/**
* Test if the region can be closed properly
*
* @throws IOException
* @throws NodeExistsException
* @throws KeeperException
* @throws org.apache.hadoop.hbase.exceptions.DeserializationException
*/
@Test
public void testCloseRegion()
throws IOException, NodeExistsException, KeeperException, DeserializationException {
final Server server = new MockServer(HTU);
final RegionServerServices rss = HTU.createMockRegionServerService();
HTableDescriptor htd = TEST_HTD;
HRegionInfo hri = TEST_HRI;
// open a region first so that it can be closed later
OpenRegion(server, rss, htd, hri);
// close the region
// Create it CLOSING, which is what Master set before sending CLOSE RPC
int versionOfClosingNode =
ZKAssign.createNodeClosing(server.getZooKeeper(), hri, server.getServerName());
// The CloseRegionHandler will validate the expected version
// Given it is set to correct versionOfClosingNode,
// CloseRegionHandlerit should be RS_ZK_REGION_CLOSED
CloseRegionHandler handler =
new CloseRegionHandler(server, rss, hri, false, true, versionOfClosingNode);
handler.process();
// Handler should have transitioned it to RS_ZK_REGION_CLOSED
RegionTransition rt =
RegionTransition.parseFrom(ZKAssign.getData(server.getZooKeeper(), hri.getEncodedName()));
assertTrue(rt.getEventType().equals(EventType.RS_ZK_REGION_CLOSED));
}
private void OpenRegion(
Server server, RegionServerServices rss, HTableDescriptor htd, HRegionInfo hri)
throws IOException, NodeExistsException, KeeperException, DeserializationException {
// Create it OFFLINE node, which is what Master set before sending OPEN RPC
ZKAssign.createNodeOffline(server.getZooKeeper(), hri, server.getServerName());
OpenRegionHandler openHandler = new OpenRegionHandler(server, rss, hri, htd);
rss.getRegionsInTransitionInRS().put(hri.getEncodedNameAsBytes(), Boolean.TRUE);
openHandler.process();
// This parse is not used?
RegionTransition.parseFrom(ZKAssign.getData(server.getZooKeeper(), hri.getEncodedName()));
// delete the node, which is what Master do after the region is opened
ZKAssign.deleteNode(
server.getZooKeeper(),
hri.getEncodedName(),
EventType.RS_ZK_REGION_OPENED,
server.getServerName());
}