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HBASE-21659 Avoid to load duplicate coprocessors in system config and table descriptor

This commit is contained in:
Guanghao Zhang 2018-12-29 11:51:32 +08:00
parent 3ab895979b
commit ec948f5d90
2 changed files with 88 additions and 0 deletions
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11
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
View File

@ -74,6 +74,9 @@ public abstract class CoprocessorHost<C extends Coprocessor, E extends Coprocess
public static final String USER_COPROCESSORS_ENABLED_CONF_KEY =
"hbase.coprocessor.user.enabled";
public static final boolean DEFAULT_USER_COPROCESSORS_ENABLED = true;
public static final String SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR =
"hbase.skip.load.duplicate.table.coprocessor";
public static final boolean DEFAULT_SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR = false;
private static final Logger LOG = LoggerFactory.getLogger(CoprocessorHost.class);
protected Abortable abortable;
@ -200,6 +203,14 @@ public abstract class CoprocessorHost<C extends Coprocessor, E extends Coprocess
LOG.debug("Loading coprocessor class " + className + " with path " +
path + " and priority " + priority);
boolean skipLoadDuplicateCoprocessor = conf.getBoolean(SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR,
DEFAULT_SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR);
if (skipLoadDuplicateCoprocessor && findCoprocessor(className) != null) {
// If already loaded will just continue
LOG.warn("Attempted duplicate loading of {}; skipped", className);
return null;
}
ClassLoader cl = null;
if (path == null) {
try {

77
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionCoprocessorHost.java Normal file
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@ -0,0 +1,77 @@
/**
* 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.coprocessor;
import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.COPROCESSORS_ENABLED_CONF_KEY;
import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.REGION_COPROCESSOR_CONF_KEY;
import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR;
import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.USER_COPROCESSORS_ENABLED_CONF_KEY;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.RegionInfoBuilder;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category({SmallTests.class})
public class TestRegionCoprocessorHost {
@ClassRule
public static final HBaseClassTestRule CLASS_RULE =
HBaseClassTestRule.forClass(TestRegionCoprocessorHost.class);
@Test
public void testLoadDuplicateCoprocessor() throws Exception {
Configuration conf = HBaseConfiguration.create();
conf.setBoolean(COPROCESSORS_ENABLED_CONF_KEY, true);
conf.setBoolean(USER_COPROCESSORS_ENABLED_CONF_KEY, true);
conf.setBoolean(SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR, true);
conf.set(REGION_COPROCESSOR_CONF_KEY, SimpleRegionObserver.class.getName());
TableName tableName = TableName.valueOf("testDoubleLoadingCoprocessor");
RegionInfo regionInfo = RegionInfoBuilder.newBuilder(tableName).build();
// config a same coprocessor with system coprocessor
TableDescriptor tableDesc = TableDescriptorBuilder.newBuilder(tableName)
.setCoprocessor(SimpleRegionObserver.class.getName()).build();
HRegion region = mock(HRegion.class);
when(region.getRegionInfo()).thenReturn(regionInfo);
when(region.getTableDescriptor()).thenReturn(tableDesc);
RegionServerServices rsServices = mock(RegionServerServices.class);
RegionCoprocessorHost host = new RegionCoprocessorHost(region, rsServices, conf);
// Only one coprocessor SimpleRegionObserver loaded
assertEquals(1, host.coprocEnvironments.size());
// Allow to load duplicate coprocessor
conf.setBoolean(SKIP_LOAD_DUPLICATE_TABLE_COPROCESSOR, false);
host = new RegionCoprocessorHost(region, rsServices, conf);
// Two duplicate coprocessors loaded
assertEquals(2, host.coprocEnvironments.size());
}
}