[GitHub] [flink] Myasuka commented on a change in pull request #7947: [FLINK-11867][Build System]Mistaking in checking filePath's value

[GitBox <gi...@apache.org>]

Myasuka commented on a change in pull request #7947: [FLINK-11867][Build System]Mistaking in checking filePath's value
URL: https://github.com/apache/flink/pull/7947#discussion_r264007594
 
 

 ##########
 File path: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/StreamExecutionEnvironment.java
 ##########
 @@ -958,8 +959,7 @@ public TimeCharacteristic getStreamTimeCharacteristic() {
 	 * @return The data stream that represents the data read from the given file as text lines
 	 */
 	public DataStreamSource<String> readTextFile(String filePath, String charsetName) {
-		Preconditions.checkNotNull(filePath, "The file path must not be null.");
-		Preconditions.checkNotNull(filePath.isEmpty(), "The file path must not be empty.");
+		Preconditions.checkArgument(!StringUtils.isNullOrWhitespaceOnly(filePath), "The file path must not be blank.");
 
 Review comment:
   How about change the error message to `The file path must not be null or blank.`

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services