/**
* Tests an on-the-fly RPC that was scheduled for the earlier RS on the same port for openRegion.
* The region server should reject this RPC. (HBASE-9721)
*/
@Test
public void testOpenCloseRegionRPCIntendedForPreviousServer() throws Exception {
Assert.assertTrue(getRS().getRegion(regionName).isAvailable());
ServerName sn = getRS().getServerName();
ServerName earlierServerName = ServerName.valueOf(sn.getHostname(), sn.getPort(), 1);
try {
CloseRegionRequest request =
RequestConverter.buildCloseRegionRequest(earlierServerName, regionName);
getRS().getRSRpcServices().closeRegion(null, request);
Assert.fail("The closeRegion should have been rejected");
} catch (ServiceException se) {
Assert.assertTrue(se.getCause() instanceof IOException);
Assert.assertTrue(
se.getCause().getMessage().contains("This RPC was intended for a different server"));
}
// actual close
closeRegionNoZK();
try {
AdminProtos.OpenRegionRequest orr =
RequestConverter.buildOpenRegionRequest(earlierServerName, hri, null, null);
getRS().getRSRpcServices().openRegion(null, orr);
Assert.fail("The openRegion should have been rejected");
} catch (ServiceException se) {
Assert.assertTrue(se.getCause() instanceof IOException);
Assert.assertTrue(
se.getCause().getMessage().contains("This RPC was intended for a different server"));
} finally {
openRegion(HTU, getRS(), hri);
}
}
public void renderNoFlush(
@SuppressWarnings({"unused", "hiding"}) final java.io.Writer jamonWriter)
throws java.io.IOException {
// 35, 1
Collection<ServerName> backupMasters = null;
if (master.isActiveMaster()) {
ClusterStatus status = master.getClusterStatus();
backupMasters = status.getBackupMasters();
}
// 43, 1
jamonWriter.write("<table class=\"table table-striped\">\n");
// 44, 1
if ((backupMasters != null && backupMasters.size() > 0)) {
// 44, 59
jamonWriter.write(
"\n<tr>\n <th>ServerName</th>\n <th>Port</th>\n <th>Start Time</th>\n</tr>\n");
// 50, 1
ServerName[] serverNames = backupMasters.toArray(new ServerName[backupMasters.size()]);
Arrays.sort(serverNames);
for (ServerName serverName : serverNames) {
// 55, 1
jamonWriter.write("<tr>\n <td>");
// 56, 9
org.jamon.escaping.Escaping.HTML.write(
org.jamon.emit.StandardEmitter.valueOf(serverName.getHostname()), jamonWriter);
// 56, 39
jamonWriter.write("</td>\n <td>");
// 57, 9
org.jamon.escaping.Escaping.HTML.write(
org.jamon.emit.StandardEmitter.valueOf(serverName.getPort()), jamonWriter);
// 57, 35
jamonWriter.write("</td>\n <td>");
// 58, 9
org.jamon.escaping.Escaping.HTML.write(
org.jamon.emit.StandardEmitter.valueOf(new Date(serverName.getStartcode())),
jamonWriter);
// 58, 50
jamonWriter.write("</td>\n</tr>\n");
// 60, 1
}
}
// 63, 7
jamonWriter.write("\n<tr><td>Total:");
// 64, 15
org.jamon.escaping.Escaping.HTML.write(
org.jamon.emit.StandardEmitter.valueOf((backupMasters != null) ? backupMasters.size() : 0),
jamonWriter);
// 64, 71
jamonWriter.write("</td>\n</table>\n\n\n\n\n");
}
/**
* @param implementation An {@link HRegionInterface} instance; you'll likely want to pass a mocked
* HRS; can be null.
* @return Mock up a connection that returns a {@link org.apache.hadoop.conf.Configuration} when
* {@link HConnection#getConfiguration()} is called, a 'location' when {@link
* HConnection#getRegionLocation(byte[], byte[], boolean)} is called, and that returns the
* passed {@link HRegionInterface} instance when {@link
* HConnection#getHRegionConnection(String, int)} is called (Be sure call {@link
* HConnectionManager#deleteConnection(org.apache.hadoop.conf.Configuration)} when done with
* this mocked Connection.
* @throws IOException
*/
private HConnection mockConnection(final HRegionInterface implementation) throws IOException {
HConnection connection = HConnectionTestingUtility.getMockedConnection(UTIL.getConfiguration());
Mockito.doNothing().when(connection).close();
// Make it so we return any old location when asked.
final HRegionLocation anyLocation =
new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, SN.getHostname(), SN.getPort());
Mockito.when(
connection.getRegionLocation(
(byte[]) Mockito.any(), (byte[]) Mockito.any(), Mockito.anyBoolean()))
.thenReturn(anyLocation);
Mockito.when(connection.locateRegion((byte[]) Mockito.any(), (byte[]) Mockito.any()))
.thenReturn(anyLocation);
if (implementation != null) {
// If a call to getHRegionConnection, return this implementation.
Mockito.when(connection.getHRegionConnection(Mockito.anyString(), Mockito.anyInt()))
.thenReturn(implementation);
}
return connection;
}
@Test
public void testRPCException() throws Exception {
HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
TEST_UTIL.startMiniZKCluster();
Configuration conf = TEST_UTIL.getConfiguration();
conf.set(HConstants.MASTER_PORT, "0");
HMaster hm = new HMaster(conf);
ServerName sm = hm.getServerName();
InetSocketAddress isa = new InetSocketAddress(sm.getHostname(), sm.getPort());
int i = 0;
// retry the RPC a few times; we have seen SocketTimeoutExceptions if we
// try to connect too soon. Retry on SocketTimeoutException.
while (i < 20) {
try {
MasterMonitorProtocol inf =
(MasterMonitorProtocol)
HBaseClientRPC.getProxy(MasterMonitorProtocol.class, isa, conf, 100 * 10);
inf.isMasterRunning(null, IsMasterRunningRequest.getDefaultInstance());
fail();
} catch (ServiceException ex) {
IOException ie = ProtobufUtil.getRemoteException(ex);
if (!(ie instanceof SocketTimeoutException)) {
if (ie.getMessage()
.startsWith(
"org.apache.hadoop.hbase.ipc.ServerNotRunningYetException: Server is not running yet")) {
return;
}
} else {
System.err.println("Got SocketTimeoutException. Will retry. ");
}
} catch (Throwable t) {
fail("Unexpected throwable: " + t);
}
Thread.sleep(100);
i++;
}
fail();
}
/**
* Calls {@link #getMockedConnection(Configuration)} and then mocks a few more of the popular
* {@link HConnection} methods so they do 'normal' operation (see return doc below for list). Be
* sure to shutdown the connection when done by calling {@link
* HConnectionManager#deleteConnection(Configuration, boolean)} else it will stick around; this is
* probably not what you want.
*
* @param implementation An {@link HRegionInterface} instance; you'll likely want to pass a mocked
* HRS; can be null.
* @param conf Configuration to use
* @param implementation An HRegionInterface; can be null but is usually itself a mock.
* @param sn ServerName to include in the region location returned by this <code>implementation
* </code>
* @param hri HRegionInfo to include in the location returned when getRegionLocation is called on
* the mocked connection
* @return Mock up a connection that returns a {@link Configuration} when {@link
* HConnection#getConfiguration()} is called, a 'location' when {@link
* HConnection#getRegionLocation(byte[], byte[], boolean)} is called, and that returns the
* passed {@link HRegionInterface} instance when {@link
* HConnection#getHRegionConnection(String, int)} is called (Be sure call {@link
* HConnectionManager#deleteConnection(org.apache.hadoop.conf.Configuration, boolean)} when
* done with this mocked Connection.
* @throws IOException
*/
public static HConnection getMockedConnectionAndDecorate(
final Configuration conf,
final HRegionInterface implementation,
final ServerName sn,
final HRegionInfo hri)
throws IOException {
HConnection c = HConnectionTestingUtility.getMockedConnection(conf);
Mockito.doNothing().when(c).close();
// Make it so we return a particular location when asked.
final HRegionLocation loc = new HRegionLocation(hri, sn.getHostname(), sn.getPort());
Mockito.when(
c.getRegionLocation(
(byte[]) Mockito.any(), (byte[]) Mockito.any(), Mockito.anyBoolean()))
.thenReturn(loc);
Mockito.when(c.locateRegion((byte[]) Mockito.any(), (byte[]) Mockito.any())).thenReturn(loc);
if (implementation != null) {
// If a call to getHRegionConnection, return this implementation.
Mockito.when(c.getHRegionConnection(Mockito.anyString(), Mockito.anyInt()))
.thenReturn(implementation);
}
return c;
}
/**
* @param sn ServerName to get a connection against.
* @return The HRegionInterface we got when we connected to <code>sn</code> May have come from
* cache, may not be good, may have been setup by this invocation, or may be null.
* @throws IOException
*/
private HRegionInterface getCachedConnection(ServerName sn) throws IOException {
if (sn == null) {
return null;
}
HRegionInterface protocol = null;
try {
protocol = connection.getHRegionConnection(sn.getHostname(), sn.getPort());
} catch (RetriesExhaustedException e) {
if (e.getCause() != null && e.getCause() instanceof ConnectException) {
// Catch this; presume it means the cached connection has gone bad.
} else {
throw e;
}
} catch (SocketTimeoutException e) {
LOG.debug("Timed out connecting to " + sn);
} catch (NoRouteToHostException e) {
LOG.debug("Connecting to " + sn, e);
} catch (SocketException e) {
LOG.debug("Exception connecting to " + sn);
} catch (UnknownHostException e) {
LOG.debug("Unknown host exception connecting to " + sn);
} catch (IOException ioe) {
Throwable cause = ioe.getCause();
if (ioe instanceof ConnectException) {
// Catch. Connect refused.
} else if (cause != null && cause instanceof EOFException) {
// Catch. Other end disconnected us.
} else if (cause != null
&& cause.getMessage() != null
&& cause.getMessage().toLowerCase().contains("connection reset")) {
// Catch. Connection reset.
} else {
throw ioe;
}
}
return protocol;
}
/**
* Generate the assignment plan for the existing table
*
* @param tableName
* @param assignmentSnapshot
* @param regionLocalityMap
* @param plan
* @param munkresForSecondaryAndTertiary if set on true the assignment plan for the tertiary and
* secondary will be generated with Munkres algorithm, otherwise will be generated using
* placeSecondaryAndTertiaryRS
* @throws IOException
*/
private void genAssignmentPlan(
TableName tableName,
SnapshotOfRegionAssignmentFromMeta assignmentSnapshot,
Map<String, Map<String, Float>> regionLocalityMap,
FavoredNodesPlan plan,
boolean munkresForSecondaryAndTertiary)
throws IOException {
// Get the all the regions for the current table
List<HRegionInfo> regions = assignmentSnapshot.getTableToRegionMap().get(tableName);
int numRegions = regions.size();
// Get the current assignment map
Map<HRegionInfo, ServerName> currentAssignmentMap =
assignmentSnapshot.getRegionToRegionServerMap();
// Get the all the region servers
List<ServerName> servers = new ArrayList<ServerName>();
try (Admin admin = this.connection.getAdmin()) {
servers.addAll(admin.getClusterStatus().getServers());
}
LOG.info(
"Start to generate assignment plan for "
+ numRegions
+ " regions from table "
+ tableName
+ " with "
+ servers.size()
+ " region servers");
int slotsPerServer = (int) Math.ceil((float) numRegions / servers.size());
int regionSlots = slotsPerServer * servers.size();
// Compute the primary, secondary and tertiary costs for each region/server
// pair. These costs are based only on node locality and rack locality, and
// will be modified later.
float[][] primaryCost = new float[numRegions][regionSlots];
float[][] secondaryCost = new float[numRegions][regionSlots];
float[][] tertiaryCost = new float[numRegions][regionSlots];
if (this.enforceLocality && regionLocalityMap != null) {
// Transform the locality mapping into a 2D array, assuming that any
// unspecified locality value is 0.
float[][] localityPerServer = new float[numRegions][regionSlots];
for (int i = 0; i < numRegions; i++) {
Map<String, Float> serverLocalityMap =
regionLocalityMap.get(regions.get(i).getEncodedName());
if (serverLocalityMap == null) {
continue;
}
for (int j = 0; j < servers.size(); j++) {
String serverName = servers.get(j).getHostname();
if (serverName == null) {
continue;
}
Float locality = serverLocalityMap.get(serverName);
if (locality == null) {
continue;
}
for (int k = 0; k < slotsPerServer; k++) {
// If we can't find the locality of a region to a server, which occurs
// because locality is only reported for servers which have some
// blocks of a region local, then the locality for that pair is 0.
localityPerServer[i][j * slotsPerServer + k] = locality.floatValue();
}
}
}
// Compute the total rack locality for each region in each rack. The total
// rack locality is the sum of the localities of a region on all servers in
// a rack.
Map<String, Map<HRegionInfo, Float>> rackRegionLocality =
new HashMap<String, Map<HRegionInfo, Float>>();
for (int i = 0; i < numRegions; i++) {
HRegionInfo region = regions.get(i);
for (int j = 0; j < regionSlots; j += slotsPerServer) {
String rack = rackManager.getRack(servers.get(j / slotsPerServer));
Map<HRegionInfo, Float> rackLocality = rackRegionLocality.get(rack);
if (rackLocality == null) {
rackLocality = new HashMap<HRegionInfo, Float>();
rackRegionLocality.put(rack, rackLocality);
}
Float localityObj = rackLocality.get(region);
float locality = localityObj == null ? 0 : localityObj.floatValue();
locality += localityPerServer[i][j];
rackLocality.put(region, locality);
}
}
for (int i = 0; i < numRegions; i++) {
for (int j = 0; j < regionSlots; j++) {
String rack = rackManager.getRack(servers.get(j / slotsPerServer));
Float totalRackLocalityObj = rackRegionLocality.get(rack).get(regions.get(i));
float totalRackLocality =
totalRackLocalityObj == null ? 0 : totalRackLocalityObj.floatValue();
// Primary cost aims to favor servers with high node locality and low
// rack locality, so that secondaries and tertiaries can be chosen for
// nodes with high rack locality. This might give primaries with
// slightly less locality at first compared to a cost which only
// considers the node locality, but should be better in the long run.
primaryCost[i][j] = 1 - (2 * localityPerServer[i][j] - totalRackLocality);
// Secondary cost aims to favor servers with high node locality and high
// rack locality since the tertiary will be chosen from the same rack as
// the secondary. This could be negative, but that is okay.
secondaryCost[i][j] = 2 - (localityPerServer[i][j] + totalRackLocality);
// Tertiary cost is only concerned with the node locality. It will later
// be restricted to only hosts on the same rack as the secondary.
tertiaryCost[i][j] = 1 - localityPerServer[i][j];
}
}
}
if (this.enforceMinAssignmentMove && currentAssignmentMap != null) {
// We want to minimize the number of regions which move as the result of a
// new assignment. Therefore, slightly penalize any placement which is for
// a host that is not currently serving the region.
for (int i = 0; i < numRegions; i++) {
for (int j = 0; j < servers.size(); j++) {
ServerName currentAddress = currentAssignmentMap.get(regions.get(i));
if (currentAddress != null && !currentAddress.equals(servers.get(j))) {
for (int k = 0; k < slotsPerServer; k++) {
primaryCost[i][j * slotsPerServer + k] += NOT_CURRENT_HOST_PENALTY;
}
}
}
}
}
// Artificially increase cost of last slot of each server to evenly
// distribute the slop, otherwise there will be a few servers with too few
// regions and many servers with the max number of regions.
for (int i = 0; i < numRegions; i++) {
for (int j = 0; j < regionSlots; j += slotsPerServer) {
primaryCost[i][j] += LAST_SLOT_COST_PENALTY;
secondaryCost[i][j] += LAST_SLOT_COST_PENALTY;
tertiaryCost[i][j] += LAST_SLOT_COST_PENALTY;
}
}
RandomizedMatrix randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);
primaryCost = randomizedMatrix.transform(primaryCost);
int[] primaryAssignment = new MunkresAssignment(primaryCost).solve();
primaryAssignment = randomizedMatrix.invertIndices(primaryAssignment);
// Modify the secondary and tertiary costs for each region/server pair to
// prevent a region from being assigned to the same rack for both primary
// and either one of secondary or tertiary.
for (int i = 0; i < numRegions; i++) {
int slot = primaryAssignment[i];
String rack = rackManager.getRack(servers.get(slot / slotsPerServer));
for (int k = 0; k < servers.size(); k++) {
if (!rackManager.getRack(servers.get(k)).equals(rack)) {
continue;
}
if (k == slot / slotsPerServer) {
// Same node, do not place secondary or tertiary here ever.
for (int m = 0; m < slotsPerServer; m++) {
secondaryCost[i][k * slotsPerServer + m] = MAX_COST;
tertiaryCost[i][k * slotsPerServer + m] = MAX_COST;
}
} else {
// Same rack, do not place secondary or tertiary here if possible.
for (int m = 0; m < slotsPerServer; m++) {
secondaryCost[i][k * slotsPerServer + m] = AVOID_COST;
tertiaryCost[i][k * slotsPerServer + m] = AVOID_COST;
}
}
}
}
if (munkresForSecondaryAndTertiary) {
randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);
secondaryCost = randomizedMatrix.transform(secondaryCost);
int[] secondaryAssignment = new MunkresAssignment(secondaryCost).solve();
secondaryAssignment = randomizedMatrix.invertIndices(secondaryAssignment);
// Modify the tertiary costs for each region/server pair to ensure that a
// region is assigned to a tertiary server on the same rack as its secondary
// server, but not the same server in that rack.
for (int i = 0; i < numRegions; i++) {
int slot = secondaryAssignment[i];
String rack = rackManager.getRack(servers.get(slot / slotsPerServer));
for (int k = 0; k < servers.size(); k++) {
if (k == slot / slotsPerServer) {
// Same node, do not place tertiary here ever.
for (int m = 0; m < slotsPerServer; m++) {
tertiaryCost[i][k * slotsPerServer + m] = MAX_COST;
}
} else {
if (rackManager.getRack(servers.get(k)).equals(rack)) {
continue;
}
// Different rack, do not place tertiary here if possible.
for (int m = 0; m < slotsPerServer; m++) {
tertiaryCost[i][k * slotsPerServer + m] = AVOID_COST;
}
}
}
}
randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);
tertiaryCost = randomizedMatrix.transform(tertiaryCost);
int[] tertiaryAssignment = new MunkresAssignment(tertiaryCost).solve();
tertiaryAssignment = randomizedMatrix.invertIndices(tertiaryAssignment);
for (int i = 0; i < numRegions; i++) {
List<ServerName> favoredServers =
new ArrayList<ServerName>(FavoredNodeAssignmentHelper.FAVORED_NODES_NUM);
ServerName s = servers.get(primaryAssignment[i] / slotsPerServer);
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
s = servers.get(secondaryAssignment[i] / slotsPerServer);
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
s = servers.get(tertiaryAssignment[i] / slotsPerServer);
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
// Update the assignment plan
plan.updateAssignmentPlan(regions.get(i), favoredServers);
}
LOG.info(
"Generated the assignment plan for "
+ numRegions
+ " regions from table "
+ tableName
+ " with "
+ servers.size()
+ " region servers");
LOG.info("Assignment plan for secondary and tertiary generated " + "using MunkresAssignment");
} else {
Map<HRegionInfo, ServerName> primaryRSMap = new HashMap<HRegionInfo, ServerName>();
for (int i = 0; i < numRegions; i++) {
primaryRSMap.put(regions.get(i), servers.get(primaryAssignment[i] / slotsPerServer));
}
FavoredNodeAssignmentHelper favoredNodeHelper =
new FavoredNodeAssignmentHelper(servers, conf);
favoredNodeHelper.initialize();
Map<HRegionInfo, ServerName[]> secondaryAndTertiaryMap =
favoredNodeHelper.placeSecondaryAndTertiaryWithRestrictions(primaryRSMap);
for (int i = 0; i < numRegions; i++) {
List<ServerName> favoredServers =
new ArrayList<ServerName>(FavoredNodeAssignmentHelper.FAVORED_NODES_NUM);
HRegionInfo currentRegion = regions.get(i);
ServerName s = primaryRSMap.get(currentRegion);
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
ServerName[] secondaryAndTertiary = secondaryAndTertiaryMap.get(currentRegion);
s = secondaryAndTertiary[0];
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
s = secondaryAndTertiary[1];
favoredServers.add(
ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));
// Update the assignment plan
plan.updateAssignmentPlan(regions.get(i), favoredServers);
}
LOG.info(
"Generated the assignment plan for "
+ numRegions
+ " regions from table "
+ tableName
+ " with "
+ servers.size()
+ " region servers");
LOG.info(
"Assignment plan for secondary and tertiary generated "
+ "using placeSecondaryAndTertiaryWithRestrictions method");
}
}
public void printStats() throws IOException {
Admin admin = connection.getAdmin();
ClusterStatus status =
admin.getClusterStatus(); // co ClusterStatusExample-1-GetStatus Get the cluster status.
System.out.println("Cluster Status:\n--------------");
System.out.println("HBase Version: " + status.getHBaseVersion());
System.out.println("Version: " + status.getVersion());
System.out.println("Cluster ID: " + status.getClusterId());
System.out.println("Master: " + status.getMaster());
System.out.println("No. Backup Masters: " + status.getBackupMastersSize());
System.out.println("Backup Masters: " + status.getBackupMasters());
System.out.println("No. Live Servers: " + status.getServersSize());
System.out.println("Servers: " + status.getServers());
System.out.println("No. Dead Servers: " + status.getDeadServers());
System.out.println("Dead Servers: " + status.getDeadServerNames());
System.out.println("No. Regions: " + status.getRegionsCount());
System.out.println("Regions in Transition: " + status.getRegionsInTransition());
System.out.println("No. Requests: " + status.getRequestsCount());
System.out.println("Avg Load: " + status.getAverageLoad());
System.out.println("Balancer On: " + status.getBalancerOn());
System.out.println("Is Balancer On: " + status.isBalancerOn());
System.out.println("Master Coprocessors: " + Arrays.asList(status.getMasterCoprocessors()));
System.out.println("\nServer Info:\n--------------");
for (ServerName server :
status
.getServers()) { // co ClusterStatusExample-2-ServerInfo Iterate over the included
// server instances.
System.out.println("Hostname: " + server.getHostname());
System.out.println("Host and Port: " + server.getHostAndPort());
System.out.println("Server Name: " + server.getServerName());
System.out.println("RPC Port: " + server.getPort());
System.out.println("Start Code: " + server.getStartcode());
ServerLoad load =
status.getLoad(
server); // co ClusterStatusExample-3-ServerLoad Retrieve the load details for the
// current server.
System.out.println("\nServer Load:\n--------------");
System.out.println("Info Port: " + load.getInfoServerPort());
System.out.println("Load: " + load.getLoad());
System.out.println("Max Heap (MB): " + load.getMaxHeapMB());
System.out.println("Used Heap (MB): " + load.getUsedHeapMB());
System.out.println("Memstore Size (MB): " + load.getMemstoreSizeInMB());
System.out.println("No. Regions: " + load.getNumberOfRegions());
System.out.println("No. Requests: " + load.getNumberOfRequests());
System.out.println("Total No. Requests: " + load.getTotalNumberOfRequests());
System.out.println("No. Requests per Sec: " + load.getRequestsPerSecond());
System.out.println("No. Read Requests: " + load.getReadRequestsCount());
System.out.println("No. Write Requests: " + load.getWriteRequestsCount());
System.out.println("No. Stores: " + load.getStores());
System.out.println("Store Size Uncompressed (MB): " + load.getStoreUncompressedSizeMB());
System.out.println("No. Storefiles: " + load.getStorefiles());
System.out.println("Storefile Size (MB): " + load.getStorefileSizeInMB());
System.out.println("Storefile Index Size (MB): " + load.getStorefileIndexSizeInMB());
System.out.println("Root Index Size: " + load.getRootIndexSizeKB());
System.out.println("Total Bloom Size: " + load.getTotalStaticBloomSizeKB());
System.out.println("Total Index Size: " + load.getTotalStaticIndexSizeKB());
System.out.println("Current Compacted Cells: " + load.getCurrentCompactedKVs());
System.out.println("Total Compacting Cells: " + load.getTotalCompactingKVs());
System.out.println("Coprocessors1: " + Arrays.asList(load.getRegionServerCoprocessors()));
System.out.println("Coprocessors2: " + Arrays.asList(load.getRsCoprocessors()));
System.out.println("Replication Load Sink: " + load.getReplicationLoadSink());
System.out.println("Replication Load Source: " + load.getReplicationLoadSourceList());
System.out.println("\nRegion Load:\n--------------");
for (Map.Entry<byte[], RegionLoad>
entry : // co ClusterStatusExample-4-Regions Iterate over the region details of the
// current server.
load.getRegionsLoad().entrySet()) {
System.out.println("Region: " + Bytes.toStringBinary(entry.getKey()));
RegionLoad regionLoad =
entry
.getValue(); // co ClusterStatusExample-5-RegionLoad Get the load details for the
// current region.
System.out.println("Name: " + Bytes.toStringBinary(regionLoad.getName()));
System.out.println("Name (as String): " + regionLoad.getNameAsString());
System.out.println("No. Requests: " + regionLoad.getRequestsCount());
System.out.println("No. Read Requests: " + regionLoad.getReadRequestsCount());
System.out.println("No. Write Requests: " + regionLoad.getWriteRequestsCount());
System.out.println("No. Stores: " + regionLoad.getStores());
System.out.println("No. Storefiles: " + regionLoad.getStorefiles());
System.out.println("Data Locality: " + regionLoad.getDataLocality());
System.out.println("Storefile Size (MB): " + regionLoad.getStorefileSizeMB());
System.out.println("Storefile Index Size (MB): " + regionLoad.getStorefileIndexSizeMB());
System.out.println("Memstore Size (MB): " + regionLoad.getMemStoreSizeMB());
System.out.println("Root Index Size: " + regionLoad.getRootIndexSizeKB());
System.out.println("Total Bloom Size: " + regionLoad.getTotalStaticBloomSizeKB());
System.out.println("Total Index Size: " + regionLoad.getTotalStaticIndexSizeKB());
System.out.println("Current Compacted Cells: " + regionLoad.getCurrentCompactedKVs());
System.out.println("Total Compacting Cells: " + regionLoad.getTotalCompactingKVs());
System.out.println();
}
}
}
/**
* Test that MetaReader will ride over server throwing "Server not running" IOEs.
*
* @see https://issues.apache.org/jira/browse/HBASE-3446
* @throws IOException
* @throws InterruptedException
*/
@Test
public void testRideOverServerNotRunning() throws IOException, InterruptedException {
// Need a zk watcher.
ZooKeeperWatcher zkw =
new ZooKeeperWatcher(
UTIL.getConfiguration(), this.getClass().getSimpleName(), ABORTABLE, true);
// This is a servername we use in a few places below.
ServerName sn = new ServerName("example.com", 1234, System.currentTimeMillis());
HConnection connection = null;
CatalogTracker ct = null;
try {
// Mock an HRegionInterface. Our mock implementation will fail a few
// times when we go to open a scanner.
final HRegionInterface implementation = Mockito.mock(HRegionInterface.class);
// When openScanner called throw IOE 'Server not running' a few times
// before we return a scanner id. Whats WEIRD is that these
// exceptions do not show in the log because they are caught and only
// printed if we FAIL. We eventually succeed after retry so these don't
// show. We will know if they happened or not because we will ask
// mockito at the end of this test to verify that openscanner was indeed
// called the wanted number of times.
final long scannerid = 123L;
Mockito.when(implementation.openScanner((byte[]) Mockito.any(), (Scan) Mockito.any()))
.thenThrow(new IOException("Server not running (1 of 3)"))
.thenThrow(new IOException("Server not running (2 of 3)"))
.thenThrow(new IOException("Server not running (3 of 3)"))
.thenReturn(scannerid);
// Make it so a verifiable answer comes back when next is called. Return
// the verifiable answer and then a null so we stop scanning. Our
// verifiable answer is something that looks like a row in META with
// a server and startcode that is that of the above defined servername.
List<KeyValue> kvs = new ArrayList<KeyValue>();
final byte[] rowToVerify = Bytes.toBytes("rowToVerify");
kvs.add(
new KeyValue(
rowToVerify,
HConstants.CATALOG_FAMILY,
HConstants.REGIONINFO_QUALIFIER,
Writables.getBytes(HRegionInfo.FIRST_META_REGIONINFO)));
kvs.add(
new KeyValue(
rowToVerify,
HConstants.CATALOG_FAMILY,
HConstants.SERVER_QUALIFIER,
Bytes.toBytes(sn.getHostAndPort())));
kvs.add(
new KeyValue(
rowToVerify,
HConstants.CATALOG_FAMILY,
HConstants.STARTCODE_QUALIFIER,
Bytes.toBytes(sn.getStartcode())));
final Result[] result = new Result[] {new Result(kvs)};
Mockito.when(implementation.next(Mockito.anyLong(), Mockito.anyInt()))
.thenReturn(result)
.thenReturn(null);
// Associate a spied-upon HConnection with UTIL.getConfiguration. Need
// to shove this in here first so it gets picked up all over; e.g. by
// HTable.
connection = HConnectionTestingUtility.getSpiedConnection(UTIL.getConfiguration());
// Fix the location lookup so it 'works' though no network. First
// make an 'any location' object.
final HRegionLocation anyLocation =
new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, sn.getHostname(), sn.getPort());
// Return the any location object when locateRegion is called in HTable
// constructor and when its called by ServerCallable (it uses getRegionLocation).
// The ugly format below comes of 'Important gotcha on spying real objects!' from
// http://mockito.googlecode.com/svn/branches/1.6/javadoc/org/mockito/Mockito.html
Mockito.doReturn(anyLocation)
.when(connection)
.locateRegion((byte[]) Mockito.any(), (byte[]) Mockito.any());
Mockito.doReturn(anyLocation)
.when(connection)
.getRegionLocation((byte[]) Mockito.any(), (byte[]) Mockito.any(), Mockito.anyBoolean());
// Now shove our HRI implementation into the spied-upon connection.
Mockito.doReturn(implementation)
.when(connection)
.getHRegionConnection(Mockito.anyString(), Mockito.anyInt());
// Now start up the catalogtracker with our doctored Connection.
ct = new CatalogTracker(zkw, null, connection, ABORTABLE, 0);
ct.start();
// Scan meta for user tables and verify we got back expected answer.
NavigableMap<HRegionInfo, Result> hris = MetaReader.getServerUserRegions(ct, sn);
assertTrue(hris.size() == 1);
assertTrue(hris.firstEntry().getKey().equals(HRegionInfo.FIRST_META_REGIONINFO));
assertTrue(Bytes.equals(rowToVerify, hris.firstEntry().getValue().getRow()));
// Finally verify that openscanner was called four times -- three times
// with exception and then on 4th attempt we succeed.
Mockito.verify(implementation, Mockito.times(4))
.openScanner((byte[]) Mockito.any(), (Scan) Mockito.any());
} finally {
if (ct != null) ct.stop();
HConnectionManager.deleteConnection(UTIL.getConfiguration(), true);
zkw.close();
}
}
/** This tests retaining assignments on a cluster restart */
@Test(timeout = 300000)
public void testRetainAssignmentOnRestart() throws Exception {
UTIL.startMiniCluster(2);
while (!UTIL.getMiniHBaseCluster().getMaster().isInitialized()) {
Threads.sleep(1);
}
// Turn off balancer
UTIL.getMiniHBaseCluster().getMaster().getMasterRpcServices().synchronousBalanceSwitch(false);
LOG.info("\n\nCreating tables");
for (byte[] TABLE : TABLES) {
UTIL.createTable(TABLE, FAMILY);
}
for (byte[] TABLE : TABLES) {
UTIL.waitTableEnabled(TABLE);
}
HMaster master = UTIL.getMiniHBaseCluster().getMaster();
UTIL.waitUntilNoRegionsInTransition(120000);
// We don't have to use SnapshotOfRegionAssignmentFromMeta.
// We use it here because AM used to use it to load all user region placements
SnapshotOfRegionAssignmentFromMeta snapshot =
new SnapshotOfRegionAssignmentFromMeta(master.getShortCircuitConnection());
snapshot.initialize();
Map<HRegionInfo, ServerName> regionToRegionServerMap = snapshot.getRegionToRegionServerMap();
MiniHBaseCluster cluster = UTIL.getHBaseCluster();
List<JVMClusterUtil.RegionServerThread> threads = cluster.getLiveRegionServerThreads();
assertEquals(2, threads.size());
int[] rsPorts = new int[3];
for (int i = 0; i < 2; i++) {
rsPorts[i] = threads.get(i).getRegionServer().getServerName().getPort();
}
rsPorts[2] = cluster.getMaster().getServerName().getPort();
for (ServerName serverName : regionToRegionServerMap.values()) {
boolean found = false; // Test only, no need to optimize
for (int k = 0; k < 3 && !found; k++) {
found = serverName.getPort() == rsPorts[k];
}
assertTrue(found);
}
LOG.info("\n\nShutting down HBase cluster");
cluster.shutdown();
cluster.waitUntilShutDown();
LOG.info("\n\nSleeping a bit");
Thread.sleep(2000);
LOG.info("\n\nStarting cluster the second time with the same ports");
try {
cluster.getConf().setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 4);
master = cluster.startMaster().getMaster();
for (int i = 0; i < 3; i++) {
cluster.getConf().setInt(HConstants.REGIONSERVER_PORT, rsPorts[i]);
cluster.startRegionServer();
}
} finally {
// Reset region server port so as not to conflict with other tests
cluster.getConf().setInt(HConstants.REGIONSERVER_PORT, 0);
cluster.getConf().setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 2);
}
// Make sure live regionservers are on the same host/port
List<ServerName> localServers = master.getServerManager().getOnlineServersList();
assertEquals(4, localServers.size());
for (int i = 0; i < 3; i++) {
boolean found = false;
for (ServerName serverName : localServers) {
if (serverName.getPort() == rsPorts[i]) {
found = true;
break;
}
}
assertTrue(found);
}
// Wait till master is initialized and all regions are assigned
RegionStates regionStates = master.getAssignmentManager().getRegionStates();
int expectedRegions = regionToRegionServerMap.size() + 1;
while (!master.isInitialized()
|| regionStates.getRegionAssignments().size() != expectedRegions) {
Threads.sleep(100);
}
snapshot = new SnapshotOfRegionAssignmentFromMeta(master.getShortCircuitConnection());
snapshot.initialize();
Map<HRegionInfo, ServerName> newRegionToRegionServerMap = snapshot.getRegionToRegionServerMap();
assertEquals(regionToRegionServerMap.size(), newRegionToRegionServerMap.size());
for (Map.Entry<HRegionInfo, ServerName> entry : newRegionToRegionServerMap.entrySet()) {
if (TableName.NAMESPACE_TABLE_NAME.equals(entry.getKey().getTable())) continue;
ServerName oldServer = regionToRegionServerMap.get(entry.getKey());
ServerName currentServer = entry.getValue();
assertEquals(oldServer.getHostAndPort(), currentServer.getHostAndPort());
assertNotEquals(oldServer.getStartcode(), currentServer.getStartcode());
}
}
