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https://issues.apache.org/jira/browse/HADOOP-9645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-9645.
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Resolution: Duplicate
Target Version/s: (was: 2.1.0-beta)
> 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}
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