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From GitBox <...@apache.org>
Subject [GitHub] [ignite] samaitra commented on a change in pull request #6490: IGNITE-7285 Add default query timeout
Date Mon, 28 Oct 2019 03:40:07 GMT
samaitra commented on a change in pull request #6490: IGNITE-7285 Add default query timeout
URL: https://github.com/apache/ignite/pull/6490#discussion_r339394035
 
 

 ##########
 File path: modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/IgniteCacheDistributedQueryDefaultTimeoutSelfTest.java
 ##########
 @@ -0,0 +1,199 @@
+/*
+ * 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.ignite.internal.processors.cache.distributed.near;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+import javax.cache.CacheException;
+import org.apache.ignite.Ignite;
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.cache.query.QueryCursor;
+import org.apache.ignite.cache.query.SqlFieldsQuery;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.internal.IgniteEx;
+import org.apache.ignite.cache.query.QueryCancelledException;
+import org.apache.ignite.internal.processors.GridProcessor;
+import org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing;
+import org.apache.ignite.internal.util.typedef.G;
+import org.apache.ignite.internal.util.typedef.X;
+import org.apache.ignite.internal.util.typedef.internal.U;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.junit.Test;
+
+/**
+ * Tests distributed SQL queries default timeouts.
+ */
+public class IgniteCacheDistributedQueryDefaultTimeoutSelfTest extends GridCommonAbstractTest
{
+    /** Grids count. */
+    private static final int GRIDS_CNT = 3;
+
+    /** Cache size. */
+    public static final int CACHE_SIZE = 10_000;
+
+    /** Default query timeout */
+    private static final long DEFAULT_QUERY_TIMEOUT = 1000;
+
+    /** Value size. */
+    public static final int VAL_SIZE = 16;
+
+    /** */
+    private static final String QRY_1 = "select a._val, b._val from String a, String b";
+
+    /** */
+    private static final String QRY_2 = "select a._key, count(*) from String a group by a._key";
+
+    /** */
+    private static final String QRY_3 = "select a._val from String a";
+
+    /** {@inheritDoc} */
+    @Override protected void beforeTestsStarted() throws Exception {
+        super.beforeTestsStarted();
+
+        startGridsMultiThreaded(GRIDS_CNT);
+    }
+
+    /** {@inheritDoc} */
+    @Override protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws
Exception {
+        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
+
+        CacheConfiguration<Integer, String> ccfg = new CacheConfiguration<>(DEFAULT_CACHE_NAME);
+        ccfg.setIndexedTypes(Integer.class, String.class);
+
+        cfg.setCacheConfiguration(ccfg);
+
+        if ("client".equals(igniteInstanceName))
+            cfg.setClientMode(true);
+
+        cfg.setDefaultQueryTimeout(DEFAULT_QUERY_TIMEOUT);
+
+        return cfg;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected void afterTest() throws Exception {
+        super.afterTest();
+
+        G.ignite().cache(DEFAULT_CACHE_NAME).removeAll();
+    }
+
+    /** */
+    @Test
+    public void testRemoteQueryExecutionTimeout() throws Exception {
+        testQueryCancel(CACHE_SIZE, VAL_SIZE, QRY_1, 500, TimeUnit.MILLISECONDS, true, true);
+    }
+
+    /** */
+    @Test
+    public void testRemoteQueryWithMergeTableTimeout() throws Exception {
+        testQueryCancel(CACHE_SIZE, VAL_SIZE, QRY_2, 500, TimeUnit.MILLISECONDS, true, false);
+    }
+
+    /** */
+    @Test
+    public void testRemoteQueryExecutionCancel0() throws Exception {
+        testQueryCancel(CACHE_SIZE, VAL_SIZE, QRY_1, 1, TimeUnit.MILLISECONDS, false, true);
+    }
+
+    /** */
+    private void testQueryCancel(int keyCnt, int valSize, String sql, int timeoutUnits, TimeUnit
timeUnit,
+        boolean timeout, boolean checkCanceled) throws Exception {
+        try (Ignite client = startGrid("client")) {
+            IgniteCache<Object, Object> cache = client.cache(DEFAULT_CACHE_NAME);
+
+            assertEquals(0, cache.localSize());
+
+            int p = 1;
+            for (int i = 1; i <= keyCnt; i++) {
+                char[] tmp = new char[valSize];
+                Arrays.fill(tmp, ' ');
+                cache.put(i, new String(tmp));
+
+                if (i/(float)keyCnt >= p/10f) {
+                    log().info("Loaded " + i + " of " + keyCnt);
+
+                    p++;
+                }
+            }
+
+            assertEquals(0, cache.localSize());
+
+            SqlFieldsQuery qry = new SqlFieldsQuery(sql);
+
+            final QueryCursor<List<?>> cursor;
+            if (timeout) {
+                qry.setTimeout(timeoutUnits, timeUnit);
+
+                cursor = cache.query(qry);
+            }
+            else {
+                cursor = cache.query(qry);
+
+                client.scheduler().runLocal(new Runnable() {
+                    @Override public void run() {
+                        cursor.close();
+                    }
+                }, timeoutUnits, timeUnit);
+            }
+
+            try (QueryCursor<List<?>> ignored = cursor) {
+                cursor.getAll();
+
+                if (checkCanceled)
+                    fail("Query not canceled");
+            }
+            catch (CacheException ex) {
+                error("Got expected exception", ex);
+
+                assertNotNull("Must throw correct exception", X.cause(ex, QueryCancelledException.class));
 
 Review comment:
   If you note the tests in IgniteCacheDistributedQueryStopOnCancelOrTimeoutSelfTest also,
it is similar to Default Query timeout tests. I suppose the reason being we are throwing QueryCancelledException
for either manual cancel or query being cancelled due to timeout. I agree throwing a separate
exception for timeout vs manual cancel will be better approach to handle different scenarios
and help with logging and exception handling.
   
   The only way to differentiate the explicit query timeout vs default query timeout is like
in `IgniteCacheLocalQueryDefaultTimeoutSelfTest.testQueryDefaultTimeout()` test the method
testQuery() method is called with param timeout as false and it will result in query cancellation
due to default query timeout.
   

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