[GitHub] [hadoop] steveloughran commented on a change in pull request #568: HADOOP-15691 Add PathCapabilities to FS and FC to complement StreamCapabilities

[GitBox <gi...@apache.org>]

steveloughran commented on a change in pull request #568: HADOOP-15691 Add PathCapabilities to FS and FC to complement StreamCapabilities
URL: https://github.com/apache/hadoop/pull/568#discussion_r327565927
 
 

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 File path: hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AbstractFileSystem.java
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 @@ -1371,4 +1373,16 @@ public boolean equals(Object other) {
         new CompletableFuture<>(), () -> open(path, bufferSize));
   }
 
+  public boolean hasPathCapability(final Path path,
+      final String capability)
 
 Review comment:
   > Was curious about examples where different paths in the same FS would have different capabilities.
   
   Files HDFS encryption zones behave differently; viewfs relays things, and any DFS whose mount points may have different semantics can do it. Oh, and WASB has an option for special path where leases need to be acquired before renames -HBase needs that

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