maobaolong created HDFS-13480:
---------------------------------
Summary: RBF: separate namenodeHeartbeat and routerHeartbeat to
different config key.
Key: HDFS-13480
URL: https://issues.apache.org/jira/browse/HDFS-13480
Project: Hadoop HDFS
Issue Type: Bug
Reporter: maobaolong
Assignee: maobaolong
Now, if i enable the heartbeat.enable, but i do not want to monitor any
namenode, i get an ERROR log like:
{code:java}
[2018-04-19T14:00:03.057+08:00] [ERROR]
federation.router.Router.serviceInit(Router.java 214) [main] : Heartbeat is
enabled but there are no namenodes to monitor
{code}
and if i disable the heartbeat.enable, we cannot get any mounttable update,
because the following logic in Router.javaļ¼
{code:java}
if (conf.getBoolean(
RBFConfigKeys.DFS_ROUTER_HEARTBEAT_ENABLE,
RBFConfigKeys.DFS_ROUTER_HEARTBEAT_ENABLE_DEFAULT)) {
// Create status updater for each monitored Namenode
this.namenodeHeartbeatServices = createNamenodeHeartbeatServices();
for (NamenodeHeartbeatService hearbeatService :
this.namenodeHeartbeatServices) {
addService(hearbeatService);
}
if (this.namenodeHeartbeatServices.isEmpty()) {
LOG.error("Heartbeat is enabled but there are no namenodes to monitor");
}
// Periodically update the router state
this.routerHeartbeatService = new RouterHeartbeatService(this);
addService(this.routerHeartbeatService);
}
{code}
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