/*
* Copyright 2011 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 java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests unhandled exceptions thrown by coprocessors running on a regionserver..
* Expected result is that the regionserver will abort with an informative
* error message describing the set of its loaded coprocessors for crash
* diagnosis. (HBASE-4014).
*/
public class TestRegionServerCoprocessorExceptionWithAbort {
private static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
@BeforeClass
public static void setupBeforeClass() throws Exception {
// set configure to indicate which cp should be loaded
Configuration conf = TEST_UTIL.getConfiguration();
conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
BuggyRegionObserver.class.getName());
conf.set("hbase.coprocessor.abortonerror", "true");
TEST_UTIL.startMiniCluster(2);
}
@AfterClass
public static void teardownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
@Test(timeout=30000)
public void testExceptionFromCoprocessorDuringPut()
throws IOException {
// When we try to write to TEST_TABLE, the buggy coprocessor will
// cause a NullPointerException, which will cause the regionserver (which
// hosts the region we attempted to write to) to abort.
byte[] TEST_TABLE = Bytes.toBytes("observed_table");
byte[] TEST_FAMILY = Bytes.toBytes("aaa");
HTable table = TEST_UTIL.createTable(TEST_TABLE, TEST_FAMILY);
TEST_UTIL.waitUntilAllRegionsAssigned(
TEST_UTIL.createMultiRegions(table, TEST_FAMILY));
// Note which regionServer will abort (after put is attempted).
HRegionServer regionServer =
TEST_UTIL.getRSForFirstRegionInTable(TEST_TABLE);
try {
final byte[] ROW = Bytes.toBytes("aaa");
Put put = new Put(ROW);
put.add(TEST_FAMILY, ROW, ROW);
table.put(put);
} catch (IOException e) {
fail("put() failed: " + e);
}
// Wait up to 30 seconds for regionserver to abort.
boolean regionServerAborted = false;
for (int i = 0; i < 30; i++) {
if (regionServer.isAborted()) {
regionServerAborted = true;
break;
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
fail("InterruptedException while waiting for regionserver " +
"zk node to be deleted.");
}
}
assertTrue("RegionServer aborted on coprocessor exception, as expected.",
regionServerAborted);
}
public static class BuggyRegionObserver extends SimpleRegionObserver {
@Override
public void prePut(final ObserverContext<RegionCoprocessorEnvironment> c,
final Put put, final WALEdit edit,
final boolean writeToWAL) {
String tableName =
c.getEnvironment().getRegion().getRegionInfo().getTableNameAsString();
if (tableName.equals("observed_table")) {
Integer i = null;
i = i + 1;
}
}
}
}