Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/6178#discussion_r196701452 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/rest/FileUploadHandler.java --- @@ -116,5 +136,16 @@ private void reset() { currentHttpPostRequestDecoder.destroy(); currentHttpPostRequestDecoder = null; currentHttpRequest = null; + currentUploadDir = null; + currentJsonPayload = null; + } + + public static Optional<byte[]> getMultipartJsonPayload(ChannelHandlerContext ctx) { + return Optional.ofNullable(ctx.channel().attr(UPLOADED_JSON).get()); + } + + public static FileUploads getMultipartFileUploads(ChannelHandlerContext ctx) { + return Optional.ofNullable(ctx.channel().attr(UPLOADED_FILES).get()) + .orElse(FileUploads.EMPTY); --- End diff -- I think not much. My gut feeling is just that `FileUploads` can be simplified. Instead of having our own FileVisitor, we could simply call `FileUtils.deleteDirectory(uploadDirectory)`. And I think this class has actually two responsibilities: Listing all files to make them accessible and storing the directories in which they reside to delete them afterwards.
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