diff --git a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml index 1b97fefd926..3ef98086e1a 100644 --- a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml +++ b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml @@ -655,6 +655,27 @@ + + hadoop.security.token.service.use_ip + true + + Controls whether tokens always use IP addresses. + DNS changes will not be detected if this option is enabled. + Existing client connections that break will always reconnect + to the IP of the original host. New clients will connect + to the host's new IP but fail to locate a token. + Disabling this option will allow existing and new clients + to detect an IP change and continue to locate the new host's token. + + In secure multi-homed environments, this parameter will need to + be set to false on both cluster servers and clients (see HADOOP-7733). + If it is not set correctly, the symptom will be inability to + submit an application to YARN from an external client + (with error "client host not a member of the Hadoop cluster"), + or even from an in-cluster client if server failover occurs. + + + hadoop.workaround.non.threadsafe.getpwuid true