[ http://issues.apache.org/jira/browse/HADOOP-215?page=comments#action_12416783 ]
alan wootton commented on HADOOP-215: ------------------------------------- I think we are abandoning this. Please close this issue. > New method for obtaining report of NameNode and JobTracker internals > -------------------------------------------------------------------- > > Key: HADOOP-215 > URL: http://issues.apache.org/jira/browse/HADOOP-215 > Project: Hadoop > Type: New Feature > Components: mapred, dfs > Reporter: alan wootton > Priority: Minor > > Many weeks ago we (at shopping.com research) decided we wanted to be able to > get reports from the internals of JobTracker and NameNode. The hadoop web > server provides some of this, but we wanted a more structured output, and > easier extensibility. > So, we decided to use xml, and I wrote it. > There is a very thin interface to ClientProtocol, and JobSubmissionProtocol > like this: > public XmlReporter getXmlReport(String classname, String question); > The implementation (in JobTracker and NameNode ) looks like this: > public XmlReporter getXmlReport(String classname, String question) > { > XmlReporter reporter = XmlReporter.getInstance( classname, > this, question); > reporter.report(); > return reporter; > } > The idea being that you pass in some xml (question), an XmlReporter > (classname) is instanciated and passed back. > An XmlReporter object consists of nothing more that two org.w3c.dom.Document > objects (one in the question, the other is the answer). The Writable > interface, for the RPC, simply serializes the dom tree to a string, and then > parses it back to a dom tree. > Anyway, here it is. I would like for it to either make it into the code, or > for me to find anoher way. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
