Apache
/
hbase
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HBASE-7948 client doesn't need to refresh meta while the region is opening 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1459130 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
sershe 2013-03-21 02:04:07 +00:00
parent 1fab626bc7
commit 66d90f865e
13 changed files with 126 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
conf/log4j.properties
View File

@ -84,6 +84,9 @@ log4j.logger.org.apache.hadoop.hbase.zookeeper.ZKUtil=INFO
log4j.logger.org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher=INFO
#log4j.logger.org.apache.hadoop.dfs=DEBUG
# Set this class to log INFO only otherwise its OTT
# Enable this to get detailed connection error/retry logging.
# log4j.logger.org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation=TRACE
# Uncomment this line to enable tracing on _every_ RPC call (this can be a lot of output)
#log4j.logger.org.apache.hadoop.ipc.HBaseServer.trace=DEBUG

4
hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionLocation.java
View File

@ -40,6 +40,10 @@ public class HRegionLocation implements Comparable<HRegionLocation> {
// Cache of the hostname + port
private String cachedHostnamePort;
public HRegionLocation(HRegionInfo regionInfo, ServerName serverName) {
this(regionInfo, serverName, HConstants.NO_SEQNUM);
}
public HRegionLocation(HRegionInfo regionInfo, ServerName serverName, long seqNum) {
this.regionInfo = regionInfo;
this.serverName = serverName;

26
hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
View File

@ -72,6 +72,7 @@ import org.apache.hadoop.hbase.client.coprocessor.Batch;
import org.apache.hadoop.hbase.exceptions.DoNotRetryIOException;
import org.apache.hadoop.hbase.exceptions.MasterNotRunningException;
import org.apache.hadoop.hbase.exceptions.RegionMovedException;
import org.apache.hadoop.hbase.exceptions.RegionOpeningException;
import org.apache.hadoop.hbase.exceptions.RegionServerStoppedException;
import org.apache.hadoop.hbase.exceptions.TableNotFoundException;
import org.apache.hadoop.hbase.exceptions.ZooKeeperConnectionException;
@ -86,6 +87,7 @@ import org.apache.hadoop.hbase.protobuf.generated.MasterMonitorProtos.GetTableDe
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.util.Addressing;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.SoftValueSortedMap;
import org.apache.hadoop.hbase.util.Triple;
@ -1065,8 +1067,8 @@ public class HConnectionManager {
return true; // don't cache it
}
// instantiate the location
HRegionLocation loc = new HRegionLocation(regionInfo, serverName,
HRegionInfo.getSeqNumDuringOpen(result));
long seqNum = HRegionInfo.getSeqNumDuringOpen(result);
HRegionLocation loc = new HRegionLocation(regionInfo, serverName, seqNum);
// cache this meta entry
cacheLocation(tableName, null, loc);
return true;
@ -1292,8 +1294,7 @@ public class HConnectionManager {
void forceDeleteCachedLocation(final byte [] tableName, final byte [] row) {
HRegionLocation rl = null;
synchronized (this.cachedRegionLocations) {
Map<byte[], HRegionLocation> tableLocations =
getTableLocations(tableName);
Map<byte[], HRegionLocation> tableLocations = getTableLocations(tableName);
// start to examine the cache. we can only do cache actions
// if there's something in the cache for this table.
if (!tableLocations.isEmpty()) {
@ -1853,7 +1854,7 @@ public class HConnectionManager {
*/
void deleteCachedLocation(HRegionInfo hri, HRegionLocation source) {
boolean isStaleDelete = false;
HRegionLocation oldLocation;
HRegionLocation oldLocation = null;
synchronized (this.cachedRegionLocations) {
Map<byte[], HRegionLocation> tableLocations =
getTableLocations(hri.getTableName());
@ -1902,6 +1903,9 @@ public class HConnectionManager {
rme.getHostname() + ":" + rme.getPort() + " according to " + source.getHostnamePort());
updateCachedLocation(
regionInfo, source, rme.getServerName(), rme.getLocationSeqNum());
} else if (RegionOpeningException.find(exception) != null) {
LOG.info("Region " + regionInfo.getRegionNameAsString() + " is being opened on "
+ source.getHostnamePort() + "; not deleting the cache entry");
} else {
deleteCachedLocation(regionInfo, source);
}
@ -2163,13 +2167,11 @@ public class HConnectionManager {
// Retry all actions in toReplay then clear it.
if (!noRetry && !toReplay.isEmpty()) {
if (isTraceEnabled) {
LOG.trace("Retrying due to errors: " + retriedErrors.getDescriptionAndClear());
LOG.trace("Retrying due to errors" + (lastRetry ? " (one last time)" : "")
+ ": " + retriedErrors.getDescriptionAndClear());
}
doRetry();
if (lastRetry) {
if (isTraceEnabled) {
LOG.trace("No more retries");
}
noRetry = true;
}
}
@ -2201,7 +2203,7 @@ public class HConnectionManager {
if (exceptions.isEmpty()) {
return "";
}
String result = makeException().getMessage();
String result = makeException().getExhaustiveDescription();
exceptions.clear();
actions.clear();
addresses.clear();
@ -2293,9 +2295,7 @@ public class HConnectionManager {
int getNumberOfCachedRegionLocations(final byte[] tableName) {
Integer key = Bytes.mapKey(tableName);
synchronized (this.cachedRegionLocations) {
Map<byte[], HRegionLocation> tableLocs =
this.cachedRegionLocations.get(key);
Map<byte[], HRegionLocation> tableLocs = this.cachedRegionLocations.get(key);
if (tableLocs == null) {
return 0;
}

12
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RetriesExhaustedWithDetailsException.java
View File

@ -121,18 +121,22 @@ extends RetriesExhaustedException {
public String getExhaustiveDescription() {
StringWriter errorWriter = new StringWriter();
PrintWriter pw = new PrintWriter(errorWriter);
for (int i = 0; i < this.exceptions.size(); ++i) {
Throwable t = this.exceptions.get(i);
Row action = this.actions.get(i);
String server = this.hostnameAndPort.get(i);
errorWriter.append("Error #" + i + " from [" + server + "] for ["
pw.append("Error");
if (this.exceptions.size() > 1) {
pw.append(" #" + i);
}
pw.append(" from [" + server + "] for ["
+ ((action == null) ? "unknown key" : Bytes.toStringBinary(action.getRow())) + "]");
if (t != null) {
PrintWriter pw = new PrintWriter(errorWriter);
t.printStackTrace(pw);
}
}
pw.flush();
}
}
return errorWriter.toString();
}

78
hbase-client/src/main/java/org/apache/hadoop/hbase/exceptions/RegionOpeningException.java Normal file
View File

@ -0,0 +1,78 @@
/*
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.exceptions;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.ipc.RemoteException;
/**
* Subclass if the server knows the region is now on another server.
* This allows the client to call the new region server without calling the master.
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class RegionOpeningException extends NotServingRegionException {
private static final Log LOG = LogFactory.getLog(RegionOpeningException.class);
private static final long serialVersionUID = -7232903522310558395L;
public RegionOpeningException(String message) {
super(message);
}
/**
* Look for a RegionOpeningException in the exception:
* - hadoop.ipc wrapped exceptions
* - nested exceptions
* Returns null if we didn't find the exception.
* TODO: this code is mostly C/Ped from RegionMovedExecption. Due to the limitations of
* generics it's not amenable to generalizing without adding parameters/isAssignableFrom.
* Might make general if used in more places.
*/
public static RegionOpeningException find(Object exception) {
if (exception == null || !(exception instanceof Throwable)) {
return null;
}
RegionOpeningException res = null;
Throwable cur = (Throwable)exception;
while (res == null && cur != null) {
if (cur instanceof RegionOpeningException) {
res = (RegionOpeningException) cur;
} else {
if (cur instanceof RemoteException) {
RemoteException re = (RemoteException) cur;
Exception e = re.unwrapRemoteException(RegionOpeningException.class);
if (e == null) {
e = re.unwrapRemoteException();
}
// unwrapRemoteException can return the exception given as a parameter when it cannot
// unwrap it. In this case, there is no need to look further
// noinspection ObjectEquality
if (e != re) {
res = find(e);
}
}
cur = cur.getCause();
}
}
return res;
}
}

8
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
View File

@ -74,6 +74,7 @@ import org.apache.hadoop.hbase.exceptions.NotServingRegionException;
import org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException;
import org.apache.hadoop.hbase.exceptions.RegionAlreadyInTransitionException;
import org.apache.hadoop.hbase.exceptions.RegionMovedException;
import org.apache.hadoop.hbase.exceptions.RegionOpeningException;
import org.apache.hadoop.hbase.RegionServerStatusProtocol;
import org.apache.hadoop.hbase.RemoteExceptionHandler;
import org.apache.hadoop.hbase.ServerName;
@ -2409,9 +2410,12 @@ public class HRegionServer implements ClientProtocol,
MovedRegionInfo moveInfo = getMovedRegion(encodedRegionName);
if (moveInfo != null) {
throw new RegionMovedException(moveInfo.getServerName(), moveInfo.getSeqNum());
} else {
throw new NotServingRegionException("Region is not online: " + encodedRegionName);
}
Boolean isOpening = this.regionsInTransitionInRS.get(Bytes.toBytes(encodedRegionName));
if (isOpening != null && isOpening.booleanValue()) {
throw new RegionOpeningException("Region is being opened: " + encodedRegionName);
}
throw new NotServingRegionException("Region is not online: " + encodedRegionName);
}
return region;
}

19
hbase-server/src/test/java/org/apache/hadoop/hbase/TestHRegionLocation.java
View File

@ -36,21 +36,17 @@ public class TestHRegionLocation {
@Test
public void testHashAndEqualsCode() {
ServerName hsa1 = new ServerName("localhost", 1234, -1L);
HRegionLocation hrl1 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO,
hsa1, HConstants.NO_SEQNUM);
HRegionLocation hrl2 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO,
hsa1, HConstants.NO_SEQNUM);
HRegionLocation hrl1 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, hsa1);
HRegionLocation hrl2 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, hsa1);
assertEquals(hrl1.hashCode(), hrl2.hashCode());
assertTrue(hrl1.equals(hrl2));
HRegionLocation hrl3 = new HRegionLocation(HRegionInfo.ROOT_REGIONINFO,
hsa1, HConstants.NO_SEQNUM);
HRegionLocation hrl3 = new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa1);
assertNotSame(hrl1, hrl3);
// They are equal because they have same location even though they are
// carrying different regions or timestamp.
assertTrue(hrl1.equals(hrl3));
ServerName hsa2 = new ServerName("localhost", 12345, -1L);
HRegionLocation hrl4 = new HRegionLocation(HRegionInfo.ROOT_REGIONINFO,
hsa2, HConstants.NO_SEQNUM);
HRegionLocation hrl4 = new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa2);
// These have same HRI but different locations so should be different.
assertFalse(hrl3.equals(hrl4));
HRegionLocation hrl5 = new HRegionLocation(hrl4.getRegionInfo(),
@ -61,8 +57,7 @@ public class TestHRegionLocation {
@Test
public void testToString() {
ServerName hsa1 = new ServerName("localhost", 1234, -1L);
HRegionLocation hrl1 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO,
hsa1, HConstants.NO_SEQNUM);
HRegionLocation hrl1 = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, hsa1);
System.out.println(hrl1.toString());
}
@ -70,10 +65,10 @@ public class TestHRegionLocation {
public void testCompareTo() {
ServerName hsa1 = new ServerName("localhost", 1234, -1L);
HRegionLocation hsl1 =
new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa1, HConstants.NO_SEQNUM);
new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa1);
ServerName hsa2 = new ServerName("localhost", 1235, -1L);
HRegionLocation hsl2 =
new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa2, HConstants.NO_SEQNUM);
new HRegionLocation(HRegionInfo.ROOT_REGIONINFO, hsa2);
assertTrue(hsl1.compareTo(hsl1) == 0);
assertTrue(hsl2.compareTo(hsl2) == 0);
int compare1 = hsl1.compareTo(hsl2);

2
hbase-server/src/test/java/org/apache/hadoop/hbase/catalog/TestCatalogTracker.java
View File

@ -330,7 +330,7 @@ public class TestCatalogTracker {
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, HConstants.NO_SEQNUM);
new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, SN);
Mockito.when(connection.getRegionLocation((byte[]) Mockito.any(),
(byte[]) Mockito.any(), Mockito.anyBoolean())).
thenReturn(anyLocation);

2
hbase-server/src/test/java/org/apache/hadoop/hbase/catalog/TestMetaReaderEditorNoCluster.java
View File

@ -178,7 +178,7 @@ public class TestMetaReaderEditorNoCluster {
// 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, HConstants.NO_SEQNUM);
new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, sn);
// 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

2
hbase-server/src/test/java/org/apache/hadoop/hbase/client/HConnectionTestingUtility.java
View File

@ -99,7 +99,7 @@ public class HConnectionTestingUtility {
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, HConstants.NO_SEQNUM);
final HRegionLocation loc = new HRegionLocation(hri, sn);
Mockito.when(c.getRegionLocation((byte[]) Mockito.any(),
(byte[]) Mockito.any(), Mockito.anyBoolean())).
thenReturn(loc);

2
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestHCM.java
View File

@ -424,7 +424,7 @@ public class TestHCM {
assertNotNull(location);
HRegionLocation anySource = new HRegionLocation(location.getRegionInfo(), new ServerName(
location.getHostname(), location.getPort() - 1, 0L), HConstants.NO_SEQNUM);
location.getHostname(), location.getPort() - 1, 0L));
// Same server as already in cache reporting - overwrites any value despite seqNum.
int nextPort = location.getPort() + 1;

2
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestLoadIncrementalHFilesSplitRecovery.java
View File

@ -271,7 +271,7 @@ public class TestLoadIncrementalHFilesSplitRecovery {
Mockito.doNothing().when(c).close();
// Make it so we return a particular location when asked.
final HRegionLocation loc = new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO,
new ServerName("example.org", 1234, 0), HConstants.NO_SEQNUM);
new ServerName("example.org", 1234, 0));
Mockito.when(c.getRegionLocation((byte[]) Mockito.any(),
(byte[]) Mockito.any(), Mockito.anyBoolean())).
thenReturn(loc);

2
hbase-server/src/test/resources/log4j.properties
View File

@ -66,3 +66,5 @@ log4j.logger.org.apache.hadoop.hbase=DEBUG
#See HBASE-4709
log4j.org.apache.hadoop.metrics2.impl.MetricsSystemImpl=ERROR
log4j.org.apache.hadoop.metrics2.util.MBeans=ERROR
# Enable this to get detailed connection error/retry logging.
# log4j.logger.org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation=TRACE