Alexei Scherbakov created IGNITE-9188:
-
Summary: Unexpected eviction leading to data lost in a scenario
with stopping/restarting nodes during rebalancing
Key: IGNITE-9188
URL: https://issues.apache.org/jira/browse/IGNITE-9188
Project: Ignite
Issue Type: Bug
Reporter: Alexei Scherbakov
Assignee: Alexei Scherbakov
Fix For: 2.7
Scenario:
1. Split grid nodes in two groups with distinct partition mapping. One group
holds even partitions, other - odd. Rebalancing of even partitions is only
triggered when number of nodes in grid exceeds n/2 threshold.
2. Start n/2 nodes, activate, put data into even partitions.
3. Start other n/2 nodes, change BLT, delay rebalancing of even partitions.
4. Stop newly started nodes before rebalancing is finished.
Expected behavior: parttiions in "even" group will keep owning state.
Actual behavior: even partitions are evicted leading to data loss.
Unit test reproducer:
{noformat}
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package org.apache.ignite.internal.processors.cache.distributed;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.ignite.Ignite;
import org.apache.ignite.cache.CacheAtomicityMode;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.cache.affinity.AffinityFunctionContext;
import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.DataRegionConfiguration;
import org.apache.ignite.configuration.DataStorageConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.configuration.WALMode;
import org.apache.ignite.internal.TestRecordingCommunicationSpi;
import org.apache.ignite.internal.processors.cache.GridCacheUtils;
import
org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtLocalPartition;
import
org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionDemandMessage;
import org.apache.ignite.internal.util.typedef.G;
import org.apache.ignite.internal.util.typedef.internal.CU;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.lang.IgniteBiPredicate;
import org.apache.ignite.plugin.extensions.communication.Message;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.jetbrains.annotations.Nullable;
import static
org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtPartitionState.OWNING;
/**
*
*/
public class CacheLostPartitionsRestoreStateTest extends GridCommonAbstractTest
{
/** */
public static final long MB = 1024 * 1024L;
/** */
public static final String GRP_ATTR = "grp";
/** */
public static final int GRIDS_CNT = 6;
/** */
public static final String CACHE_1 = "filled";
/** */
public static final String CACHE_2 = "empty";
/** */
public static final String EVEN_GRP = "event";
/** */
public static final String ODD_GRP = "odd";
/** {@inheritDoc} */
@Override protected IgniteConfiguration getConfiguration(String
igniteInstanceName) throws Exception {
IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
cfg.setCommunicationSpi(new TestRecordingCommunicationSpi());
CacheConfiguration ccfg = new CacheConfiguration("default");
ccfg.setAffinity(new RendezvousAffinityFunction(false,
CacheConfiguration.MAX_PARTITIONS_COUNT));
cfg.setCacheConfiguration(ccfg);
cfg.setPeerClassLoadingEnabled(true);
Map attrs = new HashMap<>();
attrs.put(GRP_ATTR,
grp(getTestIgniteInstanceIndex(igniteInstanceName)));
cfg.setUserAttributes(attrs);
DataStorageConfiguration memCfg = new DataStorageConfiguration()
.setDefaultDataRegionConfiguration(
new
DataRegionConfiguration().setPersistenceEnabled(true).setInitialSize(50
