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Posted to issues@solr.apache.org by GitBox <gi...@apache.org> on 2021/10/07 19:33:39 UTC

[GitHub] [solr] anshumg commented on a change in pull request #286: SOLR-14892 - shards.info with shards.tolerant can yield an empty key

anshumg commented on a change in pull request #286:
URL: https://github.com/apache/solr/pull/286#discussion_r724472266



##########
File path: solr/core/src/test/org/apache/solr/cloud/TestNoDuplicateKeysInShardsInfoWhenShardsDown.java
##########
@@ -0,0 +1,89 @@
+/*
+ * 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.solr.cloud;
+
+import java.lang.invoke.MethodHandles;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.common.params.ShardParams;
+import org.apache.solr.common.util.SimpleOrderedMap;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.core.IsIterableContaining.hasItems;
+
+/**
+ * Test which asserts that shards.info=true works even if several shards are down
+ * It must return one unique key per shard.
+ * See SOLR-14892
+ */
+public class TestNoDuplicateKeysInShardsInfoWhenShardsDown extends SolrCloudTestCase {
+
+  private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+  @BeforeClass
+  public static void setupCluster() throws Exception {
+    configureCluster(3)
+        .addConfig("cloud-minimal", configset("cloud-minimal"))
+        .configure();
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void searchingWithShardsInfoMustNotReturneEmptyOrDuplicateKeys() throws Exception {
+
+    CollectionAdminRequest.createCollection("collection", "cloud-minimal", 3, 1)
+        .process(cluster.getSolrClient());
+
+    UpdateRequest update = new UpdateRequest();
+    for (int i = 0; i < 100; i++) {
+      update.add("id", Integer.toString(i));
+    }
+    update.commit(cluster.getSolrClient(), "collection");
+
+    // Stops 2 shards
+    for (int i = 0; i < 2; i++) {
+      cluster.waitForJettyToStop(cluster.stopJettySolrRunner(i));
+    }
+
+    QueryResponse response = cluster.getSolrClient().query("collection", new SolrQuery("*:*")
+        .setRows(1)
+        .setParam(ShardParams.SHARDS_TOLERANT, true)
+        .setParam(ShardParams.SHARDS_INFO, true));
+    assertThat(response.getStatus(), is(0));
+    assertTrue(response.getResults().getNumFound() > 0);
+
+    SimpleOrderedMap<Object> shardsInfo = (SimpleOrderedMap<Object>) response.getResponse().get("shards.info");
+    // We verify that there are no duplicate keys in case of 2 shards in error
+    assertEquals(3, shardsInfo.size());
+
+    Collection<String> keys = new ArrayList<>();
+    keys.add(shardsInfo.getName(0));
+    keys.add(shardsInfo.getName(1));
+    keys.add(shardsInfo.getName(2));
+
+    assertThat((Iterable<String>) keys, hasItems("unknown_shard_1", "unknown_shard_2"));

Review comment:
       Let's replace the `assertThat` usage here as well

##########
File path: solr/core/src/java/org/apache/solr/handler/component/SearchHandler.java
##########
@@ -527,9 +525,7 @@ public void handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp) throw
           }          
         }
         nl.add("error", cause.toString() );
-        StringWriter trace = new StringWriter();
-        cause.printStackTrace(new PrintWriter(trace));

Review comment:
       We might want to continue logging this exception

##########
File path: solr/core/src/test/org/apache/solr/cloud/TestNoDuplicateKeysInShardsInfoWhenShardsDown.java
##########
@@ -0,0 +1,89 @@
+/*
+ * 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.solr.cloud;
+
+import java.lang.invoke.MethodHandles;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.common.params.ShardParams;
+import org.apache.solr.common.util.SimpleOrderedMap;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.core.IsIterableContaining.hasItems;
+
+/**
+ * Test which asserts that shards.info=true works even if several shards are down
+ * It must return one unique key per shard.
+ * See SOLR-14892
+ */
+public class TestNoDuplicateKeysInShardsInfoWhenShardsDown extends SolrCloudTestCase {
+
+  private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+  @BeforeClass
+  public static void setupCluster() throws Exception {
+    configureCluster(3)
+        .addConfig("cloud-minimal", configset("cloud-minimal"))
+        .configure();
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void searchingWithShardsInfoMustNotReturneEmptyOrDuplicateKeys() throws Exception {
+
+    CollectionAdminRequest.createCollection("collection", "cloud-minimal", 3, 1)
+        .process(cluster.getSolrClient());
+
+    UpdateRequest update = new UpdateRequest();
+    for (int i = 0; i < 100; i++) {
+      update.add("id", Integer.toString(i));
+    }
+    update.commit(cluster.getSolrClient(), "collection");
+
+    // Stops 2 shards
+    for (int i = 0; i < 2; i++) {
+      cluster.waitForJettyToStop(cluster.stopJettySolrRunner(i));
+    }
+
+    QueryResponse response = cluster.getSolrClient().query("collection", new SolrQuery("*:*")
+        .setRows(1)
+        .setParam(ShardParams.SHARDS_TOLERANT, true)
+        .setParam(ShardParams.SHARDS_INFO, true));
+    assertThat(response.getStatus(), is(0));

Review comment:
       `assertThat` is deprecated and it'd be good to replace this with `assertEquals` here

##########
File path: solr/core/src/test/org/apache/solr/cloud/TestNoDuplicateKeysInShardsInfoWhenShardsDown.java
##########
@@ -0,0 +1,89 @@
+/*
+ * 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.solr.cloud;
+
+import java.lang.invoke.MethodHandles;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.common.params.ShardParams;
+import org.apache.solr.common.util.SimpleOrderedMap;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.core.IsIterableContaining.hasItems;
+
+/**
+ * Test which asserts that shards.info=true works even if several shards are down
+ * It must return one unique key per shard.
+ * See SOLR-14892
+ */
+public class TestNoDuplicateKeysInShardsInfoWhenShardsDown extends SolrCloudTestCase {

Review comment:
       Can we change the name to something more generic and have only the method highlight the specifics? Something like `TestShardsInfoResponse` ?

##########
File path: solr/core/src/test/org/apache/solr/cloud/TestNoDuplicateKeysInShardsInfoWhenShardsDown.java
##########
@@ -0,0 +1,89 @@
+/*
+ * 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.solr.cloud;
+
+import java.lang.invoke.MethodHandles;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.common.params.ShardParams;
+import org.apache.solr.common.util.SimpleOrderedMap;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.core.IsIterableContaining.hasItems;
+
+/**
+ * Test which asserts that shards.info=true works even if several shards are down
+ * It must return one unique key per shard.
+ * See SOLR-14892
+ */
+public class TestNoDuplicateKeysInShardsInfoWhenShardsDown extends SolrCloudTestCase {
+
+  private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+  @BeforeClass
+  public static void setupCluster() throws Exception {
+    configureCluster(3)
+        .addConfig("cloud-minimal", configset("cloud-minimal"))
+        .configure();
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void searchingWithShardsInfoMustNotReturneEmptyOrDuplicateKeys() throws Exception {

Review comment:
       Typo - extra `e` after `Return` 

##########
File path: solr/core/src/test/org/apache/solr/cloud/TestNoDuplicateKeysInShardsInfoWhenShardsDown.java
##########
@@ -0,0 +1,89 @@
+/*
+ * 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.solr.cloud;
+
+import java.lang.invoke.MethodHandles;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.common.params.ShardParams;
+import org.apache.solr.common.util.SimpleOrderedMap;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.core.IsIterableContaining.hasItems;
+
+/**
+ * Test which asserts that shards.info=true works even if several shards are down
+ * It must return one unique key per shard.
+ * See SOLR-14892
+ */
+public class TestNoDuplicateKeysInShardsInfoWhenShardsDown extends SolrCloudTestCase {
+
+  private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

Review comment:
       This is never used.




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