________________________________ From: Brahma Reddy Battula Sent: Monday, September 24, 2012 11:12 PM To: u...@hadoop.apache.org Subject: [Hadoop-SecureMode-Webconsole]Mismatch in documentation and Code
Dear All, I started cluster in secure-mode by going through following document. http://hadoop.apache.org/docs/r1.0.3/HttpAuthentication.html Got following exception from Name-node. throw new RuntimeException("Could not read HTTP signature secret file: " + signatureSecretFile); Then I debugged the code and checked,,Problem with "hadoop.http.authentication.signature.secret" configuration. Code(AuthenticationFilter.java): static final String SIGNATURE_SECRET_FILE = AuthenticationFilter.SIGNATURE_SECRET + ".file"; While Putting into map(" hadoop.http.authentication.signature.secret" is putting) for (Map.Entry<String, String> entry : conf) { String name = entry.getKey(); if (name.startsWith(PREFIX)) { String value = conf.get(name); name = name.substring(PREFIX.length()); filterConfig.put(name, value); } } Getting from Map:(" hadoop.http.authentication.signature.secret.file" is getting) String signatureSecretFile = filterConfig.get(SIGNATURE_SECRET_FILE); if (signatureSecretFile == null) { throw new RuntimeException("Undefined property: " + SIGNATURE_SECRET_FILE); } try { StringBuilder secret = new StringBuilder(); Reader reader = new FileReader(signatureSecretFile); int c = reader.read(); while (c > -1) { secret.append((char)c); c = reader.read(); } reader.close(); filterConfig.put(AuthenticationFilter.SIGNATURE_SECRET, secret.toString()); } catch (IOException ex) { throw new RuntimeException("Could not read HTTP signature secret file: " + signatureSecretFile); } Here I have two questions: i) why we are puting hadoop.http.authentication.signature.secret and getting hadoop.http.authentication.signature.secret.file..I mean purpose of this..?(I did not gone thru fully). ii)If we configure "hadoop.http.authentication.signature.secret.file",we wn't get any exception.. If this is the expectation then better to change documentation. Please let me know if this needs file..I'll file jira. Thanks And Regards Brahma Reddy