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https://issues.apache.org/jira/browse/HADOOP-14470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hongyuan Li updated HADOOP-14470:
---------------------------------
Summary: redundant ternary operator in create method of class
CommandWithDestination (was: the ternary operator in create method in class
CommandWithDestination is redundant)
> redundant ternary operator in create method of class CommandWithDestination
> ----------------------------------------------------------------------------
>
> Key: HADOOP-14470
> URL: https://issues.apache.org/jira/browse/HADOOP-14470
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common
> Affects Versions: 3.0.0-alpha3
> Reporter: Hongyuan Li
> Assignee: Hongyuan Li
> Priority: Trivial
> Attachments: HADOOP-14470-001.patch
>
>
> in if statement，the lazyPersist is always true, thus the ternary operator is
> redundant，
> {{lazyPersist == true}} in if statment, so {{lazyPersist ? 1 :
> getDefaultReplication(item.path)}} is redundant.
> related code like below, which is in
> {{org.apache.hadoop.fs.shell.CommandWithDestination}} lineNumber : 504 :
> {code:java}
> FSDataOutputStream create(PathData item, boolean lazyPersist,
> boolean direct)
> throws IOException {
> try {
> if (lazyPersist) { // in if stament, lazyPersist is always true
> ……
> return create(item.path,
> FsPermission.getFileDefault().applyUMask(
> FsPermission.getUMask(getConf())),
> createFlags,
> getConf().getInt(IO_FILE_BUFFER_SIZE_KEY,
> IO_FILE_BUFFER_SIZE_DEFAULT),
> lazyPersist ? 1 : getDefaultReplication(item.path),
> // *this is redundant*
> getDefaultBlockSize(),
> null,
> null);
> } else {
> return create(item.path, true);
> }
> } finally { // might have been created but stream was interrupted
> if (!direct) {
> deleteOnExit(item.path);
> }
> }
> }
> {code}
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