[GitHub] [cassandra] smiklosovic commented on a diff in pull request #2189: Fix disk_failure_policy die to stop gossip, native transport and JVM

["smiklosovic (via GitHub)" <gi...@apache.org>]

smiklosovic commented on code in PR #2189:
URL: https://github.com/apache/cassandra/pull/2189#discussion_r1122728821


##########
test/unit/org/apache/cassandra/service/DefaultFSErrorHandlerTest.java:
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@@ -0,0 +1,121 @@
+/*
+ * 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.cassandra.service;
+
+import java.io.IOException;
+
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import org.apache.cassandra.SchemaLoader;
+import org.apache.cassandra.config.Config;
+import org.apache.cassandra.config.DatabaseDescriptor;
+import org.apache.cassandra.exceptions.ConfigurationException;
+import org.apache.cassandra.gms.Gossiper;
+import org.apache.cassandra.io.FSErrorHandler;
+import org.apache.cassandra.io.FSReadError;
+import org.apache.cassandra.io.sstable.CorruptSSTableException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class DefaultFSErrorHandlerTest
+{
+    FSErrorHandler handler = new DefaultFSErrorHandler();
+    Config.DiskFailurePolicy oldDiskPolicy;
+
+    @BeforeClass
+    public static void defineSchema() throws ConfigurationException
+    {
+        SchemaLoader.prepareServer();
+        CassandraDaemon daemon = new CassandraDaemon();
+        daemon.completeSetup(); //startup must be completed, otherwise FS error will kill JVM regardless of failure policy
+        StorageService.instance.registerDaemon(daemon);
+        StorageService.instance.initServer();
+    }
+
+    @AfterClass
+    public static void shutdown()
+    {
+        StorageService.instance.stopClient();
+    }
+
+    @Before
+    public void setup()
+    {
+        StorageService.instance.startGossiping();
+        assertTrue(Gossiper.instance.isEnabled());
+        oldDiskPolicy = DatabaseDescriptor.getDiskFailurePolicy();
+    }
+
+    @After
+    public void teardown()
+    {
+        DatabaseDescriptor.setDiskFailurePolicy(oldDiskPolicy);
+    }
+
+    @Test
+    public void testFSErrorPolicyIgnore()
+    {
+        assertEquals(DatabaseDescriptor.getDiskFailurePolicy(), Config.DiskFailurePolicy.ignore);
+        handler.handleFSError(new FSReadError(new IOException(), "blah"));
+        // error ignored, gossip not disabled
+        assertTrue(Gossiper.instance.isEnabled());
+    }
+
+    @Test
+    public void testFSErrorPolicyStop()
+    {

Review Comment:
   Yes, I agree. 



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