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Posted to commits@hbase.apache.org by hu...@apache.org on 2020/12/11 18:24:17 UTC
[hbase] branch master updated: Revert "HBASE-25293 Followup jira to
address the client handling issue when chaning from meta replica to
non-meta-replica at the server side."
This is an automated email from the ASF dual-hosted git repository.
huaxiangsun pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/hbase.git
The following commit(s) were added to refs/heads/master by this push:
new e047929 Revert "HBASE-25293 Followup jira to address the client handling issue when chaning from meta replica to non-meta-replica at the server side."
e047929 is described below
commit e04792959aa9f7440fcdc857233769892a43c60a
Author: Huaxiang Sun <hu...@apache.com>
AuthorDate: Thu Dec 10 10:12:53 2020 -0800
Revert "HBASE-25293 Followup jira to address the client handling issue when chaning from meta replica to non-meta-replica at the server side."
This reverts commit c1aa3b24e930e2c47ff4d7f6e286cb450458dffc.
---
.../hbase/client/AsyncNonMetaRegionLocator.java | 2 +-
.../client/CatalogReplicaLoadBalanceSelector.java | 2 -
.../CatalogReplicaLoadBalanceSimpleSelector.java | 19 +--
...estCatalogReplicaLoadBalanceSimpleSelector.java | 132 ---------------------
4 files changed, 11 insertions(+), 144 deletions(-)
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.java
index 1c686ac..2c2520f 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.java
@@ -211,7 +211,7 @@ class AsyncNonMetaRegionLocator {
this.metaReplicaSelector = CatalogReplicaLoadBalanceSelectorFactory.createSelector(
replicaSelectorClass, META_TABLE_NAME, conn, () -> {
- int numOfReplicas = CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS;
+ int numOfReplicas = 1;
try {
RegionLocations metaLocations = conn.registry.getMetaRegionLocations().get(
conn.connConf.getReadRpcTimeoutNs(), TimeUnit.NANOSECONDS);
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSelector.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSelector.java
index 27be88a..c3ce868 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSelector.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSelector.java
@@ -28,8 +28,6 @@ import org.apache.yetus.audience.InterfaceAudience;
@InterfaceAudience.Private
interface CatalogReplicaLoadBalanceSelector {
- int UNINITIALIZED_NUM_OF_REPLICAS = -1;
-
/**
* This method is called when input location is stale, i.e, when clients run into
* org.apache.hadoop.hbase.NotServingRegionException.
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSimpleSelector.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSimpleSelector.java
index 01996b3..bc82640 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSimpleSelector.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CatalogReplicaLoadBalanceSimpleSelector.java
@@ -108,6 +108,7 @@ class CatalogReplicaLoadBalanceSimpleSelector implements
private final TableName tableName;
private final IntSupplier getNumOfReplicas;
private volatile boolean isStopped = false;
+ private final static int UNINITIALIZED_NUM_OF_REPLICAS = -1;
CatalogReplicaLoadBalanceSimpleSelector(TableName tableName, AsyncConnectionImpl conn,
IntSupplier getNumOfReplicas) {
@@ -116,7 +117,7 @@ class CatalogReplicaLoadBalanceSimpleSelector implements
this.getNumOfReplicas = getNumOfReplicas;
// This numOfReplicas is going to be lazy initialized.
- this.numOfReplicas = CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS;
+ this.numOfReplicas = UNINITIALIZED_NUM_OF_REPLICAS;
// Start chores
this.conn.getChoreService().scheduleChore(getCacheCleanupChore(this));
this.conn.getChoreService().scheduleChore(getRefreshReplicaCountChore(this));
@@ -145,7 +146,7 @@ class CatalogReplicaLoadBalanceSimpleSelector implements
*/
private int getRandomReplicaId() {
int cachedNumOfReplicas = this.numOfReplicas;
- if (cachedNumOfReplicas == CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS) {
+ if (cachedNumOfReplicas == UNINITIALIZED_NUM_OF_REPLICAS) {
cachedNumOfReplicas = refreshCatalogReplicaCount();
this.numOfReplicas = cachedNumOfReplicas;
}
@@ -261,16 +262,16 @@ class CatalogReplicaLoadBalanceSimpleSelector implements
private int refreshCatalogReplicaCount() {
int newNumOfReplicas = this.getNumOfReplicas.getAsInt();
LOG.debug("Refreshed replica count {}", newNumOfReplicas);
- // If the returned number of replicas is -1, it is caused by failure to fetch the
- // replica count. Do not update the numOfReplicas in this case.
- if (newNumOfReplicas == CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS) {
- LOG.error("Failed to fetch Table {}'s region replica count", tableName);
- return this.numOfReplicas;
+ if (newNumOfReplicas == 1) {
+ LOG.warn("Table {}'s region replica count is 1, maybe a misconfiguration or failure to "
+ + "fetch the replica count", tableName);
}
-
int cachedNumOfReplicas = this.numOfReplicas;
+
+ // If the returned number of replicas is 1, it is mostly caused by failure to fetch the
+ // replica count. Do not update the numOfReplicas in this case.
if ((cachedNumOfReplicas == UNINITIALIZED_NUM_OF_REPLICAS) ||
- (cachedNumOfReplicas != newNumOfReplicas)) {
+ ((cachedNumOfReplicas != newNumOfReplicas) && (newNumOfReplicas != 1))) {
this.numOfReplicas = newNumOfReplicas;
}
return newNumOfReplicas;
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCatalogReplicaLoadBalanceSimpleSelector.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCatalogReplicaLoadBalanceSimpleSelector.java
deleted file mode 100644
index 6b14286..0000000
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCatalogReplicaLoadBalanceSimpleSelector.java
+++ /dev/null
@@ -1,132 +0,0 @@
-/**
- * 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.client;
-
-import static org.apache.hadoop.hbase.HConstants.EMPTY_START_ROW;
-import static org.apache.hadoop.hbase.TableName.META_TABLE_NAME;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
-import java.io.IOException;
-import java.util.concurrent.TimeUnit;
-import org.apache.commons.io.IOUtils;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.HBaseClassTestRule;
-import org.apache.hadoop.hbase.HBaseTestingUtility;
-import org.apache.hadoop.hbase.RegionLocations;
-import org.apache.hadoop.hbase.TableName;
-import org.apache.hadoop.hbase.security.User;
-import org.apache.hadoop.hbase.testclassification.ClientTests;
-import org.apache.hadoop.hbase.testclassification.MediumTests;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.ClassRule;
-import org.junit.Test;
-import org.junit.experimental.categories.Category;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-@Category({ MediumTests.class, ClientTests.class })
-public class TestCatalogReplicaLoadBalanceSimpleSelector {
-
- @ClassRule
- public static final HBaseClassTestRule CLASS_RULE =
- HBaseClassTestRule.forClass(TestCatalogReplicaLoadBalanceSimpleSelector.class);
-
- private static final Logger LOG = LoggerFactory.getLogger(
- TestCatalogReplicaLoadBalanceSimpleSelector.class);
-
- private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
-
- private static final int NB_SERVERS = 4;
- private static int numOfMetaReplica = NB_SERVERS - 1;
-
- private static AsyncConnectionImpl CONN;
-
- private static ConnectionRegistry registry;
- private static Admin admin;
-
- @BeforeClass
- public static void setUp() throws Exception {
- Configuration conf = TEST_UTIL.getConfiguration();
-
- TEST_UTIL.startMiniCluster(NB_SERVERS);
- admin = TEST_UTIL.getAdmin();
- admin.balancerSwitch(false, true);
-
- // Enable hbase:meta replication.
- HBaseTestingUtility.setReplicas(admin, TableName.META_TABLE_NAME, numOfMetaReplica);
- TEST_UTIL.waitFor(30000, () -> TEST_UTIL.getMiniHBaseCluster().getRegions(
- TableName.META_TABLE_NAME).size() >= numOfMetaReplica);
-
- registry = ConnectionRegistryFactory.getRegistry(TEST_UTIL.getConfiguration());
- CONN = new AsyncConnectionImpl(conf, registry,
- registry.getClusterId().get(), null, User.getCurrent());
- }
-
- @AfterClass
- public static void tearDown() throws Exception {
- IOUtils.closeQuietly(CONN);
- TEST_UTIL.shutdownMiniCluster();
- }
-
- @Test
- public void testMetaChangeFromReplicaNoReplica() throws IOException, InterruptedException {
- String replicaSelectorClass = CONN.getConfiguration().
- get(RegionLocator.LOCATOR_META_REPLICAS_MODE_LOADBALANCE_SELECTOR,
- CatalogReplicaLoadBalanceSimpleSelector.class.getName());
-
- CatalogReplicaLoadBalanceSelector metaSelector = CatalogReplicaLoadBalanceSelectorFactory
- .createSelector(replicaSelectorClass, META_TABLE_NAME, CONN, () -> {
- int numOfReplicas = CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS;
- try {
- RegionLocations metaLocations = CONN.registry.getMetaRegionLocations().get
- (CONN.connConf.getReadRpcTimeoutNs(), TimeUnit.NANOSECONDS);
- numOfReplicas = metaLocations.size();
- } catch (Exception e) {
- LOG.error("Failed to get table {}'s region replication, ", META_TABLE_NAME, e);
- }
- return numOfReplicas;
- });
-
- assertNotEquals(
- metaSelector.select(TableName.valueOf("test"), EMPTY_START_ROW, RegionLocateType.CURRENT),
- RegionReplicaUtil.DEFAULT_REPLICA_ID);
-
- // Change to No meta replica
- HBaseTestingUtility.setReplicas(admin, TableName.META_TABLE_NAME, 1);
- TEST_UTIL.waitFor(30000, () -> TEST_UTIL.getMiniHBaseCluster().getRegions(
- TableName.META_TABLE_NAME).size() == 1);
-
- CatalogReplicaLoadBalanceSelector metaSelectorWithNoReplica =
- CatalogReplicaLoadBalanceSelectorFactory.createSelector(
- replicaSelectorClass, META_TABLE_NAME, CONN, () -> {
- int numOfReplicas = CatalogReplicaLoadBalanceSelector.UNINITIALIZED_NUM_OF_REPLICAS;
- try {
- RegionLocations metaLocations = CONN.registry.getMetaRegionLocations().get(
- CONN.connConf.getReadRpcTimeoutNs(), TimeUnit.NANOSECONDS);
- numOfReplicas = metaLocations.size();
- } catch (Exception e) {
- LOG.error("Failed to get table {}'s region replication, ", META_TABLE_NAME, e);
- }
- return numOfReplicas;
- });
- assertEquals(
- metaSelectorWithNoReplica.select(TableName.valueOf("test"), EMPTY_START_ROW,
- RegionLocateType.CURRENT), RegionReplicaUtil.DEFAULT_REPLICA_ID);
- }
-}