/**
* Blocks until there is at least one node in regions in transition.
*
* <p>Used in testing only.
*
* @param zkw zk reference
* @throws KeeperException
* @throws InterruptedException
*/
public static void blockUntilRIT(ZooKeeperWatcher zkw)
throws KeeperException, InterruptedException {
while (!ZKUtil.nodeHasChildren(zkw, zkw.assignmentZNode)) {
List<String> znodes = ZKUtil.listChildrenAndWatchForNewChildren(zkw, zkw.assignmentZNode);
if (znodes == null || znodes.isEmpty()) {
LOG.debug("No RIT in ZK");
}
Thread.sleep(100);
}
}
/**
* Blocks until there are no node in regions in transition.
*
* <p>Used in testing only.
*
* @param zkw zk reference
* @throws KeeperException
* @throws InterruptedException
*/
public static void blockUntilNoRIT(ZooKeeperWatcher zkw)
throws KeeperException, InterruptedException {
while (ZKUtil.nodeHasChildren(zkw, zkw.assignmentZNode)) {
List<String> znodes = ZKUtil.listChildrenAndWatchForNewChildren(zkw, zkw.assignmentZNode);
if (znodes != null && !znodes.isEmpty()) {
for (String znode : znodes) {
LOG.debug("ZK RIT -> " + znode);
}
}
Thread.sleep(100);
}
}