/**
* This returns true if the host running this process is in the list of master servers. The index
* is set in the FlumeConfiguration. If the host doesn't match, false is returned. If the
* hostnames in the master server list fail to resolve, an exception is thrown.
*/
public static boolean inferMasterHostID() throws UnknownHostException, SocketException {
String masters = FlumeConfiguration.get().getMasterServers();
String[] mtrs = masters.split(",");
int idx = NetUtils.findHostIndex(mtrs);
if (idx < 0) {
String localhost = NetUtils.localhost();
LOG.error(
"Attempted to start a master '{}' that is not " + "in the master servers list: '{}'",
localhost,
mtrs);
// localhost ips weren't in the list.
return false;
}
FlumeConfiguration.get().setInt(FlumeConfiguration.MASTER_SERVER_ID, idx);
LOG.info("Inferred master server index {}", idx);
return true;
}
