本文整理汇总了Java中org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo.getSource方法的典型用法代码示例。如果您正苦于以下问题：Java StateChangeRequestInfo.getSource方法的具体用法？Java StateChangeRequestInfo.getSource怎么用？Java StateChangeRequestInfo.getSource使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo的用法示例。
在下文中一共展示了StateChangeRequestInfo.getSource方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: checkHaStateChange
import org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo; //导入方法依赖的package包/类
/**
* Check that a request to change this node's HA state is valid.
* In particular, verifies that, if auto failover is enabled, non-forced
* requests from the HAAdmin CLI are rejected, and vice versa.
*
* @param req the request to check
* @throws AccessControlException if the request is disallowed
*/
void checkHaStateChange(StateChangeRequestInfo req)
throws AccessControlException {
boolean autoHaEnabled = conf.getBoolean(DFS_HA_AUTO_FAILOVER_ENABLED_KEY,
DFS_HA_AUTO_FAILOVER_ENABLED_DEFAULT);
switch (req.getSource()) {
case REQUEST_BY_USER:
if (autoHaEnabled) {
throw new AccessControlException(
"Manual HA control for this NameNode is disallowed, because " +
"automatic HA is enabled.");
}
break;
case REQUEST_BY_USER_FORCED:
if (autoHaEnabled) {
LOG.warn("Allowing manual HA control from " +
Server.getRemoteAddress() +
" even though automatic HA is enabled, because the user " +
"specified the force flag");
}
break;
case REQUEST_BY_ZKFC:
if (!autoHaEnabled) {
throw new AccessControlException(
"Request from ZK failover controller at " +
Server.getRemoteAddress() + " denied since automatic HA " +
"is not enabled");
}
break;
}
}