file.exists() && !file.isDirectory()) {
}
else {
File parent = file.getParentFile();
- return (parent == null || mkdirsInternal(parent)) &&
file.mkdir();
+ return (parent == null || mkdirsInternal(parent)) &&
(file.mkdir() || file.isDirectory());
--- End diff --
emm, why not use `synchronized` to prevent?
> LocalFileSystem does not support concurrent directory creations
> ---------------------------------------------------------------
>
> Key: FLINK-9707
> URL: https://issues.apache.org/jira/browse/FLINK-9707
> Project: Flink
> Issue Type: Improvement
> Components: FileSystem
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.6.0, 1.5.1
>
>
> The {{LocalFileSystem}} does not support concurrent directory creations. The
> consequence is that file system operations fail.
> I think the culprit is the following line:
> https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/core/fs/local/LocalFileSystem.java#L257
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