Andrew Wang 6bd600eef2 HADOOP-13861. Spelling errors in logging and exceptions for code. Contributed by Grant Sohn.
(cherry picked from commit 7b988e88992528a0cac2ca8893652c5d4a90c6b9)

 Conflicts:
	hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/util/GF256.java
	hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/KDiag.java
2016-12-05 23:21:03 -08:00
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Hadoop Auth, Java HTTP SPNEGO

Hadoop Auth is a Java library consisting of a client and a server
components to enable Kerberos SPNEGO authentication for HTTP.

The client component is the AuthenticatedURL class.

The server component is the AuthenticationFilter servlet filter class.

Authentication mechanisms support is pluggable in both the client and
the server components via interfaces.

In addition to Kerberos SPNEGO, Hadoop Auth also supports Pseudo/Simple
authentication (trusting the value of the query string parameter
'user.name').