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HBASE-12936 Quota support for namespace should take region merge into account

This commit is contained in:
tedyu 2015-01-29 09:12:24 -08:00
parent 7c8aa2e963
commit 6bfa8ea977
6 changed files with 133 additions and 7 deletions
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5
hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
View File

@ -2802,7 +2802,12 @@ public class AssignmentManager {
errorMsg = onRegionMergePONR(current, hri, serverName, transition);
break;
case MERGED:
try {
errorMsg = onRegionMerged(current, hri, serverName, transition);
regionStateListener.onRegionMerged(hri);
} catch (IOException exp) {
errorMsg = StringUtils.stringifyException(exp);
}
break;
case MERGE_REVERTED:
errorMsg = onRegionMergeReverted(current, hri, serverName, transition);

13
hbase-server/src/main/java/org/apache/hadoop/hbase/namespace/NamespaceAuditor.java
View File

@ -108,7 +108,18 @@ public class NamespaceAuditor {
throw new IOException(
"Split operation is being performed even before namespace auditor is initialized.");
} else if (!stateManager
.checkAndUpdateNamespaceRegionCount(hri.getTable(), hri.getRegionName())) {
.checkAndUpdateNamespaceRegionCount(hri.getTable(), hri.getRegionName(), 1)) {
throw new QuotaExceededException("Region split not possible for :" + hri.getEncodedName()
+ " as quota limits are exceeded ");
}
}
public void updateQuotaForRegionMerge(HRegionInfo hri) throws IOException {
if (!stateManager.isInitialized()) {
throw new IOException(
"Merge operation is being performed even before namespace auditor is initialized.");
} else if (!stateManager
.checkAndUpdateNamespaceRegionCount(hri.getTable(), hri.getRegionName(), -1)) {
throw new QuotaExceededException("Region split not possible for :" + hri.getEncodedName()
+ " as quota limits are exceeded ");
}

8
hbase-server/src/main/java/org/apache/hadoop/hbase/namespace/NamespaceStateManager.java
View File

@ -79,17 +79,19 @@ class NamespaceStateManager {
*
* @param TableName
* @param regionName
* @param incr
* @return true, if region can be added to table.
* @throws IOException Signals that an I/O exception has occurred.
*/
synchronized boolean checkAndUpdateNamespaceRegionCount(TableName name,
byte[] regionName) throws IOException {
byte[] regionName, int incr) throws IOException {
String namespace = name.getNamespaceAsString();
NamespaceDescriptor nspdesc = getNamespaceDescriptor(namespace);
if (nspdesc != null) {
NamespaceTableAndRegionInfo currentStatus;
currentStatus = getState(namespace);
if (currentStatus.getRegionCount() >= TableNamespaceManager.getMaxRegions(nspdesc)) {
if (incr > 0 &&
currentStatus.getRegionCount() >= TableNamespaceManager.getMaxRegions(nspdesc)) {
LOG.warn("The region " + Bytes.toStringBinary(regionName)
+ " cannot be created. The region count will exceed quota on the namespace. "
+ "This may be transient, please retry later if there are any ongoing split"
@ -98,7 +100,7 @@ class NamespaceStateManager {
}
NamespaceTableAndRegionInfo nsInfo = nsStateCache.get(namespace);
if (nsInfo != null) {
nsInfo.incRegionCountForTable(name, 1);
nsInfo.incRegionCountForTable(name, incr);
} else {
LOG.warn("Namespace state found null for namespace : " + namespace);
}

6
hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/MasterQuotaManager.java
View File

@ -313,6 +313,12 @@ public class MasterQuotaManager implements RegionStateListener {
}
}
public void onRegionMerged(HRegionInfo hri) throws IOException {
if (enabled) {
namespaceQuotaManager.updateQuotaForRegionMerge(hri);
}
}
public void onRegionSplit(HRegionInfo hri) throws IOException {
if (enabled) {
namespaceQuotaManager.checkQuotaToSplitRegion(hri);

7
hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/RegionStateListener.java
View File

@ -44,4 +44,11 @@ public interface RegionStateListener {
*/
void onRegionSplitReverted(HRegionInfo hri) throws IOException;
/**
* Process region merge event.
*
* @param hri An instance of HRegionInfo
* @throws IOException
*/
void onRegionMerged(HRegionInfo hri) throws IOException;
}

99
hbase-server/src/test/java/org/apache/hadoop/hbase/namespace/TestNamespaceAuditor.java
View File

@ -31,13 +31,17 @@ import java.util.concurrent.CountDownLatch;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Coprocessor;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter;
@ -47,12 +51,19 @@ import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.coprocessor.BaseRegionObserver;
import org.apache.hadoop.hbase.coprocessor.BaseRegionServerObserver;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.RegionServerCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.RegionServerObserver;
import org.apache.hadoop.hbase.coprocessor.TestRegionServerObserver.CPRegionServerObserver;
import org.apache.hadoop.hbase.mapreduce.TableInputFormatBase;
import org.apache.hadoop.hbase.master.TableNamespaceManager;
import org.apache.hadoop.hbase.quotas.QuotaUtil;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.RegionServerCoprocessorHost;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.FSUtils;
@ -74,7 +85,10 @@ public class TestNamespaceAuditor {
public static void before() throws Exception {
UTIL.getConfiguration().set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
CustomObserver.class.getName());
UTIL.getConfiguration().setBoolean(QuotaUtil.QUOTA_CONF_KEY, true);
Configuration conf = UTIL.getConfiguration();
conf.setBoolean(QuotaUtil.QUOTA_CONF_KEY, true);
conf.setClass("hbase.coprocessor.regionserver.classes", CPRegionServerObserver.class,
RegionServerObserver.class);
UTIL.startMiniCluster(1, 3);
UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {
@Override
@ -242,6 +256,84 @@ public class TestNamespaceAuditor {
assertNull("Namespace state not found to be null.", stateInfo);
}
public static class CPRegionServerObserver extends BaseRegionServerObserver {
private boolean shouldFailMerge = false;
public void failMerge(boolean fail) {
shouldFailMerge = fail;
}
@Override
public void preMerge(ObserverContext<RegionServerCoprocessorEnvironment> ctx, HRegion regionA,
HRegion regionB) throws IOException {
if (shouldFailMerge) {
throw new IOException("fail merge");
}
}
}
@Test
public void testRegionMerge() throws Exception {
String nsp1 = prefix + "_regiontest";
NamespaceDescriptor nspDesc = NamespaceDescriptor.create(nsp1)
.addConfiguration(TableNamespaceManager.KEY_MAX_REGIONS, "3")
.addConfiguration(TableNamespaceManager.KEY_MAX_TABLES, "2").build();
admin.createNamespace(nspDesc);
final TableName tableTwo = TableName.valueOf(nsp1 + TableName.NAMESPACE_DELIM + "table2");
byte[] columnFamily = Bytes.toBytes("info");
HTableDescriptor tableDescOne = new HTableDescriptor(tableTwo);
tableDescOne.addFamily(new HColumnDescriptor(columnFamily));
NamespaceTableAndRegionInfo stateInfo;
final int initialRegions = 3;
admin.createTable(tableDescOne, Bytes.toBytes("1"), Bytes.toBytes("2000"), initialRegions);
Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
HTable htable = (HTable)connection.getTable(tableTwo);
UTIL.loadNumericRows(htable, Bytes.toBytes("info"), 1, 1000);
admin.flush(tableTwo);
stateInfo = getNamespaceState(nsp1);
List<HRegionInfo> hris = admin.getTableRegions(tableTwo);
// merge the two regions
admin.mergeRegions(hris.get(0).getEncodedNameAsBytes(),
hris.get(1).getEncodedNameAsBytes(), false);
while (admin.getTableRegions(tableTwo).size() == initialRegions) {
Thread.sleep(100);
}
hris = admin.getTableRegions(tableTwo);
assertEquals(initialRegions-1, hris.size());
HRegion actualRegion = UTIL.getHBaseCluster().getRegions(tableTwo).get(0);
byte[] splitKey = getSplitKey(actualRegion.getStartKey(), actualRegion.getEndKey());
admin.split(tableTwo, Bytes.toBytes("500"));
while (admin.getTableRegions(tableTwo).size() != initialRegions) {
Thread.sleep(100);
}
assertEquals(initialRegions, admin.getTableRegions(tableTwo).size());
// fail region merge through Coprocessor hook
MiniHBaseCluster cluster = UTIL.getHBaseCluster();
hris = admin.getTableRegions(tableTwo);
HRegionServer regionServer = cluster.getRegionServer(
cluster.getServerWith(hris.get(0).getRegionName()));
RegionServerCoprocessorHost cpHost = regionServer.getRegionServerCoprocessorHost();
Coprocessor coprocessor = cpHost.findCoprocessor(CPRegionServerObserver.class.getName());
CPRegionServerObserver regionServerObserver = (CPRegionServerObserver) coprocessor;
regionServerObserver.failMerge(true);
admin.mergeRegions(hris.get(0).getEncodedNameAsBytes(),
hris.get(1).getEncodedNameAsBytes(), false);
assertEquals(initialRegions, admin.getTableRegions(tableTwo).size());
// verify that we cannot split
actualRegion = UTIL.getHBaseCluster().getRegions(tableTwo).get(0);
admin.split(tableTwo, TableInputFormatBase.getSplitKey(actualRegion.getStartKey(),
actualRegion.getEndKey(), true));
while (admin.getTableRegions(tableTwo).size() != initialRegions) {
Thread.sleep(100);
}
assertEquals(initialRegions, admin.getTableRegions(tableTwo).size());
regionServerObserver.failMerge(true);
htable.close();
}
@Test
public void testRegionOperations() throws Exception {
String nsp1 = prefix + "_regiontest";
@ -289,8 +381,10 @@ public class TestNamespaceAuditor {
admin.split(tableOne, getSplitKey(actualRegion.getStartKey(), actualRegion.getEndKey()));
observer.postSplit.await();
// Make sure no regions have been added.
assertEquals(2, admin.getTableRegions(tableOne).size());
List<HRegionInfo> hris = admin.getTableRegions(tableOne);
assertEquals(2, hris.size());
assertTrue("split completed", observer.preSplitBeforePONR.getCount() == 1);
htable.close();
}
@ -313,6 +407,7 @@ public class TestNamespaceAuditor {
public static class CustomObserver extends BaseRegionObserver{
volatile CountDownLatch postSplit;
volatile CountDownLatch preSplitBeforePONR;
@Override
public void postCompleteSplit(ObserverContext<RegionCoprocessorEnvironment> ctx)
throws IOException {