* @throws KeeperException
*/
@Test public void testYankingRegionFromUnderIt()
throws IOException, NodeExistsException, KeeperException {
final Server server = new MockServer(HTU);
final RegionServerServices rss = HTU.createMockRegionServerService();
HTableDescriptor htd = TEST_HTD;
final HRegionInfo hri = TEST_HRI;
HRegion region =
HRegion.createHRegion(hri, HTU.getDataTestDir(), HTU
.getConfiguration(), htd);
assertNotNull(region);
try {
ZkCoordinatedStateManager csm = new ZkCoordinatedStateManager();
csm.initialize(server);
csm.start();
ZkOpenRegionCoordination.ZkOpenRegionDetails zkCrd =
new ZkOpenRegionCoordination.ZkOpenRegionDetails();
zkCrd.setServerName(server.getServerName());
OpenRegionHandler handler = new OpenRegionHandler(server, rss, hri,
htd, csm.getOpenRegionCoordination(), zkCrd) {
HRegion openRegion() {
// Open region first, then remove znode as though it'd been hijacked.
HRegion region = super.openRegion();
// Don't actually open region BUT remove the znode as though it'd
// been hijacked on us.
ZooKeeperWatcher zkw = this.server.getZooKeeper();
String node = ZKAssign.getNodeName(zkw, hri.getEncodedName());
try {
ZKUtil.deleteNodeFailSilent(zkw, node);
} catch (KeeperException e) {
throw new RuntimeException("Ugh failed delete of " + node, e);
}
return region;
}
};
rss.getRegionsInTransitionInRS().put(
hri.getEncodedNameAsBytes(), Boolean.TRUE);
// Call process without first creating OFFLINE region in zk, see if
// exception or just quiet return (expected).
handler.process();
rss.getRegionsInTransitionInRS().put(
hri.getEncodedNameAsBytes(), Boolean.TRUE);
ZKAssign.createNodeOffline(server.getZooKeeper(), hri, server.getServerName());
// Call process again but this time yank the zk znode out from under it
// post OPENING; again will expect it to come back w/o NPE or exception.
handler.process();