Brandon Li created HADOOP-8814:
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Summary: Inefficient comparison with the empty string. Use
isEmpty() instead
Key: HADOOP-8814
URL: https://issues.apache.org/jira/browse/HADOOP-8814
Project: Hadoop Common
Issue Type: Improvement
Components: conf, fs, fs/s3, ha, io, metrics, performance, record,
security, util
Reporter: Brandon Li
Assignee: Brandon Li
Priority: Minor
Prior to JDK 6, we can check if a string is empty in 2 ways:
* if(s != null && s.length() == 0)
* if(("").equals(s)) or if( s.equals(""))
Starting from JDK 6, String class has a new convenience and efficient method
isEmpty() to check string's length.
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