}
static String getUpgradeStatusText(FSNamesystem fsn) {
String statusText = "";
try {
UpgradeStatusReport status = fsn
.distributedUpgradeProgress(UpgradeAction.GET_STATUS);
statusText = (status == null ? "There are no upgrades in progress."
: status.getStatusText(false));
} catch (IOException e) {
statusText = "Upgrade status unknown.";
}
return statusText;
}