Daryn Sharp created HADOOP-9645: ----------------------------------- Summary: KerberosAuthenticator NPEs on connect error Key: HADOOP-9645 URL: https://issues.apache.org/jira/browse/HADOOP-9645 Project: Hadoop Common Issue Type: Bug Components: fs Affects Versions: 2.0.5-alpha Reporter: Daryn Sharp Priority: Critical
A NPE occurs if there's a kerberos error during initial connect. In this case, the NN was using a HTTP service principal with a stale kvno. It causes webhdfs to fail in a non-user friendly manner by masking the real error from the user. {noformat} java.lang.RuntimeException: java.lang.NullPointerException at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1241) at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2713) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:477) at org.apache.hadoop.security.authentication.client.KerberosAuthenticator.isNegotiate(KerberosAuthenticator.java:164) at org.apache.hadoop.security.authentication.client.KerberosAuthenticator.authenticate(KerberosAuthenticator.java:140) at org.apache.hadoop.security.authentication.client.AuthenticatedURL.openConnection(AuthenticatedURL.java:217) at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.openHttpUrlConnection(WebHdfsFileSystem.java:364) {noformat} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira