Marcelo Vanzin f32f16fd68 [SPARK-29082][CORE] Skip delegation token generation if no credentials are available ... This situation can happen when an external system (e.g. Oozie) generates delegation tokens for a Spark application. The Spark driver will then run against secured services, have proper credentials (the tokens), but no kerberos credentials. So trying to do things that requires a kerberos credential fails. Instead, if no kerberos credentials are detected, just skip the whole delegation token code. Tested with an application that simulates Oozie; fails before the fix, passes with the fix. Also with other DT-related tests to make sure other functionality keeps working. Closes #25805 from vanzin/SPARK-29082. Authored-by: Marcelo Vanzin <vanzin@cloudera.com> Signed-off-by: Marcelo Vanzin <vanzin@cloudera.com>		2019-09-18 13:30:00 -07:00
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benchmarks	[SPARK-29081][CORE] Replace calls to SerializationUtils.clone on properties with a faster implementation	2019-09-15 00:28:32 -07:00
src	[SPARK-29082][CORE] Skip delegation token generation if no credentials are available	2019-09-18 13:30:00 -07:00
pom.xml	[SPARK-17875][CORE][BUILD] Remove dependency on Netty 3	2019-08-21 21:27:56 -07:00