Example usage for org.apache.hadoop.security UserGroupInformation getUGIFromTicketCache

Introduction

In this page you can find the example usage for org.apache.hadoop.security UserGroupInformation getUGIFromTicketCache.

Prototype

@InterfaceAudience.Public
@InterfaceStability.Evolving
public static UserGroupInformation getUGIFromTicketCache(String ticketCache, String user) throws IOException 

Source Link

Document

Create a UserGroupInformation from a Kerberos ticket cache.

Usage

From source file:org.apache.phoenix.queryserver.client.SqllineWrapper.java

License:Apache License

static UserGroupInformation loginIfNecessary(Configuration conf) {
    // Try to avoid HBase dependency too. Sadly, we have to bring in all of hadoop-common for this..
    if ("kerberos".equalsIgnoreCase(conf.get(HBASE_AUTHENTICATION_ATTR))) {
        // sun.security.krb5.principal is the property for setting the principal name, if that
        // isn't set, fall back to user.name and hope for the best.
        String principal = System.getProperty("sun.security.krb5.principal", System.getProperty("user.name"));
        try {//from w  w w.j  a va2s  . co  m
            // We got hadoop-auth via hadoop-common, so might as well use it.
            return UserGroupInformation.getUGIFromTicketCache(null, principal);
        } catch (Exception e) {
            throw new RuntimeException("Kerberos login failed using ticket cache. Did you kinit?", e);
        }
    }
    return null;
}

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