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Posted to issues@bookkeeper.apache.org by GitBox <gi...@apache.org> on 2021/12/07 05:11:46 UTC
[GitHub] [bookkeeper] equanz opened a new pull request #2931: Add ensemble relocation command which adheres to placement policy
equanz opened a new pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931
### Motivation
Currently, we can't recover the ensemble which isn't adhering to placement policy directly.
I want to add a relocation feature to adhere placement policy.
### Changes
Add relocation feature to shell command.
So, we can use it synchronously instead of executing asynchronously like the autorecovery process.
In this specification, optimize the new ensemble arrangement to minify the number of bookies replaced.
Therefore, we should implement the new method that returns the new ensemble by policies.
First, I introduce this feature to RackawareEnsemblePlacementPolicy in this PR.
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1082464671
rerun failure checks
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1081672178
rerun failure checks
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[GitHub] [bookkeeper] eolivelli commented on a change in pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
eolivelli commented on a change in pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#discussion_r823566877
##########
File path: bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
##########
@@ -1071,4 +1074,175 @@ public boolean areAckedBookiesAdheringToPlacementPolicy(Set<BookieId> ackedBooki
}
return rackCounter.size() >= minWriteQuorumNumRacksPerWriteQuorum;
}
+
+ @Override
+ public PlacementResult<List<BookieId>> replaceToAdherePlacementPolicy(
+ int ensembleSize,
+ int writeQuorumSize,
+ int ackQuorumSize,
+ Set<BookieId> excludeBookies,
+ List<BookieId> currentEnsemble) {
+ rwLock.readLock().lock();
+ try {
+ final List<BookieNode> provisionalEnsembleNodes = currentEnsemble.stream()
+ .map(this::convertBookieToNode).collect(Collectors.toList());
+ final Set<Node> excludeNodes = convertBookiesToNodes(
+ addDefaultRackBookiesIfMinNumRacksIsEnforced(excludeBookies));
+ int minNumRacksPerWriteQuorumForThisEnsemble = Math.min(writeQuorumSize, minNumRacksPerWriteQuorum);
+ final RRTopologyAwareCoverageEnsemble ensemble =
+ new RRTopologyAwareCoverageEnsemble(
+ ensembleSize,
+ writeQuorumSize,
+ ackQuorumSize,
+ RACKNAME_DISTANCE_FROM_LEAVES,
+ null,
+ null,
+ minNumRacksPerWriteQuorumForThisEnsemble);
+
+ int numRacks = topology.getNumOfRacks();
+ // only one rack or less than minNumRacksPerWriteQuorumForThisEnsemble, stop calculation to skip relocation
+ if (numRacks < 2 || numRacks < minNumRacksPerWriteQuorumForThisEnsemble) {
+ LOG.warn("Skip ensemble relocation because the cluster has only {} rack.", numRacks);
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+
+ BookieNode prevNode = null;
+ final BookieNode firstNode = provisionalEnsembleNodes.get(0);
+ // use same bookie at first to reduce ledger replication
+ if (!excludeNodes.contains(firstNode) && ensemble.apply(firstNode, ensemble)
+ && ensemble.addNode(firstNode)) {
+ excludeNodes.add(firstNode);
+ prevNode = firstNode;
+ }
+
+ for (int i = prevNode == null ? 0 : 1; i < ensembleSize; i++) {
+ final String curRack;
+ if (null == prevNode) {
+ if ((null == localNode) || defaultRack.equals(localNode.getNetworkLocation())) {
+ curRack = NodeBase.ROOT;
+ } else {
+ curRack = localNode.getNetworkLocation();
+ }
+ } else {
+ curRack = "~" + prevNode.getNetworkLocation();
+ }
+
+ try {
+ prevNode = replaceToAdherePlacementPolicyInternal(
+ curRack, excludeNodes, ensemble, ensemble,
+ provisionalEnsembleNodes, i, ensembleSize, minNumRacksPerWriteQuorumForThisEnsemble);
+ // replace to newer node
+ provisionalEnsembleNodes.set(i, prevNode);
+ } catch (BKNotEnoughBookiesException e) {
+ LOG.warn("Skip ensemble relocation because the cluster has not enough bookies.");
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+ }
+ List<BookieId> bookieList = ensemble.toList();
+ if (ensembleSize != bookieList.size()) {
+ LOG.warn("Not enough {} bookies are available to form an ensemble : {}.",
+ ensembleSize, bookieList);
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+ return PlacementResult.of(bookieList,
+ isEnsembleAdheringToPlacementPolicy(
+ bookieList, writeQuorumSize, ackQuorumSize));
+ } finally {
+ rwLock.readLock().unlock();
+ }
+ }
+
+ private BookieNode replaceToAdherePlacementPolicyInternal(
+ String netPath, Set<Node> excludeBookies, Predicate<BookieNode> predicate,
+ Ensemble<BookieNode> ensemble, List<BookieNode> provisionalEnsembleNodes, int ensembleIndex,
+ int ensembleSize, int minNumRacksPerWriteQuorumForThisEnsemble) throws BKNotEnoughBookiesException {
+ final BookieNode currentNode = provisionalEnsembleNodes.get(ensembleIndex);
+ // if the current bookie could be applied to the ensemble, apply it to minify the number of bookies replaced
+ if (!excludeBookies.contains(currentNode) && predicate.apply(currentNode, ensemble)) {
+ if (ensemble.addNode(currentNode)) {
+ // add the candidate to exclude set
+ excludeBookies.add(currentNode);
Review comment:
we should not modify the `excludeBookies` Set passed as argument, please create a copy in the beginning of the method
otherwise this method will have unwanted side effects
##########
File path: bookkeeper-server/src/test/java/org/apache/bookkeeper/client/CorrectEnsemblePlacementCmdTest.java
##########
@@ -0,0 +1,235 @@
+/*
+ * 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.bookkeeper.client;
+
+import static junit.framework.TestCase.assertEquals;
+import static org.apache.bookkeeper.client.RackawareEnsemblePlacementPolicyImpl.REPP_DNS_RESOLVER_CLASS;
+import static org.mockito.ArgumentMatchers.eq;
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import lombok.Cleanup;
+import org.apache.bookkeeper.bookie.BookieShell;
+import org.apache.bookkeeper.bookie.storage.ldb.DbLedgerStorage;
+import org.apache.bookkeeper.client.api.LedgerMetadata;
+import org.apache.bookkeeper.net.BookieId;
+import org.apache.bookkeeper.net.BookieSocketAddress;
+import org.apache.bookkeeper.net.NetworkTopology;
+import org.apache.bookkeeper.proto.BookieAddressResolver;
+import org.apache.bookkeeper.test.BookKeeperClusterTestCase;
+import org.apache.bookkeeper.tools.cli.commands.bookies.CorrectEnsemblePlacementCommand;
+import org.apache.bookkeeper.util.EntryFormatter;
+import org.apache.bookkeeper.util.LedgerIdFormatter;
+import org.apache.bookkeeper.util.StaticDNSResolver;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Tests of correct-ensemble-placement command.
+ */
+public class CorrectEnsemblePlacementCmdTest extends BookKeeperClusterTestCase {
+
+ private static final Logger LOG = LoggerFactory.getLogger(CorrectEnsemblePlacementCmdTest.class);
+ private BookKeeper.DigestType digestType = BookKeeper.DigestType.CRC32;
+ private static final String PASSWORD = "testPasswd";
+
+ public CorrectEnsemblePlacementCmdTest() throws Exception {
+ super(0);
+ baseConf.setLedgerStorageClass(DbLedgerStorage.class.getName());
+ baseConf.setGcWaitTime(60000);
+ baseConf.setFlushInterval(1);
+ }
+
+ /**
+ * list of entry logger files that contains given ledgerId.
+ */
+ @Test
+ public void testArgument() throws Exception {
+ startNewBookie();
+
+ @Cleanup
+ final BookKeeper bk = new BookKeeper(baseClientConf, zkc);
+ @Cleanup
+ final LedgerHandle lh = createLedgerWithEntries(bk, 10, 1, 1);
+
+ final String[] argv1 = { "correct-ensemble-placement", "--ledgerids", String.valueOf(lh.getId()),
+ "--skipOpenLedgers", "--force"};
+ final String[] argv2 = { "correct-ensemble-placement", "--ledgerids", String.valueOf(lh.getId()),
+ "--skipOpenLedgers", "--force", "--dryrun"};
+ final BookieShell bkShell =
+ new BookieShell(LedgerIdFormatter.LONG_LEDGERID_FORMATTER, EntryFormatter.STRING_FORMATTER);
+ bkShell.setConf(baseClientConf);
+
+ assertEquals("Failed to return exit code!", 0, bkShell.run(argv1));
+ assertEquals("Failed to return exit code!", 0, bkShell.run(argv2));
+ }
+
+ @Test
+ public void testCorrectEnsemblePlacementByRackaware() throws Exception {
+ final int ensembleSize = 7;
+ final int quorumSize = 2;
+
+ final BookieSocketAddress addr1 = new BookieSocketAddress("127.0.0.1", 3181);
+ final BookieSocketAddress addr2 = new BookieSocketAddress("127.0.0.2", 3181);
+ final BookieSocketAddress addr3 = new BookieSocketAddress("127.0.0.3", 3181);
+ final BookieSocketAddress addr4 = new BookieSocketAddress("127.0.0.4", 3181);
+ final BookieSocketAddress addr5 = new BookieSocketAddress("127.0.0.5", 3181);
+ final BookieSocketAddress addr6 = new BookieSocketAddress("127.0.0.6", 3181);
+ final BookieSocketAddress addr7 = new BookieSocketAddress("127.0.0.7", 3181);
+ final BookieSocketAddress addr8 = new BookieSocketAddress("127.0.0.8", 3181);
+ final BookieSocketAddress addr9 = new BookieSocketAddress("127.0.0.9", 3181);
+
+ final Set<BookieId> writableBookies = new HashSet<>();
+ writableBookies.add(addr1.toBookieId());
+ writableBookies.add(addr2.toBookieId());
+ writableBookies.add(addr3.toBookieId());
+ writableBookies.add(addr4.toBookieId());
+ writableBookies.add(addr5.toBookieId());
+ writableBookies.add(addr6.toBookieId());
+ writableBookies.add(addr7.toBookieId());
+ writableBookies.add(addr8.toBookieId());
+ writableBookies.add(addr9.toBookieId());
+
+ // add bookie node to resolver
+ StaticDNSResolver.reset();
Review comment:
we should do this also in a "After" method, in order to ensure that we do not pollute the test environment
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1074703115
rerun failure checks
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1076124124
I've created the issue about the failing `OWASP Dependency Check`.
https://github.com/apache/bookkeeper/issues/3134
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1083004298
@eolivelli Addressed your first comments. PTAL.
(Also rebase to current master to follow https://github.com/apache/bookkeeper/pull/3140 and https://github.com/apache/bookkeeper/pull/3149 .)
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1080437172
rerun failure checks
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[GitHub] [bookkeeper] equanz commented on a change in pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on a change in pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#discussion_r828814467
##########
File path: bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
##########
@@ -1071,4 +1074,175 @@ public boolean areAckedBookiesAdheringToPlacementPolicy(Set<BookieId> ackedBooki
}
return rackCounter.size() >= minWriteQuorumNumRacksPerWriteQuorum;
}
+
+ @Override
+ public PlacementResult<List<BookieId>> replaceToAdherePlacementPolicy(
+ int ensembleSize,
+ int writeQuorumSize,
+ int ackQuorumSize,
+ Set<BookieId> excludeBookies,
+ List<BookieId> currentEnsemble) {
+ rwLock.readLock().lock();
+ try {
+ final List<BookieNode> provisionalEnsembleNodes = currentEnsemble.stream()
+ .map(this::convertBookieToNode).collect(Collectors.toList());
+ final Set<Node> excludeNodes = convertBookiesToNodes(
+ addDefaultRackBookiesIfMinNumRacksIsEnforced(excludeBookies));
+ int minNumRacksPerWriteQuorumForThisEnsemble = Math.min(writeQuorumSize, minNumRacksPerWriteQuorum);
+ final RRTopologyAwareCoverageEnsemble ensemble =
+ new RRTopologyAwareCoverageEnsemble(
+ ensembleSize,
+ writeQuorumSize,
+ ackQuorumSize,
+ RACKNAME_DISTANCE_FROM_LEAVES,
+ null,
+ null,
+ minNumRacksPerWriteQuorumForThisEnsemble);
+
+ int numRacks = topology.getNumOfRacks();
+ // only one rack or less than minNumRacksPerWriteQuorumForThisEnsemble, stop calculation to skip relocation
+ if (numRacks < 2 || numRacks < minNumRacksPerWriteQuorumForThisEnsemble) {
+ LOG.warn("Skip ensemble relocation because the cluster has only {} rack.", numRacks);
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+
+ BookieNode prevNode = null;
+ final BookieNode firstNode = provisionalEnsembleNodes.get(0);
+ // use same bookie at first to reduce ledger replication
+ if (!excludeNodes.contains(firstNode) && ensemble.apply(firstNode, ensemble)
+ && ensemble.addNode(firstNode)) {
+ excludeNodes.add(firstNode);
+ prevNode = firstNode;
+ }
+
+ for (int i = prevNode == null ? 0 : 1; i < ensembleSize; i++) {
+ final String curRack;
+ if (null == prevNode) {
+ if ((null == localNode) || defaultRack.equals(localNode.getNetworkLocation())) {
+ curRack = NodeBase.ROOT;
+ } else {
+ curRack = localNode.getNetworkLocation();
+ }
+ } else {
+ curRack = "~" + prevNode.getNetworkLocation();
+ }
+
+ try {
+ prevNode = replaceToAdherePlacementPolicyInternal(
+ curRack, excludeNodes, ensemble, ensemble,
+ provisionalEnsembleNodes, i, ensembleSize, minNumRacksPerWriteQuorumForThisEnsemble);
+ // replace to newer node
+ provisionalEnsembleNodes.set(i, prevNode);
+ } catch (BKNotEnoughBookiesException e) {
+ LOG.warn("Skip ensemble relocation because the cluster has not enough bookies.");
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+ }
+ List<BookieId> bookieList = ensemble.toList();
+ if (ensembleSize != bookieList.size()) {
+ LOG.warn("Not enough {} bookies are available to form an ensemble : {}.",
+ ensembleSize, bookieList);
+ return PlacementResult.of(Collections.emptyList(), PlacementPolicyAdherence.FAIL);
+ }
+ return PlacementResult.of(bookieList,
+ isEnsembleAdheringToPlacementPolicy(
+ bookieList, writeQuorumSize, ackQuorumSize));
+ } finally {
+ rwLock.readLock().unlock();
+ }
+ }
+
+ private BookieNode replaceToAdherePlacementPolicyInternal(
+ String netPath, Set<Node> excludeBookies, Predicate<BookieNode> predicate,
+ Ensemble<BookieNode> ensemble, List<BookieNode> provisionalEnsembleNodes, int ensembleIndex,
+ int ensembleSize, int minNumRacksPerWriteQuorumForThisEnsemble) throws BKNotEnoughBookiesException {
+ final BookieNode currentNode = provisionalEnsembleNodes.get(ensembleIndex);
+ // if the current bookie could be applied to the ensemble, apply it to minify the number of bookies replaced
+ if (!excludeBookies.contains(currentNode) && predicate.apply(currentNode, ensemble)) {
+ if (ensemble.addNode(currentNode)) {
+ // add the candidate to exclude set
+ excludeBookies.add(currentNode);
Review comment:
modify the `excludeBookies` to notify exclude bookie to called method like below.
https://github.com/apache/bookkeeper/blob/release-4.14.4/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java#L671-L675
However, as you said, it might have unwanted side effects. Therefore, I'll modify to put to excludeBookies at called method.
```
diff --git a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
index d9167c321..fa3e59cd6 100644
--- a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
+++ b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java
@@ -1131,6 +1131,13 @@ public class RackawareEnsemblePlacementPolicyImpl extends TopologyAwareEnsembleP
prevNode = replaceToAdherePlacementPolicyInternal(
curRack, excludeNodes, ensemble, ensemble,
provisionalEnsembleNodes, i, ensembleSize, minNumRacksPerWriteQuorumForThisEnsemble);
+ // got a good candidate
+ if (ensemble.addNode(prevNode)) {
+ // add the candidate to exclude set
+ excludeNodes.add(prevNode);
+ } else {
+ throw new BKNotEnoughBookiesException();
+ }
// replace to newer node
provisionalEnsembleNodes.set(i, prevNode);
} catch (BKNotEnoughBookiesException e) {
@@ -1159,10 +1166,6 @@ public class RackawareEnsemblePlacementPolicyImpl extends TopologyAwareEnsembleP
final BookieNode currentNode = provisionalEnsembleNodes.get(ensembleIndex);
// if the current bookie could be applied to the ensemble, apply it to minify the number of bookies replaced
if (!excludeBookies.contains(currentNode) && predicate.apply(currentNode, ensemble)) {
- if (ensemble.addNode(currentNode)) {
- // add the candidate to exclude set
- excludeBookies.add(currentNode);
- }
return currentNode;
}
@@ -1234,11 +1237,6 @@ public class RackawareEnsemblePlacementPolicyImpl extends TopologyAwareEnsembleP
continue;
}
BookieNode bn = (BookieNode) n;
- // got a good candidate
- if (ensemble.addNode(bn)) {
- // add the candidate to exclude set
- excludeBookies.add(bn);
- }
return bn;
}
}
```
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[GitHub] [bookkeeper] equanz commented on pull request #2931: Add ensemble relocation command which adheres to placement policy
Posted by GitBox <gi...@apache.org>.
equanz commented on pull request #2931:
URL: https://github.com/apache/bookkeeper/pull/2931#issuecomment-1080253647
rerun failure checks
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