Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/1342#discussion_r44764775
--- Diff: flink-yarn/src/main/java/org/apache/flink/yarn/Utils.java ---
@@ -135,7 +138,54 @@ public static void setTokensFor(ContainerLaunchContext
amContainer, Path[] paths
ByteBuffer securityTokens = ByteBuffer.wrap(dob.getData(), 0,
dob.getLength());
amContainer.setTokens(securityTokens);
}
-
+
+ /**
+ * Obtain Kerberos security token for HBase.
+ */
+ private static void obtainTokenForHBase(Credentials credentials,
Configuration conf) throws IOException {
+ if (UserGroupInformation.isSecurityEnabled()) {
+ LOG.info("Attempting to obtain Kerberos security token
for HBase");
+ try {
+ // ----
+ // Intended call:
HBaseConfiguration.addHbaseResources(conf);
+ Class
+
.forName("org.apache.hadoop.hbase.HBaseConfiguration")
+ .getMethod("addHbaseResources",
Configuration.class )
+ .invoke(null, conf);
+ // ----
+
+ LOG.info("HBase security setting: {}",
conf.get("hbase.security.authentication"));
+
+ if
(!"kerberos".equals(conf.get("hbase.security.authentication"))) {
+ LOG.info("HBase has not been configured
to use Kerberos.");
+ return;
+ }
+
+ LOG.info("Obtaining Kerberos security token for
HBase");
+ // ----
+ // Intended call:
Token<AuthenticationTokenIdentifier> token = TokenUtil.obtainToken(conf);
+ Token<?> token = (Token<?>) Class
+
.forName("org.apache.hadoop.hbase.security.token.TokenUtil")
+ .getMethod("obtainToken",
Configuration.class)
+ .invoke(null, conf);
+ // ----
+
+ if (token == null) {
+ LOG.error("No Kerberos security token
for HBase available");
+ return;
+ }
+
+ credentials.addToken(token.getService(), token);
+ LOG.info("Added HBase Kerberos security token
to credentials.");
+ } catch ( ClassNotFoundException
+ | NoSuchMethodException
+ | IllegalAccessException
+ | InvocationTargetException e) {
+ LOG.info("HBase is not available (not packaged
with this application).");
--- End diff --
Maybe it makes sense to add the exception to the log message (or even the
full stack trace), so that users have a better understanding what exactly went
wrong (for example hbase version mismatch)
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