Victor Malov created HADOOP-12311:
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Summary: Implement stream-based Filesystem API
Key: HADOOP-12311
URL: https://issues.apache.org/jira/browse/HADOOP-12311
Project: Hadoop Common
Issue Type: New Feature
Components: fs
Reporter: Victor Malov
Priority: Minor
After looking at Filesystem API, I couldn't find Stream-based API, which will
be work well with Java lambda-functions and be able chain calls.
As Hadoop 3.0 is going to support JDK 8, I propose implement general
stream-based Filesystem API similar to as implemented in Java SE 8:
static Stream<String> lines(Path path, Charset cs)
This probably will looks similar to this:
try (Stream<Path> stream = Files.list(Paths.get(""))) {
String joined = stream
. map(String::valueOf)
.filter(path -> !path.startsWith("."))
.sorted()
.collect(Collectors.joining("; "));
System.out.println("List: " + joined);
}
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