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HBASE-19508 ReadOnlyConfiguration throws exception if any Configuration in current context calls addDefautlResource 

Signed-off-by: Peter Somogyi <psomogyi@cloudera.com>
This commit is contained in:
Michael Stack 2017-12-13 09:49:42 -08:00
parent 78ff501ad8
commit b475f15f25
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GPG Key ID: 9816C7FC8ACC93D2
2 changed files with 50 additions and 1 deletions
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6
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/ReadOnlyConfiguration.java
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@ -88,7 +88,11 @@ class ReadOnlyConfiguration extends Configuration {
@Override @Override
public void reloadConfiguration() { public void reloadConfiguration() {
throw new UnsupportedOperationException("Read-only Configuration"); // This is a write operation. We need to allow it though because if any Configuration in
// current JVM context calls addDefaultResource, this forces a reload of all Configurations
// (all Configurations are 'registered' by the default constructor. Rather than turn
// somersaults, let this 'write' operation through.
this.conf.reloadConfiguration();
} }
@Override @Override

45
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestReadOnlyConfiguration.java Normal file
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@ -0,0 +1,45 @@
/*
* Copyright The Apache Software Foundation
*
* 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 org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CategoryBasedTimeout;
import org.apache.hadoop.hbase.testclassification.RegionServerTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
import org.junit.rules.TestRule;
@Category({RegionServerTests.class, SmallTests.class})
public class TestReadOnlyConfiguration {
@Rule public TestName name = new TestName();
@Rule public final TestRule timeout = CategoryBasedTimeout.builder().
withTimeout(this.getClass()).
withLookingForStuckThread(true).
build();
@Test
public void testAddDefaultResource() {
Configuration configuration = new Configuration();
Configuration readOnlyConf = new ReadOnlyConfiguration(configuration);
configuration.addDefaultResource("abc.xml");
}
}