ibessonov commented on code in PR #6211:
URL: https://github.com/apache/ignite-3/pull/6211#discussion_r2191812923
##########
modules/page-memory/src/main/java/org/apache/ignite/internal/pagememory/persistence/store/FilePageStoreManager.java:
##########
@@ -500,4 +505,32 @@ public void destroyGroupIfExists(int groupId) throws
IOException {
private Path groupDir(int groupId) {
return dbDir.resolve(GROUP_DIR_PREFIX + groupId);
}
+
+ /**
+ * Scans the working directory to find IDs of all groups for which
directories still remain.
+ *
+ * @return IDs of groups.
+ */
+ public Set<Integer> allGroupIdsOnFs() {
+ try (Stream<Path> tableDirs = Files.find(dbDir, 1, isTableDir())) {
+ return
tableDirs.map(FilePageStoreManager::extractTableId).collect(toUnmodifiableSet());
+ } catch (IOException e) {
+ throw new IgniteInternalException(Common.INTERNAL_ERR, "Cannot
scan for groupIDs", e);
+ }
+ }
+
+ private BiPredicate<Path, BasicFileAttributes> isTableDir() {
+ return (path, attrs) -> {
+ return attrs.isDirectory() && !dbDir.startsWith(path) &&
path.getFileName().toString().startsWith(GROUP_DIR_PREFIX);
Review Comment:
What does `!dbDir.startsWith(path)` do here? I don't think I understand it
##########
modules/storage-api/src/testFixtures/java/org/apache/ignite/internal/storage/impl/TestStorageEngineTest.java:
##########
@@ -0,0 +1,34 @@
+/*
+ * 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.storage.impl;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.empty;
+import static org.hamcrest.Matchers.is;
+
+import org.apache.ignite.internal.testframework.BaseIgniteAbstractTest;
+import org.junit.jupiter.api.Test;
+
+class TestStorageEngineTest extends BaseIgniteAbstractTest {
Review Comment:
What if we extend it from
`org.apache.ignite.internal.storage.engine.AbstractStorageEngineTest`? Maybe it
won't work, I don't know. Have you tried?
Also, maybe this test should be in base class, for all engines at once
##########
modules/storage-api/src/main/java/org/apache/ignite/internal/storage/engine/StorageEngine.java:
##########
@@ -78,4 +80,12 @@ static long defaultDataRegionSize() {
//noinspection NumericCastThatLosesPrecision
return Math.max(256 * MiB, (long) (0.2 * getTotalMemoryAvailable()));
}
+
+ /**
+ * Returns IDs of tables for which there are MV partition storages that
were created, but they were not yet destroyed
+ * (or the destruction did not finish).
+ */
+ default Set<Integer> nonDestroyedTableIds() {
Review Comment:
Does it really make sense to use word "destroy" in this context? I feel like
the name would be simpler if we called it something like `getAllTableIds`,
because that's what it does. Is this correct?
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