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From: smarthi <git@git.apache.org>
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Subject: [GitHub] flink pull request #2275: FLINK-3929 Support for Kerberos Authentication wit...
Content-Type: text/plain
Message-Id: <20160727162041.E4D3CE02A2@git1-us-west.apache.org>
Date: Wed, 27 Jul 2016 16:20:41 +0000 (UTC)
archived-at: Wed, 27 Jul 2016 16:20:50 -0000

Github user smarthi commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2275#discussion_r72472262
  
    --- Diff: flink-core/src/main/java/org/apache/flink/util/Preconditions.java ---
    @@ -293,6 +293,16 @@ private static String format(@Nullable String template, @Nullable Object... args
     
     		return builder.toString();
     	}
    +
    +	/**
    +	 * Returns {@code true} if the given string is null or is the empty string.
    +	 * @param string a string reference to check
    +	 * @return {@code true} if the string is null or is the empty string
    +	 */
    +	public static boolean isNullOrEmpty(@Nullable String string) {
    --- End diff --
    
    Consider using Apache Commons StringUtils.isBlank() for this.


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