HBASE-11689 Track meta in transition (Andrey Stepachev and Jimmy Xiang)

This commit is contained in:
Jimmy Xiang 2014-08-28 10:23:31 -07:00
parent 2cd45eb9a0
commit b7f7514762
15 changed files with 707 additions and 378 deletions

View File

@ -18,21 +18,21 @@
*/
package org.apache.hadoop.hbase;
import com.google.common.net.InetAddresses;
import com.google.protobuf.InvalidProtocolBufferException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.MetaRegionServer;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.util.Addressing;
import org.apache.hadoop.hbase.util.Bytes;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import com.google.common.net.InetAddresses;
import com.google.protobuf.InvalidProtocolBufferException;
/**
* Instance of an HBase ServerName.
@ -54,6 +54,8 @@ import java.util.regex.Pattern;
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class ServerName implements Comparable<ServerName>, Serializable {
private static final long serialVersionUID = 1367463982557264981L;
/**
* Version for this class.
* Its a short rather than a byte so I can for sure distinguish between this
@ -370,9 +372,9 @@ public class ServerName implements Comparable<ServerName>, Serializable {
if (ProtobufUtil.isPBMagicPrefix(data)) {
int prefixLen = ProtobufUtil.lengthOfPBMagic();
try {
MetaRegionServer rss =
MetaRegionServer.PARSER.parseFrom(data, prefixLen, data.length - prefixLen);
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName sn = rss.getServer();
ZooKeeperProtos.Master rss =
ZooKeeperProtos.Master.PARSER.parseFrom(data, prefixLen, data.length - prefixLen);
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName sn = rss.getMaster();
return valueOf(sn.getHostName(), sn.getPort(), sn.getStartCode());
} catch (InvalidProtocolBufferException e) {
// A failed parse of the znode is pretty catastrophic. Rather than loop

View File

@ -51,9 +51,125 @@ public class RegionState {
SPLITTING_NEW, // new region to be created when RS splits a parent
// region but hasn't be created yet, or master doesn't
// know it's already created
MERGING_NEW // new region to be created when RS merges two
MERGING_NEW; // new region to be created when RS merges two
// daughter regions but hasn't be created yet, or
// master doesn't know it's already created
/**
* Convert to protobuf ClusterStatusProtos.RegionState.State
*/
public ClusterStatusProtos.RegionState.State convert() {
ClusterStatusProtos.RegionState.State rs;
switch (this) {
case OFFLINE:
rs = ClusterStatusProtos.RegionState.State.OFFLINE;
break;
case PENDING_OPEN:
rs = ClusterStatusProtos.RegionState.State.PENDING_OPEN;
break;
case OPENING:
rs = ClusterStatusProtos.RegionState.State.OPENING;
break;
case OPEN:
rs = ClusterStatusProtos.RegionState.State.OPEN;
break;
case PENDING_CLOSE:
rs = ClusterStatusProtos.RegionState.State.PENDING_CLOSE;
break;
case CLOSING:
rs = ClusterStatusProtos.RegionState.State.CLOSING;
break;
case CLOSED:
rs = ClusterStatusProtos.RegionState.State.CLOSED;
break;
case SPLITTING:
rs = ClusterStatusProtos.RegionState.State.SPLITTING;
break;
case SPLIT:
rs = ClusterStatusProtos.RegionState.State.SPLIT;
break;
case FAILED_OPEN:
rs = ClusterStatusProtos.RegionState.State.FAILED_OPEN;
break;
case FAILED_CLOSE:
rs = ClusterStatusProtos.RegionState.State.FAILED_CLOSE;
break;
case MERGING:
rs = ClusterStatusProtos.RegionState.State.MERGING;
break;
case MERGED:
rs = ClusterStatusProtos.RegionState.State.MERGED;
break;
case SPLITTING_NEW:
rs = ClusterStatusProtos.RegionState.State.SPLITTING_NEW;
break;
case MERGING_NEW:
rs = ClusterStatusProtos.RegionState.State.MERGING_NEW;
break;
default:
throw new IllegalStateException("");
}
return rs;
}
/**
* Convert a protobuf HBaseProtos.RegionState.State to a RegionState.State
*
* @return the RegionState.State
*/
public static State convert(ClusterStatusProtos.RegionState.State protoState) {
State state;
switch (protoState) {
case OFFLINE:
state = OFFLINE;
break;
case PENDING_OPEN:
state = PENDING_OPEN;
break;
case OPENING:
state = OPENING;
break;
case OPEN:
state = OPEN;
break;
case PENDING_CLOSE:
state = PENDING_CLOSE;
break;
case CLOSING:
state = CLOSING;
break;
case CLOSED:
state = CLOSED;
break;
case SPLITTING:
state = SPLITTING;
break;
case SPLIT:
state = SPLIT;
break;
case FAILED_OPEN:
state = FAILED_OPEN;
break;
case FAILED_CLOSE:
state = FAILED_CLOSE;
break;
case MERGING:
state = MERGING;
break;
case MERGED:
state = MERGED;
break;
case SPLITTING_NEW:
state = SPLITTING_NEW;
break;
case MERGING_NEW:
state = MERGING_NEW;
break;
default:
throw new IllegalStateException("");
}
return state;
}
}
private final long stamp;
@ -250,58 +366,8 @@ public class RegionState {
*/
public ClusterStatusProtos.RegionState convert() {
ClusterStatusProtos.RegionState.Builder regionState = ClusterStatusProtos.RegionState.newBuilder();
ClusterStatusProtos.RegionState.State rs;
switch (this.state) {
case OFFLINE:
rs = ClusterStatusProtos.RegionState.State.OFFLINE;
break;
case PENDING_OPEN:
rs = ClusterStatusProtos.RegionState.State.PENDING_OPEN;
break;
case OPENING:
rs = ClusterStatusProtos.RegionState.State.OPENING;
break;
case OPEN:
rs = ClusterStatusProtos.RegionState.State.OPEN;
break;
case PENDING_CLOSE:
rs = ClusterStatusProtos.RegionState.State.PENDING_CLOSE;
break;
case CLOSING:
rs = ClusterStatusProtos.RegionState.State.CLOSING;
break;
case CLOSED:
rs = ClusterStatusProtos.RegionState.State.CLOSED;
break;
case SPLITTING:
rs = ClusterStatusProtos.RegionState.State.SPLITTING;
break;
case SPLIT:
rs = ClusterStatusProtos.RegionState.State.SPLIT;
break;
case FAILED_OPEN:
rs = ClusterStatusProtos.RegionState.State.FAILED_OPEN;
break;
case FAILED_CLOSE:
rs = ClusterStatusProtos.RegionState.State.FAILED_CLOSE;
break;
case MERGING:
rs = ClusterStatusProtos.RegionState.State.MERGING;
break;
case MERGED:
rs = ClusterStatusProtos.RegionState.State.MERGED;
break;
case SPLITTING_NEW:
rs = ClusterStatusProtos.RegionState.State.SPLITTING_NEW;
break;
case MERGING_NEW:
rs = ClusterStatusProtos.RegionState.State.MERGING_NEW;
break;
default:
throw new IllegalStateException("");
}
regionState.setRegionInfo(HRegionInfo.convert(hri));
regionState.setState(rs);
regionState.setState(state.convert());
regionState.setStamp(getStamp());
return regionState.build();
}
@ -312,58 +378,8 @@ public class RegionState {
* @return the RegionState
*/
public static RegionState convert(ClusterStatusProtos.RegionState proto) {
RegionState.State state;
switch (proto.getState()) {
case OFFLINE:
state = State.OFFLINE;
break;
case PENDING_OPEN:
state = State.PENDING_OPEN;
break;
case OPENING:
state = State.OPENING;
break;
case OPEN:
state = State.OPEN;
break;
case PENDING_CLOSE:
state = State.PENDING_CLOSE;
break;
case CLOSING:
state = State.CLOSING;
break;
case CLOSED:
state = State.CLOSED;
break;
case SPLITTING:
state = State.SPLITTING;
break;
case SPLIT:
state = State.SPLIT;
break;
case FAILED_OPEN:
state = State.FAILED_OPEN;
break;
case FAILED_CLOSE:
state = State.FAILED_CLOSE;
break;
case MERGING:
state = State.MERGING;
break;
case MERGED:
state = State.MERGED;
break;
case SPLITTING_NEW:
state = State.SPLITTING_NEW;
break;
case MERGING_NEW:
state = State.MERGING_NEW;
break;
default:
throw new IllegalStateException("");
}
return new RegionState(HRegionInfo.convert(proto.getRegionInfo()),state,proto.getStamp(),null);
return new RegionState(HRegionInfo.convert(proto.getRegionInfo()),
State.convert(proto.getState()), proto.getStamp(), null);
}
/**

View File

@ -17,29 +17,6 @@
*/
package org.apache.hadoop.hbase.zookeeper;
import com.google.common.base.Stopwatch;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.RetriesExhaustedException;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.zookeeper.KeeperException;
import java.io.EOFException;
import java.io.IOException;
import java.net.ConnectException;
@ -48,6 +25,35 @@ import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.rmi.UnknownHostException;
import javax.annotation.Nullable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.RetriesExhaustedException;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.master.RegionState;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.MetaRegionServer;
import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.zookeeper.KeeperException;
import com.google.common.base.Stopwatch;
import com.google.protobuf.InvalidProtocolBufferException;
/**
* Utility class to perform operation (get/wait for/verify/set/delete) on znode in ZooKeeper
* which keeps hbase:meta region server location.
@ -78,15 +84,7 @@ public class MetaTableLocator {
* @return true if meta region location is available, false if not
*/
public boolean isLocationAvailable(ZooKeeperWatcher zkw) {
try {
return ZKUtil.getData(zkw, zkw.metaServerZNode) != null;
} catch(KeeperException e) {
LOG.error("ZK error trying to get hbase:meta from ZooKeeper");
return false;
} catch (InterruptedException e) {
LOG.error("ZK error trying to get hbase:meta from ZooKeeper");
return false;
}
return getMetaRegionLocation(zkw) != null;
}
/**
@ -94,18 +92,13 @@ public class MetaTableLocator {
* @param zkw zookeeper connection to use
* @return server name or null if we failed to get the data.
*/
@Nullable
public ServerName getMetaRegionLocation(final ZooKeeperWatcher zkw) {
try {
try {
return ServerName.parseFrom(ZKUtil.getData(zkw, zkw.metaServerZNode));
} catch (DeserializationException e) {
throw ZKUtil.convert(e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return null;
}
RegionState state = getMetaRegionState(zkw);
return state.isOpened() ? state.getServerName() : null;
} catch (KeeperException ke) {
return null;
return null;
}
}
@ -189,9 +182,8 @@ public class MetaTableLocator {
} catch (RegionServerStoppedException e) {
// Pass -- server name sends us to a server that is dying or already dead.
}
return (service == null)? false:
verifyRegionLocation(service,
getMetaRegionLocation(zkw), META_REGION_NAME);
return (service != null) && verifyRegionLocation(service,
getMetaRegionLocation(zkw), META_REGION_NAME);
}
/**
@ -315,44 +307,65 @@ public class MetaTableLocator {
* Sets the location of <code>hbase:meta</code> in ZooKeeper to the
* specified server address.
* @param zookeeper zookeeper reference
* @param location The server hosting <code>hbase:meta</code>
* @param serverName The server hosting <code>hbase:meta</code>
* @param state The region transition state
* @throws KeeperException unexpected zookeeper exception
*/
public static void setMetaLocation(ZooKeeperWatcher zookeeper,
final ServerName location)
throws KeeperException {
LOG.info("Setting hbase:meta region location in ZooKeeper as " + location);
ServerName serverName, RegionState.State state) throws KeeperException {
LOG.info("Setting hbase:meta region location in ZooKeeper as " + serverName);
// Make the MetaRegionServer pb and then get its bytes and save this as
// the znode content.
byte [] data = toByteArray(location);
MetaRegionServer pbrsr = MetaRegionServer.newBuilder()
.setServer(ProtobufUtil.toServerName(serverName))
.setRpcVersion(HConstants.RPC_CURRENT_VERSION)
.setState(state.convert()).build();
byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());
try {
ZKUtil.createAndWatch(zookeeper, zookeeper.metaServerZNode, data);
} catch(KeeperException.NodeExistsException nee) {
LOG.debug("META region location already existed, updated location");
ZKUtil.setData(zookeeper, zookeeper.metaServerZNode, data);
} catch(KeeperException.NoNodeException nne) {
LOG.debug("META region location doesn't existed, create it");
ZKUtil.createAndWatch(zookeeper, zookeeper.metaServerZNode, data);
}
}
/**
* Build up the znode content.
* @param sn What to put into the znode.
* @return The content of the meta-region-server znode
* Load the meta region state from the meta server ZNode.
*/
private static byte [] toByteArray(final ServerName sn) {
// ZNode content is a pb message preceded by some pb magic.
HBaseProtos.ServerName pbsn =
HBaseProtos.ServerName.newBuilder()
.setHostName(sn.getHostname())
.setPort(sn.getPort())
.setStartCode(sn.getStartcode())
.build();
ZooKeeperProtos.MetaRegionServer pbrsr =
ZooKeeperProtos.MetaRegionServer.newBuilder()
.setServer(pbsn)
.setRpcVersion(HConstants.RPC_CURRENT_VERSION)
.build();
return ProtobufUtil.prependPBMagic(pbrsr.toByteArray());
public static RegionState getMetaRegionState(ZooKeeperWatcher zkw) throws KeeperException {
RegionState.State state = RegionState.State.OPEN;
ServerName serverName = null;
try {
byte[] data = ZKUtil.getData(zkw, zkw.metaServerZNode);
if (data != null && data.length > 0 && ProtobufUtil.isPBMagicPrefix(data)) {
try {
int prefixLen = ProtobufUtil.lengthOfPBMagic();
ZooKeeperProtos.MetaRegionServer rl =
ZooKeeperProtos.MetaRegionServer.PARSER.parseFrom
(data, prefixLen, data.length - prefixLen);
if (rl.hasState()) {
state = RegionState.State.convert(rl.getState());
}
HBaseProtos.ServerName sn = rl.getServer();
serverName = ServerName.valueOf(
sn.getHostName(), sn.getPort(), sn.getStartCode());
} catch (InvalidProtocolBufferException e) {
throw new DeserializationException("Unable to parse meta region location");
}
} else {
// old style of meta region location?
serverName = ServerName.parseFrom(data);
}
} catch (DeserializationException e) {
throw ZKUtil.convert(e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
if (serverName == null) {
state = RegionState.State.OFFLINE;
}
return new RegionState(HRegionInfo.FIRST_META_REGIONINFO,
state, serverName);
}
/**
@ -362,7 +375,7 @@ public class MetaTableLocator {
*/
public void deleteMetaLocation(ZooKeeperWatcher zookeeper)
throws KeeperException {
LOG.info("Unsetting hbase:meta region location in ZooKeeper");
LOG.info("Deleting hbase:meta region location in ZooKeeper");
try {
// Just delete the node. Don't need any watches.
ZKUtil.deleteNode(zookeeper, zookeeper.metaServerZNode);
@ -372,7 +385,7 @@ public class MetaTableLocator {
}
/**
* Wait until the meta region is available.
* Wait until the meta region is available and is not in transition.
* @param zkw zookeeper connection to use
* @param timeout maximum time to wait, in millis
* @return ServerName or null if we timed out.
@ -381,14 +394,23 @@ public class MetaTableLocator {
public ServerName blockUntilAvailable(final ZooKeeperWatcher zkw,
final long timeout)
throws InterruptedException {
byte [] data = ZKUtil.blockUntilAvailable(zkw, zkw.metaServerZNode, timeout);
if (data == null) return null;
if (timeout < 0) throw new IllegalArgumentException();
if (zkw == null) throw new IllegalArgumentException();
Stopwatch sw = new Stopwatch().start();
ServerName sn = null;
try {
return ServerName.parseFrom(data);
} catch (DeserializationException e) {
LOG.warn("Failed parse", e);
return null;
while (true) {
sn = getMetaRegionLocation(zkw);
if (sn != null || sw.elapsedMillis()
> timeout - HConstants.SOCKET_RETRY_WAIT_MS) {
break;
}
Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);
}
} finally {
sw.stop();
}
return sn;
}
/**

View File

@ -1831,36 +1831,6 @@ public class ZKUtil {
}
}
public static byte[] blockUntilAvailable(
final ZooKeeperWatcher zkw, final String znode, final long timeout)
throws InterruptedException {
if (timeout < 0) throw new IllegalArgumentException();
if (zkw == null) throw new IllegalArgumentException();
if (znode == null) throw new IllegalArgumentException();
byte[] data = null;
boolean finished = false;
final long endTime = System.currentTimeMillis() + timeout;
while (!finished) {
try {
data = ZKUtil.getData(zkw, znode);
} catch(KeeperException e) {
LOG.warn("Unexpected exception handling blockUntilAvailable", e);
}
if (data == null && (System.currentTimeMillis() +
HConstants.SOCKET_RETRY_WAIT_MS < endTime)) {
Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);
} else {
finished = true;
}
}
return data;
}
/**
* Convert a {@link DeserializationException} to a more palatable {@link KeeperException}.
* Used when can't let a {@link DeserializationException} out w/o changing public API.

View File

@ -16,7 +16,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
boolean hasServer();
@ -24,7 +25,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName getServer();
@ -32,7 +34,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerNameOrBuilder getServerOrBuilder();
@ -58,6 +61,24 @@ public final class ZooKeeperProtos {
* </pre>
*/
int getRpcVersion();
// optional .RegionState.State state = 3;
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
boolean hasState();
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State getState();
}
/**
* Protobuf type {@code MetaRegionServer}
@ -133,6 +154,17 @@ public final class ZooKeeperProtos {
rpcVersion_ = input.readUInt32();
break;
}
case 24: {
int rawValue = input.readEnum();
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State value = org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State.valueOf(rawValue);
if (value == null) {
unknownFields.mergeVarintField(3, rawValue);
} else {
bitField0_ |= 0x00000004;
state_ = value;
}
break;
}
}
}
} catch (com.google.protobuf.InvalidProtocolBufferException e) {
@ -180,7 +212,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public boolean hasServer() {
@ -190,7 +223,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName getServer() {
@ -200,7 +234,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerNameOrBuilder getServerOrBuilder() {
@ -235,9 +270,34 @@ public final class ZooKeeperProtos {
return rpcVersion_;
}
// optional .RegionState.State state = 3;
public static final int STATE_FIELD_NUMBER = 3;
private org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State state_;
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public boolean hasState() {
return ((bitField0_ & 0x00000004) == 0x00000004);
}
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State getState() {
return state_;
}
private void initFields() {
server_ = org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName.getDefaultInstance();
rpcVersion_ = 0;
state_ = org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State.OFFLINE;
}
private byte memoizedIsInitialized = -1;
public final boolean isInitialized() {
@ -265,6 +325,9 @@ public final class ZooKeeperProtos {
if (((bitField0_ & 0x00000002) == 0x00000002)) {
output.writeUInt32(2, rpcVersion_);
}
if (((bitField0_ & 0x00000004) == 0x00000004)) {
output.writeEnum(3, state_.getNumber());
}
getUnknownFields().writeTo(output);
}
@ -282,6 +345,10 @@ public final class ZooKeeperProtos {
size += com.google.protobuf.CodedOutputStream
.computeUInt32Size(2, rpcVersion_);
}
if (((bitField0_ & 0x00000004) == 0x00000004)) {
size += com.google.protobuf.CodedOutputStream
.computeEnumSize(3, state_.getNumber());
}
size += getUnknownFields().getSerializedSize();
memoizedSerializedSize = size;
return size;
@ -315,6 +382,11 @@ public final class ZooKeeperProtos {
result = result && (getRpcVersion()
== other.getRpcVersion());
}
result = result && (hasState() == other.hasState());
if (hasState()) {
result = result &&
(getState() == other.getState());
}
result = result &&
getUnknownFields().equals(other.getUnknownFields());
return result;
@ -336,6 +408,10 @@ public final class ZooKeeperProtos {
hash = (37 * hash) + RPC_VERSION_FIELD_NUMBER;
hash = (53 * hash) + getRpcVersion();
}
if (hasState()) {
hash = (37 * hash) + STATE_FIELD_NUMBER;
hash = (53 * hash) + hashEnum(getState());
}
hash = (29 * hash) + getUnknownFields().hashCode();
memoizedHashCode = hash;
return hash;
@ -459,6 +535,8 @@ public final class ZooKeeperProtos {
bitField0_ = (bitField0_ & ~0x00000001);
rpcVersion_ = 0;
bitField0_ = (bitField0_ & ~0x00000002);
state_ = org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State.OFFLINE;
bitField0_ = (bitField0_ & ~0x00000004);
return this;
}
@ -499,6 +577,10 @@ public final class ZooKeeperProtos {
to_bitField0_ |= 0x00000002;
}
result.rpcVersion_ = rpcVersion_;
if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
to_bitField0_ |= 0x00000004;
}
result.state_ = state_;
result.bitField0_ = to_bitField0_;
onBuilt();
return result;
@ -521,6 +603,9 @@ public final class ZooKeeperProtos {
if (other.hasRpcVersion()) {
setRpcVersion(other.getRpcVersion());
}
if (other.hasState()) {
setState(other.getState());
}
this.mergeUnknownFields(other.getUnknownFields());
return this;
}
@ -564,7 +649,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public boolean hasServer() {
@ -574,7 +660,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName getServer() {
@ -588,7 +675,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public Builder setServer(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName value) {
@ -608,7 +696,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public Builder setServer(
@ -626,7 +715,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public Builder mergeServer(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName value) {
@ -649,7 +739,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public Builder clearServer() {
@ -666,7 +757,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName.Builder getServerBuilder() {
@ -678,7 +770,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerNameOrBuilder getServerOrBuilder() {
@ -692,7 +785,8 @@ public final class ZooKeeperProtos {
* <code>required .ServerName server = 1;</code>
*
* <pre>
* The ServerName hosting the meta region currently.
* The ServerName hosting the meta region currently, or destination server,
* if meta region is in transition.
* </pre>
*/
private com.google.protobuf.SingleFieldBuilder<
@ -766,6 +860,58 @@ public final class ZooKeeperProtos {
return this;
}
// optional .RegionState.State state = 3;
private org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State state_ = org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State.OFFLINE;
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public boolean hasState() {
return ((bitField0_ & 0x00000004) == 0x00000004);
}
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State getState() {
return state_;
}
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public Builder setState(org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State value) {
if (value == null) {
throw new NullPointerException();
}
bitField0_ |= 0x00000004;
state_ = value;
onChanged();
return this;
}
/**
* <code>optional .RegionState.State state = 3;</code>
*
* <pre>
* State of the region transition. OPEN means fully operational 'hbase:meta'
* </pre>
*/
public Builder clearState() {
bitField0_ = (bitField0_ & ~0x00000004);
state_ = org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionState.State.OFFLINE;
onChanged();
return this;
}
// @@protoc_insertion_point(builder_scope:MetaRegionServer)
}
@ -9414,39 +9560,40 @@ public final class ZooKeeperProtos {
descriptor;
static {
java.lang.String[] descriptorData = {
"\n\017ZooKeeper.proto\032\013HBase.proto\"D\n\020MetaRe" +
"gionServer\022\033\n\006server\030\001 \002(\0132\013.ServerName\022" +
"\023\n\013rpc_version\030\002 \001(\r\":\n\006Master\022\033\n\006master" +
"\030\001 \002(\0132\013.ServerName\022\023\n\013rpc_version\030\002 \001(\r" +
"\"\037\n\tClusterUp\022\022\n\nstart_date\030\001 \002(\t\"\214\002\n\014Sp" +
"litLogTask\022\"\n\005state\030\001 \002(\0162\023.SplitLogTask" +
".State\022 \n\013server_name\030\002 \002(\0132\013.ServerName" +
"\0221\n\004mode\030\003 \001(\0162\032.SplitLogTask.RecoveryMo" +
"de:\007UNKNOWN\"C\n\005State\022\016\n\nUNASSIGNED\020\000\022\t\n\005" +
"OWNED\020\001\022\014\n\010RESIGNED\020\002\022\010\n\004DONE\020\003\022\007\n\003ERR\020\004",
"\">\n\014RecoveryMode\022\013\n\007UNKNOWN\020\000\022\021\n\rLOG_SPL" +
"ITTING\020\001\022\016\n\nLOG_REPLAY\020\002\"n\n\005Table\022$\n\005sta" +
"te\030\001 \002(\0162\014.Table.State:\007ENABLED\"?\n\005State" +
"\022\013\n\007ENABLED\020\000\022\014\n\010DISABLED\020\001\022\r\n\tDISABLING" +
"\020\002\022\014\n\010ENABLING\020\003\"\215\001\n\017ReplicationPeer\022\022\n\n" +
"clusterkey\030\001 \002(\t\022\037\n\027replicationEndpointI" +
"mpl\030\002 \001(\t\022\035\n\004data\030\003 \003(\0132\017.BytesBytesPair" +
"\022&\n\rconfiguration\030\004 \003(\0132\017.NameStringPair" +
"\"^\n\020ReplicationState\022&\n\005state\030\001 \002(\0162\027.Re" +
"plicationState.State\"\"\n\005State\022\013\n\007ENABLED",
"\020\000\022\014\n\010DISABLED\020\001\"+\n\027ReplicationHLogPosit" +
"ion\022\020\n\010position\030\001 \002(\003\"%\n\017ReplicationLock" +
"\022\022\n\nlock_owner\030\001 \002(\t\"\230\001\n\tTableLock\022\036\n\nta" +
"ble_name\030\001 \001(\0132\n.TableName\022\037\n\nlock_owner" +
"\030\002 \001(\0132\013.ServerName\022\021\n\tthread_id\030\003 \001(\003\022\021" +
"\n\tis_shared\030\004 \001(\010\022\017\n\007purpose\030\005 \001(\t\022\023\n\013cr" +
"eate_time\030\006 \001(\003\";\n\017StoreSequenceId\022\023\n\013fa" +
"mily_name\030\001 \002(\014\022\023\n\013sequence_id\030\002 \002(\004\"g\n\026" +
"RegionStoreSequenceIds\022 \n\030last_flushed_s" +
"equence_id\030\001 \002(\004\022+\n\021store_sequence_id\030\002 ",
"\003(\0132\020.StoreSequenceIdBE\n*org.apache.hado" +
"op.hbase.protobuf.generatedB\017ZooKeeperPr" +
"otosH\001\210\001\001\240\001\001"
"\n\017ZooKeeper.proto\032\013HBase.proto\032\023ClusterS" +
"tatus.proto\"g\n\020MetaRegionServer\022\033\n\006serve" +
"r\030\001 \002(\0132\013.ServerName\022\023\n\013rpc_version\030\002 \001(" +
"\r\022!\n\005state\030\003 \001(\0162\022.RegionState.State\":\n\006" +
"Master\022\033\n\006master\030\001 \002(\0132\013.ServerName\022\023\n\013r" +
"pc_version\030\002 \001(\r\"\037\n\tClusterUp\022\022\n\nstart_d" +
"ate\030\001 \002(\t\"\214\002\n\014SplitLogTask\022\"\n\005state\030\001 \002(" +
"\0162\023.SplitLogTask.State\022 \n\013server_name\030\002 " +
"\002(\0132\013.ServerName\0221\n\004mode\030\003 \001(\0162\032.SplitLo" +
"gTask.RecoveryMode:\007UNKNOWN\"C\n\005State\022\016\n\n",
"UNASSIGNED\020\000\022\t\n\005OWNED\020\001\022\014\n\010RESIGNED\020\002\022\010\n" +
"\004DONE\020\003\022\007\n\003ERR\020\004\">\n\014RecoveryMode\022\013\n\007UNKN" +
"OWN\020\000\022\021\n\rLOG_SPLITTING\020\001\022\016\n\nLOG_REPLAY\020\002" +
"\"n\n\005Table\022$\n\005state\030\001 \002(\0162\014.Table.State:\007" +
"ENABLED\"?\n\005State\022\013\n\007ENABLED\020\000\022\014\n\010DISABLE" +
"D\020\001\022\r\n\tDISABLING\020\002\022\014\n\010ENABLING\020\003\"\215\001\n\017Rep" +
"licationPeer\022\022\n\nclusterkey\030\001 \002(\t\022\037\n\027repl" +
"icationEndpointImpl\030\002 \001(\t\022\035\n\004data\030\003 \003(\0132" +
"\017.BytesBytesPair\022&\n\rconfiguration\030\004 \003(\0132" +
"\017.NameStringPair\"^\n\020ReplicationState\022&\n\005",
"state\030\001 \002(\0162\027.ReplicationState.State\"\"\n\005" +
"State\022\013\n\007ENABLED\020\000\022\014\n\010DISABLED\020\001\"+\n\027Repl" +
"icationHLogPosition\022\020\n\010position\030\001 \002(\003\"%\n" +
"\017ReplicationLock\022\022\n\nlock_owner\030\001 \002(\t\"\230\001\n" +
"\tTableLock\022\036\n\ntable_name\030\001 \001(\0132\n.TableNa" +
"me\022\037\n\nlock_owner\030\002 \001(\0132\013.ServerName\022\021\n\tt" +
"hread_id\030\003 \001(\003\022\021\n\tis_shared\030\004 \001(\010\022\017\n\007pur" +
"pose\030\005 \001(\t\022\023\n\013create_time\030\006 \001(\003\";\n\017Store" +
"SequenceId\022\023\n\013family_name\030\001 \002(\014\022\023\n\013seque" +
"nce_id\030\002 \002(\004\"g\n\026RegionStoreSequenceIds\022 ",
"\n\030last_flushed_sequence_id\030\001 \002(\004\022+\n\021stor" +
"e_sequence_id\030\002 \003(\0132\020.StoreSequenceIdBE\n" +
"*org.apache.hadoop.hbase.protobuf.genera" +
"tedB\017ZooKeeperProtosH\001\210\001\001\240\001\001"
};
com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
@ -9458,7 +9605,7 @@ public final class ZooKeeperProtos {
internal_static_MetaRegionServer_fieldAccessorTable = new
com.google.protobuf.GeneratedMessage.FieldAccessorTable(
internal_static_MetaRegionServer_descriptor,
new java.lang.String[] { "Server", "RpcVersion", });
new java.lang.String[] { "Server", "RpcVersion", "State", });
internal_static_Master_descriptor =
getDescriptor().getMessageTypes().get(1);
internal_static_Master_fieldAccessorTable = new
@ -9532,6 +9679,7 @@ public final class ZooKeeperProtos {
.internalBuildGeneratedFileFrom(descriptorData,
new com.google.protobuf.Descriptors.FileDescriptor[] {
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.getDescriptor(),
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.getDescriptor(),
}, assigner);
}

View File

@ -26,17 +26,22 @@ option java_generate_equals_and_hash = true;
option optimize_for = SPEED;
import "HBase.proto";
import "ClusterStatus.proto";
/**
* Content of the meta-region-server znode.
*/
message MetaRegionServer {
// The ServerName hosting the meta region currently.
// The ServerName hosting the meta region currently, or destination server,
// if meta region is in transition.
required ServerName server = 1;
// The major version of the rpc the server speaks. This is used so that
// clients connecting to the cluster can have prior knowledge of what version
// to send to a RegionServer. AsyncHBase will use this to detect versions.
optional uint32 rpc_version = 2;
// State of the region transition. OPEN means fully operational 'hbase:meta'
optional RegionState.State state = 3;
}
/**

View File

@ -524,7 +524,14 @@ public class AssignmentManager {
regionStateStore.start();
if (failover) {
processDeadServers(deadServers);
if (deadServers != null && !deadServers.isEmpty()) {
for (ServerName serverName: deadServers) {
if (!serverManager.isServerDead(serverName)) {
serverManager.expireServer(serverName); // Let SSH do region re-assign
}
}
}
processRegionsInTransition(regionStates.getRegionsInTransition().values());
}
// Now we can safely claim failover cleanup completed and enable
@ -1399,13 +1406,9 @@ public class AssignmentManager {
* <p>
* Assumes that hbase:meta is currently closed and is not being actively served by
* any RegionServer.
* <p>
* Forcibly unsets the current meta region location in ZooKeeper and assigns
* hbase:meta to a random RegionServer.
* @throws KeeperException
*/
public void assignMeta() throws KeeperException {
this.server.getMetaTableLocator().deleteMetaLocation(this.server.getZooKeeper());
regionStates.updateRegionState(HRegionInfo.FIRST_META_REGIONINFO, State.OFFLINE);
assign(HRegionInfo.FIRST_META_REGIONINFO);
}
@ -1709,28 +1712,15 @@ public class AssignmentManager {
}
/**
* Processes list of dead servers from result of hbase:meta scan and regions in RIT
*
* @param deadServers
* The list of dead servers which failed while there was no active
* master. Can be null.
* Processes list of regions in transition at startup
*/
private void processDeadServers(Set<ServerName> deadServers) {
if (deadServers != null && !deadServers.isEmpty()) {
for (ServerName serverName: deadServers) {
if (!serverManager.isServerDead(serverName)) {
serverManager.expireServer(serverName); // Let SSH do region re-assign
}
}
}
void processRegionsInTransition(Collection<RegionState> regionStates) {
// We need to send RPC call again for PENDING_OPEN/PENDING_CLOSE regions
// in case the RPC call is not sent out yet before the master was shut down
// since we update the state before we send the RPC call. We can't update
// the state after the RPC call. Otherwise, we don't know what's happened
// to the region if the master dies right after the RPC call is out.
Map<String, RegionState> rits = regionStates.getRegionsInTransition();
for (RegionState regionState: rits.values()) {
for (RegionState regionState: regionStates) {
if (!serverManager.isServerOnline(regionState.getServerName())) {
continue; // SSH will handle it
}

View File

@ -26,6 +26,7 @@ import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
@ -46,6 +47,7 @@ import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.ClusterStatus;
import org.apache.hadoop.hbase.CoordinatedStateException;
import org.apache.hadoop.hbase.CoordinatedStateManager;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.HBaseIOException;
import org.apache.hadoop.hbase.HColumnDescriptor;
@ -53,6 +55,7 @@ import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.MetaTableAccessor;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.NamespaceNotFoundException;
import org.apache.hadoop.hbase.PleaseHoldException;
@ -64,12 +67,10 @@ import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotDisabledException;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.UnknownRegionException;
import org.apache.hadoop.hbase.MetaTableAccessor;
import org.apache.hadoop.hbase.client.MetaScanner;
import org.apache.hadoop.hbase.client.MetaScanner.MetaScannerVisitor;
import org.apache.hadoop.hbase.client.MetaScanner.MetaScannerVisitorBase;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.CoordinatedStateManager;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.executor.ExecutorType;
@ -77,7 +78,6 @@ import org.apache.hadoop.hbase.ipc.RequestContext;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.master.MasterRpcServices.BalanceSwitchMode;
import org.apache.hadoop.hbase.master.RegionState.State;
import org.apache.hadoop.hbase.master.balancer.BalancerChore;
import org.apache.hadoop.hbase.master.balancer.ClusterStatusChore;
import org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory;
@ -100,8 +100,8 @@ import org.apache.hadoop.hbase.monitoring.TaskMonitor;
import org.apache.hadoop.hbase.procedure.MasterProcedureManagerHost;
import org.apache.hadoop.hbase.procedure.flush.MasterFlushTableProcedureManager;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionServerInfo;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.SplitLogTask.RecoveryMode;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos.SplitLogTask.RecoveryMode;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.RSRpcServices;
import org.apache.hadoop.hbase.regionserver.RegionSplitPolicy;
@ -647,37 +647,29 @@ public class HMaster extends HRegionServer implements MasterServices, Server {
long timeout = this.conf.getLong("hbase.catalog.verification.timeout", 1000);
status.setStatus("Assigning hbase:meta region");
// Get current meta state from zk.
RegionState metaState = MetaTableLocator.getMetaRegionState(getZooKeeper());
RegionStates regionStates = assignmentManager.getRegionStates();
regionStates.createRegionState(HRegionInfo.FIRST_META_REGIONINFO);
boolean metaRegionLocation = metaTableLocator.verifyMetaRegionLocation(
this.getShortCircuitConnection(), this.getZooKeeper(), timeout);
ServerName currentMetaServer = metaTableLocator.getMetaRegionLocation(this.getZooKeeper());
if (!metaRegionLocation) {
// Meta location is not verified. It should be in transition, or offline.
// We will wait for it to be assigned in enableSSHandWaitForMeta below.
if (currentMetaServer != null) {
// If the meta server is not known to be dead or online,
// just split the meta log, and don't expire it since this
// could be a full cluster restart. Otherwise, we will think
// this is a failover and lose previous region locations.
// If it is really a failover case, AM will find out in rebuilding
// user regions. Otherwise, we are good since all logs are split
// or known to be replayed before user regions are assigned.
if (serverManager.isServerOnline(currentMetaServer)) {
LOG.info("Forcing expire of " + currentMetaServer);
serverManager.expireServer(currentMetaServer);
regionStates.createRegionState(HRegionInfo.FIRST_META_REGIONINFO,
metaState.getState(), metaState.getServerName(), null);
if (!metaState.isOpened() || !metaTableLocator.verifyMetaRegionLocation(
this.getShortCircuitConnection(), this.getZooKeeper(), timeout)) {
ServerName currentMetaServer = metaState.getServerName();
if (serverManager.isServerOnline(currentMetaServer)) {
LOG.info("Meta was in transition on " + currentMetaServer);
assignmentManager.processRegionsInTransition(Arrays.asList(metaState));
} else {
if (currentMetaServer != null) {
splitMetaLogBeforeAssignment(currentMetaServer);
regionStates.logSplit(HRegionInfo.FIRST_META_REGIONINFO);
previouslyFailedMetaRSs.add(currentMetaServer);
}
splitMetaLogBeforeAssignment(currentMetaServer);
previouslyFailedMetaRSs.add(currentMetaServer);
LOG.info("Re-assigning hbase:meta, it was on " + currentMetaServer);
assignmentManager.assignMeta();
}
assignmentManager.assignMeta();
assigned++;
} else {
// Region already assigned. We didn't assign it. Add to in-memory state.
regionStates.updateRegionState(
HRegionInfo.FIRST_META_REGIONINFO, State.OPEN, currentMetaServer);
this.assignmentManager.regionOnline(
HRegionInfo.FIRST_META_REGIONINFO, currentMetaServer);
}
enableMeta(TableName.META_TABLE_NAME);
@ -737,9 +729,6 @@ public class HMaster extends HRegionServer implements MasterServices, Server {
if (waitForMeta) {
metaTableLocator.waitMetaRegionLocation(this.getZooKeeper());
// Above check waits for general meta availability but this does not
// guarantee that the transition has completed
this.assignmentManager.waitForAssignment(HRegionInfo.FIRST_META_REGIONINFO);
}
}

View File

@ -40,6 +40,9 @@ import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.MultiHConnection;
import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
import org.apache.zookeeper.KeeperException;
import com.google.common.base.Preconditions;
/**
@ -158,20 +161,31 @@ public class RegionStateStore {
void updateRegionState(long openSeqNum,
RegionState newState, RegionState oldState) {
if (!initialized) {
return;
}
HRegionInfo hri = newState.getRegion();
if (!shouldPersistStateChange(hri, newState, oldState)) {
return;
}
ServerName oldServer = oldState != null ? oldState.getServerName() : null;
ServerName serverName = newState.getServerName();
State state = newState.getState();
try {
HRegionInfo hri = newState.getRegion();
// update meta before checking for initialization.
// meta state stored in zk.
if (hri.isMetaRegion()) {
// persist meta state in MetaTableLocator (which in turn is zk storage currently)
try {
MetaTableLocator.setMetaLocation(server.getZooKeeper(),
newState.getServerName(), newState.getState());
return; // Done
} catch (KeeperException e) {
throw new IOException("Failed to update meta ZNode", e);
}
}
if (!initialized
|| !shouldPersistStateChange(hri, newState, oldState)) {
return;
}
ServerName oldServer = oldState != null ? oldState.getServerName() : null;
ServerName serverName = newState.getServerName();
State state = newState.getState();
int replicaId = hri.getReplicaId();
Put put = new Put(MetaTableAccessor.getMetaKeyForRegion(hri));
StringBuilder info = new StringBuilder("Updating row ");

View File

@ -89,12 +89,6 @@ public class MetaServerShutdownHandler extends ServerShutdownHandler {
// timeout
if (am.isCarryingMeta(serverName)) {
LOG.info("Server " + serverName + " was carrying META. Trying to assign.");
am.regionOffline(HRegionInfo.FIRST_META_REGIONINFO);
verifyAndAssignMetaWithRetries();
} else if (!server.getMetaTableLocator().isLocationAvailable(this.server.getZooKeeper())) {
// the meta location as per master is null. This could happen in case when meta assignment
// in previous run failed, while meta znode has been updated to null. We should try to
// assign the meta again.
verifyAndAssignMetaWithRetries();
} else {
LOG.info("META has been assigned to otherwhere, skip assigning.");

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@ -88,6 +88,7 @@ import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.ipc.RpcServerInterface;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.RegionState.State;
import org.apache.hadoop.hbase.master.SplitLogManager;
import org.apache.hadoop.hbase.master.TableLockManager;
import org.apache.hadoop.hbase.procedure.RegionServerProcedureManagerHost;
@ -1719,10 +1720,6 @@ public class HRegionServer extends HasThread implements
// Update flushed sequence id of a recovering region in ZK
updateRecoveringRegionLastFlushedSequenceId(r);
if (r.getRegionInfo().isMetaRegion()) {
MetaTableLocator.setMetaLocation(getZooKeeper(), serverName);
}
// Notify master
if (!reportRegionStateTransition(
TransitionCode.OPENED, openSeqNum, r.getRegionInfo())) {
@ -1746,7 +1743,14 @@ public class HRegionServer extends HasThread implements
// to handle the region transition report at all.
if (code == TransitionCode.OPENED) {
Preconditions.checkArgument(hris != null && hris.length == 1);
if (!hris[0].isMetaRegion()) {
if (hris[0].isMetaRegion()) {
try {
MetaTableLocator.setMetaLocation(getZooKeeper(), serverName, State.OPEN);
} catch (KeeperException e) {
LOG.info("Failed to update meta location", e);
return false;
}
} else {
try {
MetaTableAccessor.updateRegionLocation(shortCircuitConnection,
hris[0], serverName, openSeqNum);

View File

@ -18,13 +18,14 @@
*/
package org.apache.hadoop.hbase;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;
import java.io.IOException;
import java.net.ConnectException;
import junit.framework.Assert;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
@ -32,6 +33,7 @@ import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.HConnectionManager;
import org.apache.hadoop.hbase.client.HConnectionTestingUtility;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.master.RegionState;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
@ -105,6 +107,39 @@ public class TestMetaTableLocator {
this.watcher.close();
}
/**
* Test normal operations
*/
@Test public void testMetaLookup()
throws IOException, InterruptedException, ServiceException, KeeperException {
final ClientProtos.ClientService.BlockingInterface client =
Mockito.mock(ClientProtos.ClientService.BlockingInterface.class);
Mockito.when(client.get((RpcController)Mockito.any(), (GetRequest)Mockito.any())).
thenReturn(GetResponse.newBuilder().build());
final MetaTableLocator mtl = new MetaTableLocator();
assertNull(mtl.getMetaRegionLocation(this.watcher));
for (RegionState.State state : RegionState.State.values()) {
if (state.equals(RegionState.State.OPEN))
continue;
MetaTableLocator.setMetaLocation(this.watcher, SN, state);
assertNull(mtl.getMetaRegionLocation(this.watcher));
assertEquals(state, MetaTableLocator.getMetaRegionState(this.watcher).getState());
}
MetaTableLocator.setMetaLocation(this.watcher, SN, RegionState.State.OPEN);
assertEquals(mtl.getMetaRegionLocation(this.watcher), SN);
assertEquals(RegionState.State.OPEN,
MetaTableLocator.getMetaRegionState(this.watcher).getState());
mtl.deleteMetaLocation(this.watcher);
assertNull(MetaTableLocator.getMetaRegionState(this.watcher).getServerName());
assertEquals(MetaTableLocator.getMetaRegionState(this.watcher).getState(),
RegionState.State.OFFLINE);
assertNull(mtl.getMetaRegionLocation(this.watcher));
}
/**
* Test interruptable while blocking wait on meta.
* @throws IOException
@ -121,7 +156,7 @@ public class TestMetaTableLocator {
final MetaTableLocator mtl = new MetaTableLocator();
ServerName meta = new MetaTableLocator().getMetaRegionLocation(this.watcher);
Assert.assertNull(meta);
assertNull(meta);
Thread t = new Thread() {
@Override
public void run() {
@ -153,11 +188,15 @@ public class TestMetaTableLocator {
Mockito.when(implementation.get((RpcController) Mockito.any(), (GetRequest) Mockito.any())).
thenThrow(new ServiceException(ex));
MetaTableLocator.setMetaLocation(this.watcher, SN);
long timeout = UTIL.getConfiguration().
getLong("hbase.catalog.verification.timeout", 1000);
Assert.assertFalse(new MetaTableLocator().verifyMetaRegionLocation(
getLong("hbase.catalog.verification.timeout", 1000);
MetaTableLocator.setMetaLocation(this.watcher, SN, RegionState.State.OPENING);
assertFalse(new MetaTableLocator().verifyMetaRegionLocation(
connection, watcher, timeout));
MetaTableLocator.setMetaLocation(this.watcher, SN, RegionState.State.OPEN);
assertFalse(new MetaTableLocator().verifyMetaRegionLocation(
connection, watcher, timeout));
}
/**
@ -213,9 +252,13 @@ public class TestMetaTableLocator {
Mockito.when(connection.getAdmin(Mockito.any(ServerName.class), Mockito.anyBoolean())).
thenReturn(implementation);
ServerName sn = ServerName.valueOf("example.com", 1234, System.currentTimeMillis());
MetaTableLocator.setMetaLocation(this.watcher,
ServerName.valueOf("example.com", 1234, System.currentTimeMillis()));
Assert.assertFalse(new MetaTableLocator().verifyMetaRegionLocation(connection, watcher, 100));
sn,
RegionState.State.OPENING);
assertFalse(new MetaTableLocator().verifyMetaRegionLocation(connection, watcher, 100));
MetaTableLocator.setMetaLocation(this.watcher, sn, RegionState.State.OPEN);
assertFalse(new MetaTableLocator().verifyMetaRegionLocation(connection, watcher, 100));
}
@Test (expected = NotAllMetaRegionsOnlineException.class)
@ -234,22 +277,18 @@ public class TestMetaTableLocator {
throws IOException, InterruptedException, KeeperException {
final MetaTableLocator mtl = new MetaTableLocator();
ServerName hsa = mtl.getMetaRegionLocation(watcher);
Assert.assertNull(hsa);
assertNull(hsa);
// Now test waiting on meta location getting set.
Thread t = new WaitOnMetaThread();
startWaitAliveThenWaitItLives(t, 1);
// Set a meta location.
hsa = setMetaLocation();
MetaTableLocator.setMetaLocation(this.watcher, SN, RegionState.State.OPEN);
hsa = SN;
// Join the thread... should exit shortly.
t.join();
// Now meta is available.
Assert.assertTrue(mtl.getMetaRegionLocation(watcher).equals(hsa));
}
private ServerName setMetaLocation() throws KeeperException {
MetaTableLocator.setMetaLocation(this.watcher, SN);
return SN;
assertTrue(mtl.getMetaRegionLocation(watcher).equals(hsa));
}
/**
@ -302,7 +341,7 @@ public class TestMetaTableLocator {
}
// Wait one second.
Threads.sleep(ms);
Assert.assertTrue("Assert " + t.getName() + " still waiting", t.isAlive());
assertTrue("Assert " + t.getName() + " still waiting", t.isAlive());
}
/**

View File

@ -67,7 +67,7 @@ import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hbase.util.JVMClusterUtil;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
import org.apache.zookeeper.KeeperException;
import org.junit.AfterClass;
import org.junit.BeforeClass;
@ -120,27 +120,42 @@ public class TestAssignmentManagerOnCluster {
metaServerName = cluster.getLiveRegionServerThreads()
.get(0).getRegionServer().getServerName();
master.move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),
Bytes.toBytes(metaServerName.getServerName()));
Bytes.toBytes(metaServerName.getServerName()));
TEST_UTIL.waitUntilNoRegionsInTransition(60000);
}
RegionState metaState =
MetaTableLocator.getMetaRegionState(master.getZooKeeper());
assertEquals("Meta should be not in transition", metaState.getState(), State.OPEN);
assertNotEquals("Meta should be moved off master",
metaServerName, master.getServerName());
metaState.getServerName(), master.getServerName());
assertEquals("Meta should be on the meta server",
metaState.getServerName(), metaServerName);
cluster.killRegionServer(metaServerName);
stoppedARegionServer = true;
cluster.waitForRegionServerToStop(metaServerName, 60000);
// Wait for SSH to finish
final ServerName oldServerName = metaServerName;
final ServerManager serverManager = master.getServerManager();
TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
@Override
public boolean evaluate() throws Exception {
return !serverManager.areDeadServersInProgress();
return serverManager.isServerDead(oldServerName)
&& !serverManager.areDeadServersInProgress();
}
});
TEST_UTIL.waitUntilNoRegionsInTransition(60000);
// Now, make sure meta is assigned
assertTrue("Meta should be assigned",
regionStates.isRegionOnline(HRegionInfo.FIRST_META_REGIONINFO));
// Now, make sure meta is registered in zk
metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper());
assertEquals("Meta should be not in transition", metaState.getState(), State.OPEN);
assertEquals("Meta should be assigned", metaState.getServerName(),
regionStates.getRegionServerOfRegion(HRegionInfo.FIRST_META_REGIONINFO));
assertNotEquals("Meta should be assigned on a different server",
metaState.getServerName(), metaServerName);
} finally {
if (stoppedARegionServer) {
cluster.startRegionServer();

View File

@ -44,11 +44,14 @@ import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.master.RegionState.State;
import org.apache.hadoop.hbase.protobuf.RequestConverter;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.FSTableDescriptors;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread;
import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@ -235,7 +238,8 @@ public class TestMasterFailover {
// at this point we only expect 3 regions to be assigned out
// (catalogs and namespace, + 1 online region)
assertEquals(3, cluster.countServedRegions());
HRegionInfo hriOnline = onlineTable.getRegionLocation("").getRegionInfo();
HRegionInfo hriOnline = onlineTable.getRegionLocation(
HConstants.EMPTY_START_ROW).getRegionInfo();
RegionStates regionStates = master.getAssignmentManager().getRegionStates();
RegionStateStore stateStore = master.getAssignmentManager().getRegionStateStore();
@ -281,5 +285,121 @@ public class TestMasterFailover {
// Done, shutdown the cluster
TEST_UTIL.shutdownMiniCluster();
}
/**
* Test meta in transition when master failover
*/
@Test(timeout = 180000)
public void testMetaInTransitionWhenMasterFailover() throws Exception {
final int NUM_MASTERS = 1;
final int NUM_RS = 1;
// Start the cluster
HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
log("Cluster started");
log("Moving meta off the master");
HMaster activeMaster = cluster.getMaster();
HRegionServer rs = cluster.getRegionServer(0);
ServerName metaServerName = cluster.getLiveRegionServerThreads()
.get(0).getRegionServer().getServerName();
activeMaster.move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),
Bytes.toBytes(metaServerName.getServerName()));
TEST_UTIL.waitUntilNoRegionsInTransition(60000);
assertEquals("Meta should be assigned on expected regionserver",
metaServerName, activeMaster.getMetaTableLocator()
.getMetaRegionLocation(activeMaster.getZooKeeper()));
// Now kill master, meta should remain on rs, where we placed it before.
log("Aborting master");
activeMaster.abort("test-kill");
cluster.waitForMasterToStop(activeMaster.getServerName(), 30000);
log("Master has aborted");
// meta should remain where it was
RegionState metaState =
MetaTableLocator.getMetaRegionState(rs.getZooKeeper());
assertEquals("hbase:meta should be onlined on RS",
metaState.getServerName(), rs.getServerName());
assertEquals("hbase:meta should be onlined on RS",
metaState.getState(), State.OPEN);
// Start up a new master
log("Starting up a new master");
activeMaster = cluster.startMaster().getMaster();
log("Waiting for master to be ready");
cluster.waitForActiveAndReadyMaster();
log("Master is ready");
// ensure meta is still deployed on RS
metaState =
MetaTableLocator.getMetaRegionState(activeMaster.getZooKeeper());
assertEquals("hbase:meta should be onlined on RS",
metaState.getServerName(), rs.getServerName());
assertEquals("hbase:meta should be onlined on RS",
metaState.getState(), State.OPEN);
// Update meta state as PENDING_OPEN, then kill master
// that simulates, that RS successfully deployed, but
// RPC was lost right before failure.
// region server should expire (how it can be verified?)
MetaTableLocator.setMetaLocation(activeMaster.getZooKeeper(),
rs.getServerName(), State.PENDING_OPEN);
HRegion meta = rs.getFromOnlineRegions(HRegionInfo.FIRST_META_REGIONINFO.getEncodedName());
rs.removeFromOnlineRegions(meta, null);
meta.close();
log("Aborting master");
activeMaster.abort("test-kill");
cluster.waitForMasterToStop(activeMaster.getServerName(), 30000);
log("Master has aborted");
// Start up a new master
log("Starting up a new master");
activeMaster = cluster.startMaster().getMaster();
log("Waiting for master to be ready");
cluster.waitForActiveAndReadyMaster();
log("Master is ready");
TEST_UTIL.waitUntilNoRegionsInTransition(60000);
log("Meta was assigned");
metaState =
MetaTableLocator.getMetaRegionState(activeMaster.getZooKeeper());
assertEquals("hbase:meta should be onlined on RS",
metaState.getServerName(), rs.getServerName());
assertEquals("hbase:meta should be onlined on RS",
metaState.getState(), State.OPEN);
// Update meta state as PENDING_CLOSE, then kill master
// that simulates, that RS successfully deployed, but
// RPC was lost right before failure.
// region server should expire (how it can be verified?)
MetaTableLocator.setMetaLocation(activeMaster.getZooKeeper(),
rs.getServerName(), State.PENDING_CLOSE);
log("Aborting master");
activeMaster.abort("test-kill");
cluster.waitForMasterToStop(activeMaster.getServerName(), 30000);
log("Master has aborted");
rs.getRSRpcServices().closeRegion(null, RequestConverter.buildCloseRegionRequest(
rs.getServerName(), HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()));
// Start up a new master
log("Starting up a new master");
activeMaster = cluster.startMaster().getMaster();
log("Waiting for master to be ready");
cluster.waitForActiveAndReadyMaster();
log("Master is ready");
TEST_UTIL.waitUntilNoRegionsInTransition(60000);
log("Meta was assigned");
// Done, shutdown the cluster
TEST_UTIL.shutdownMiniCluster();
}
}

View File

@ -39,12 +39,12 @@ import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.MetaMockingUtil;
import org.apache.hadoop.hbase.Server;
import org.apache.hadoop.hbase.ServerLoad;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.MetaMockingUtil;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.HConnectionTestingUtility;
import org.apache.hadoop.hbase.client.Result;
@ -157,7 +157,8 @@ public class TestMasterNoCluster {
final MockRegionServer rs2 = new MockRegionServer(conf, sn2);
// Put some data into the servers. Make it look like sn0 has the metaH
// Put data into sn2 so it looks like it has a few regions for a table named 't'.
MetaTableLocator.setMetaLocation(rs0.getZooKeeper(), rs0.getServerName());
MetaTableLocator.setMetaLocation(rs0.getZooKeeper(),
rs0.getServerName(), RegionState.State.OPEN);
final TableName tableName = TableName.valueOf("t");
Result [] results = new Result [] {
MetaMockingUtil.getMetaTableRowResult(