[GitHub] [hadoop] steveloughran commented on pull request #2584: HADOOP-16202. Enhance openFile() for better read performance against object stores

[GitBox]

steveloughran commented on pull request #2584:
URL: https://github.com/apache/hadoop/pull/2584#issuecomment-1075138032


   checkstyle
   
   ```
   
./hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:120:import
 org.apache.hadoop.fs.s3a.select.InternalSelectConstants;:8: Unused import - 
org.apache.hadoop.fs.s3a.select.InternalSelectConstants. [UnusedImports]
   
./hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:194:import
 static 
org.apache.hadoop.fs.impl.AbstractFSBuilderImpl.rejectUnknownMandatoryKeys;:15: 
Unused import - 
org.apache.hadoop.fs.impl.AbstractFSBuilderImpl.rejectUnknownMandatoryKeys. 
[UnusedImports]'
   ```
   
   javac warnings
   ```
   
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:4099:14:[deprecation]
 getDefaultBlockSize() in FileSystem has been deprecated
   
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/CopyFromLocalOperation.java:235:16:[unchecked]
 unchecked method invocation: method sort in interface List is applied to given 
types
   ```


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